/wp-includes/general-template.php

Large files files are truncated, but you can click here to view the full file

<?php

/**

 * General template tags that can go anywhere in a template.

 *

 * @package WordPress

 * @subpackage Template

 */



/**

 * Load header template.

 *

 * Includes the header template for a theme or if a name is specified then a

 * specialised header will be included.

 *

 * For the parameter, if the file is called "header-special.php" then specify

 * "special".

 *

 * @since 1.5.0

 *

 * @uses locate_template()

 *

 * @param string $name The name of the specialised header.

 */

function get_header( $name = null ) {

	/**

	 * Fires before the header template file is loaded.

	 *

	 * The hook allows a specific header template file to be used in place of the

	 * default header template file. If your file is called header-new.php,

	 * you would specify the filename in the hook as get_header( 'new' ).

	 *

	 * @since 2.1.0

	 * @since 2.8.0 $name parameter added.

	 *

	 * @param string $name Name of the specific header file to use.

	 */

	do_action( 'get_header', $name );



	$templates = array();

	$name = (string) $name;

	if ( '' !== $name )

		$templates[] = "header-{$name}.php";



	$templates[] = 'header.php';



	// Backward compat code will be removed in a future release

	if ('' == locate_template($templates, true))

		load_template( ABSPATH . WPINC . '/theme-compat/header.php');

}



/**

 * Load footer template.

 *

 * Includes the footer template for a theme or if a name is specified then a

 * specialised footer will be included.

 *

 * For the parameter, if the file is called "footer-special.php" then specify

 * "special".

 *

 * @since 1.5.0

 *

 * @uses locate_template()

 *

 * @param string $name The name of the specialised footer.

 */

function get_footer( $name = null ) {

	/**

	 * Fires before the footer template file is loaded.

	 *

	 * The hook allows a specific footer template file to be used in place of the

	 * default footer template file. If your file is called footer-new.php,

	 * you would specify the filename in the hook as get_footer( 'new' ).

	 *

	 * @since 2.1.0

	 * @since 2.8.0 $name parameter added.

	 *

	 * @param string $name Name of the specific footer file to use.

	 */

	do_action( 'get_footer', $name );



	$templates = array();

	$name = (string) $name;

	if ( '' !== $name )

		$templates[] = "footer-{$name}.php";



	$templates[] = 'footer.php';



	// Backward compat code will be removed in a future release

	if ('' == locate_template($templates, true))

		load_template( ABSPATH . WPINC . '/theme-compat/footer.php');

}



/**

 * Load sidebar template.

 *

 * Includes the sidebar template for a theme or if a name is specified then a

 * specialised sidebar will be included.

 *

 * For the parameter, if the file is called "sidebar-special.php" then specify

 * "special".

 *

 * @since 1.5.0

 *

 * @uses locate_template()

 *

 * @param string $name The name of the specialised sidebar.

 */

function get_sidebar( $name = null ) {

	/**

	 * Fires before the sidebar template file is loaded.

	 *

	 * The hook allows a specific sidebar template file to be used in place of the

	 * default sidebar template file. If your file is called sidebar-new.php,

	 * you would specify the filename in the hook as get_sidebar( 'new' ).

	 *

	 * @since 2.2.0

	 * @since 2.8.0 $name parameter added.

	 *

	 * @param string $name Name of the specific sidebar file to use.

	 */

	do_action( 'get_sidebar', $name );



	$templates = array();

	$name = (string) $name;

	if ( '' !== $name )

		$templates[] = "sidebar-{$name}.php";



	$templates[] = 'sidebar.php';



	// Backward compat code will be removed in a future release

	if ('' == locate_template($templates, true))

		load_template( ABSPATH . WPINC . '/theme-compat/sidebar.php');

}



/**

 * Load a template part into a template

 *

 * Makes it easy for a theme to reuse sections of code in a easy to overload way

 * for child themes.

 *

 * Includes the named template part for a theme or if a name is specified then a

 * specialised part will be included. If the theme contains no {slug}.php file

 * then no template will be included.

 *

 * The template is included using require, not require_once, so you may include the

 * same template part multiple times.

 *

 * For the $name parameter, if the file is called "{slug}-special.php" then specify

 * "special".

 *

 * @since 3.0.0

 *

 * @uses locate_template()

 *

 * @param string $slug The slug name for the generic template.

 * @param string $name The name of the specialised template.

 */

function get_template_part( $slug, $name = null ) {

	/**

	 * Fires before the specified template part file is loaded.

	 *

	 * The dynamic portion of the hook name, $slug, refers to the slug name

	 * for the generic template part.

	 *

	 * @since 3.0.0

	 *

	 * @param string $slug The slug name for the generic template.

	 * @param string $name The name of the specialized template.

	 */

	do_action( "get_template_part_{$slug}", $slug, $name );



	$templates = array();

	$name = (string) $name;

	if ( '' !== $name )

		$templates[] = "{$slug}-{$name}.php";



	$templates[] = "{$slug}.php";



	locate_template($templates, true, false);

}



/**

 * Display search form.

 *

 * Will first attempt to locate the searchform.php file in either the child or

 * the parent, then load it. If it doesn't exist, then the default search form

 * will be displayed. The default search form is HTML, which will be displayed.

 * There is a filter applied to the search form HTML in order to edit or replace

 * it. The filter is 'get_search_form'.

 *

 * This function is primarily used by themes which want to hardcode the search

 * form into the sidebar and also by the search widget in WordPress.

 *

 * There is also an action that is called whenever the function is run called,

 * 'pre_get_search_form'. This can be useful for outputting JavaScript that the

 * search relies on or various formatting that applies to the beginning of the

 * search. To give a few examples of what it can be used for.

 *

 * @since 2.7.0

 *

 * @param boolean $echo Default to echo and not return the form.

 * @return string|null String when retrieving, null when displaying or if searchform.php exists.

 */

function get_search_form( $echo = true ) {

	/**

	 * Fires before the search form is retrieved, at the start of get_search_form().

	 *

	 * @since 2.7.0 as 'get_search_form' action.

	 * @since 3.6.0

	 *

	 * @link https://core.trac.wordpress.org/ticket/19321

	 */

	do_action( 'pre_get_search_form' );



	$format = current_theme_supports( 'html5', 'search-form' ) ? 'html5' : 'xhtml';



	/**

	 * Filter the HTML format of the search form.

	 *

	 * @since 3.6.0

	 *

	 * @param string $format The type of markup to use in the search form.

	 *                       Accepts 'html5', 'xhtml'.

	 */

	$format = apply_filters( 'search_form_format', $format );



	$search_form_template = locate_template( 'searchform.php' );

	if ( '' != $search_form_template ) {

		ob_start();

		require( $search_form_template );

		$form = ob_get_clean();

	} else {

		if ( 'html5' == $format ) {

			$form = '<form role="search" method="get" class="search-form" action="' . esc_url( home_url( '/' ) ) . '">

				<label>

					<span class="screen-reader-text">' . _x( 'Search for:', 'label' ) . '</span>

					<input type="search" class="search-field" placeholder="' . esc_attr_x( 'Search &hellip;', 'placeholder' ) . '" value="' . get_search_query() . '" name="s" title="' . esc_attr_x( 'Search for:', 'label' ) . '" />

				</label>

				<input type="submit" class="search-submit" value="'. esc_attr_x( 'Search', 'submit button' ) .'" />

			</form>';

		} else {

			$form = '<form role="search" method="get" id="searchform" class="searchform" action="' . esc_url( home_url( '/' ) ) . '">

				<div>

					<label class="screen-reader-text" for="s">' . _x( 'Search for:', 'label' ) . '</label>

					<input type="text" value="' . get_search_query() . '" name="s" id="s" />

					<input type="submit" id="searchsubmit" value="'. esc_attr_x( 'Search', 'submit button' ) .'" />

				</div>

			</form>';

		}

	}



	/**

	 * Filter the HTML output of the search form.

	 *

	 * @since 2.7.0

	 *

	 * @param string $form The search form HTML output.

	 */

	$result = apply_filters( 'get_search_form', $form );



	if ( null === $result )

		$result = $form;



	if ( $echo )

		echo $result;

	else

		return $result;

}



/**

 * Display the Log In/Out link.

 *

 * Displays a link, which allows users to navigate to the Log In page to log in

 * or log out depending on whether they are currently logged in.

 *

 * @since 1.5.0

 *

 * @param string $redirect Optional path to redirect to on login/logout.

 * @param boolean $echo Default to echo and not return the link.

 * @return string|null String when retrieving, null when displaying.

 */

function wp_loginout($redirect = '', $echo = true) {

	if ( ! is_user_logged_in() )

		$link = '<a href="' . esc_url( wp_login_url($redirect) ) . '">' . __('Log in') . '</a>';

	else

		$link = '<a href="' . esc_url( wp_logout_url($redirect) ) . '">' . __('Log out') . '</a>';



	if ( $echo ) {

		/**

		 * Filter the HTML output for the Log In/Log Out link.

		 *

		 * @since 1.5.0

		 *

		 * @param string $link The HTML link content.

		 */

		echo apply_filters( 'loginout', $link );

	} else {

		/** This filter is documented in wp-includes/general-template.php */

		return apply_filters( 'loginout', $link );

	}

}



/**

 * Returns the Log Out URL.

 *

 * Returns the URL that allows the user to log out of the site.

 *

 * @since 2.7.0

 *

 * @uses wp_nonce_url() To protect against CSRF.

 * @uses site_url() To generate the log out URL.

 *

 * @param string $redirect Path to redirect to on logout.

 * @return string A log out URL.

 */

function wp_logout_url($redirect = '') {

	$args = array( 'action' => 'logout' );

	if ( !empty($redirect) ) {

		$args['redirect_to'] = urlencode( $redirect );

	}



	$logout_url = add_query_arg($args, site_url('wp-login.php', 'login'));

	$logout_url = wp_nonce_url( $logout_url, 'log-out' );



	/**

	 * Filter the logout URL.

	 *

	 * @since 2.8.0

	 *

	 * @param string $logout_url The Log Out URL.

	 * @param string $redirect   Path to redirect to on logout.

	 */

	return apply_filters( 'logout_url', $logout_url, $redirect );

}



/**

 * Returns the Log In URL.

 *

 * Returns the URL that allows the user to log in to the site.

 *

 * @since 2.7.0

 *

 * @uses site_url() To generate the log in URL.

 *

 * @param string $redirect Path to redirect to on login.

 * @param bool $force_reauth Whether to force reauthorization, even if a cookie is present. Default is false.

 * @return string A log in URL.

 */

function wp_login_url($redirect = '', $force_reauth = false) {

	$login_url = site_url('wp-login.php', 'login');



	if ( !empty($redirect) )

		$login_url = add_query_arg('redirect_to', urlencode($redirect), $login_url);



	if ( $force_reauth )

		$login_url = add_query_arg('reauth', '1', $login_url);



	/**

	 * Filter the login URL.

	 *

	 * @since 2.8.0

	 *

	 * @param string $login_url The login URL.

	 * @param string $redirect  The path to redirect to on login, if supplied.

	 */

	return apply_filters( 'login_url', $login_url, $redirect );

}



/**

 * Returns the user registration URL.

 *

 * Returns the URL that allows the user to register on the site.

 *

 * @since 3.6.0

 *

 * @uses site_url() To generate the registration URL.

 *

 * @return string User registration URL.

 */

function wp_registration_url() {

	/**

	 * Filter the user registration URL.

	 *

	 * @since 3.6.0

	 *

	 * @param string $register The user registration URL.

	 */

	return apply_filters( 'register_url', site_url( 'wp-login.php?action=register', 'login' ) );

}



/**

 * Provides a simple login form for use anywhere within WordPress. By default, it echoes

 * the HTML immediately. Pass array('echo'=>false) to return the string instead.

 *

 * @since 3.0.0

 *

 * @param array $args Configuration options to modify the form output.

 * @return string|null String when retrieving, null when displaying.

 */

function wp_login_form( $args = array() ) {

	$defaults = array(

		'echo' => true,

		'redirect' => ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'], // Default redirect is back to the current page

		'form_id' => 'loginform',

		'label_username' => __( 'Username' ),

		'label_password' => __( 'Password' ),

		'label_remember' => __( 'Remember Me' ),

		'label_log_in' => __( 'Log In' ),

		'id_username' => 'user_login',

		'id_password' => 'user_pass',

		'id_remember' => 'rememberme',

		'id_submit' => 'wp-submit',

		'remember' => true,

		'value_username' => '',

		'value_remember' => false, // Set this to true to default the "Remember me" checkbox to checked

	);



	/**

	 * Filter the default login form output arguments.

	 *

	 * @since 3.0.0

	 *

	 * @see wp_login_form()

	 *

	 * @param array $defaults An array of default login form arguments.

	 */

	$args = wp_parse_args( $args, apply_filters( 'login_form_defaults', $defaults ) );



	/**

	 * Filter content to display at the top of the login form.

	 *

	 * The filter evaluates just following the opening form tag element.

	 *

	 * @since 3.0.0

	 *

	 * @param string $content Content to display. Default empty.

	 * @param array  $args    Array of login form arguments.

	 */

	$login_form_top = apply_filters( 'login_form_top', '', $args );



	/**

	 * Filter content to display in the middle of the login form.

	 *

	 * The filter evaluates just following the location where the 'login-password'

	 * field is displayed.

	 *

	 * @since 3.0.0

	 *

	 * @param string $content Content to display. Default empty.

	 * @param array  $args    Array of login form arguments.

	 */

	$login_form_middle = apply_filters( 'login_form_middle', '', $args );



	/**

	 * Filter content to display at the bottom of the login form.

	 *

	 * The filter evaluates just preceding the closing form tag element.

	 *

	 * @since 3.0.0

	 *

	 * @param string $content Content to display. Default empty.

	 * @param array  $args    Array of login form arguments.

	 */

	$login_form_bottom = apply_filters( 'login_form_bottom', '', $args );



	$form = '

		<form name="' . $args['form_id'] . '" id="' . $args['form_id'] . '" action="' . esc_url( site_url( 'wp-login.php', 'login_post' ) ) . '" method="post">

			' . $login_form_top . '

			<p class="login-username">

				<label for="' . esc_attr( $args['id_username'] ) . '">' . esc_html( $args['label_username'] ) . '</label>

				<input type="text" name="log" id="' . esc_attr( $args['id_username'] ) . '" class="input" value="' . esc_attr( $args['value_username'] ) . '" size="20" />

			</p>

			<p class="login-password">

				<label for="' . esc_attr( $args['id_password'] ) . '">' . esc_html( $args['label_password'] ) . '</label>

				<input type="password" name="pwd" id="' . esc_attr( $args['id_password'] ) . '" class="input" value="" size="20" />

			</p>

			' . $login_form_middle . '

			' . ( $args['remember'] ? '<p class="login-remember"><label><input name="rememberme" type="checkbox" id="' . esc_attr( $args['id_remember'] ) . '" value="forever"' . ( $args['value_remember'] ? ' checked="checked"' : '' ) . ' /> ' . esc_html( $args['label_remember'] ) . '</label></p>' : '' ) . '

			<p class="login-submit">

				<input type="submit" name="wp-submit" id="' . esc_attr( $args['id_submit'] ) . '" class="button-primary" value="' . esc_attr( $args['label_log_in'] ) . '" />

				<input type="hidden" name="redirect_to" value="' . esc_url( $args['redirect'] ) . '" />

			</p>

			' . $login_form_bottom . '

		</form>';



	if ( $args['echo'] )

		echo $form;

	else

		return $form;

}



/**

 * Returns the Lost Password URL.

 *

 * Returns the URL that allows the user to retrieve the lost password

 *

 * @since 2.8.0

 *

 * @uses site_url() To generate the lost password URL

 *

 * @param string $redirect Path to redirect to on login.

 * @return string Lost password URL.

 */

function wp_lostpassword_url( $redirect = '' ) {

	$args = array( 'action' => 'lostpassword' );

	if ( !empty($redirect) ) {

		$args['redirect_to'] = $redirect;

	}



	$lostpassword_url = add_query_arg( $args, network_site_url('wp-login.php', 'login') );



	/**

	 * Filter the Lost Password URL.

	 *

	 * @since 2.8.0

	 *

	 * @param string $lostpassword_url The lost password page URL.

	 * @param string $redirect         The path to redirect to on login.

	 */

	return apply_filters( 'lostpassword_url', $lostpassword_url, $redirect );

}



/**

 * Display the Registration or Admin link.

 *

 * Display a link which allows the user to navigate to the registration page if

 * not logged in and registration is enabled or to the dashboard if logged in.

 *

 * @since 1.5.0

 *

 * @param string $before Text to output before the link (defaults to <li>).

 * @param string $after Text to output after the link (defaults to </li>).

 * @param boolean $echo Default to echo and not return the link.

 * @return string|null String when retrieving, null when displaying.

 */

function wp_register( $before = '<li>', $after = '</li>', $echo = true ) {



	if ( ! is_user_logged_in() ) {

		if ( get_option('users_can_register') )

			$link = $before . '<a href="' . esc_url( wp_registration_url() ) . '">' . __('Register') . '</a>' . $after;

		else

			$link = '';

	} else {

		$link = $before . '<a href="' . admin_url() . '">' . __('Site Admin') . '</a>' . $after;

	}



	/**

	 * Filter the HTML link to the Registration or Admin page.

	 *

	 * Users are sent to the admin page if logged-in, or the registration page

	 * if enabled and logged-out.

	 *

	 * @since 1.5.0

	 *

	 * @param string $link The HTML code for the link to the Registration or Admin page.

	 */

	$link = apply_filters( 'register', $link );



	if ( $echo ) {

		echo $link;

	} else {

		return $link;

	}

}



/**

 * Theme container function for the 'wp_meta' action.

 *

 * The 'wp_meta' action can have several purposes, depending on how you use it,

 * but one purpose might have been to allow for theme switching.

 *

 * @since 1.5.0

 *

 * @link http://trac.wordpress.org/ticket/1458 Explanation of 'wp_meta' action.

 */

function wp_meta() {

	/**

	 * Fires before displaying echoed content in the sidebar.

	 *

	 * @since 1.5.0

	 */

	do_action( 'wp_meta' );

}



/**

 * Display information about the blog.

 *

 * @see get_bloginfo() For possible values for the parameter.

 * @since 0.71

 *

 * @param string $show What to display.

 */

function bloginfo( $show='' ) {

	echo get_bloginfo( $show, 'display' );

}



/**

 * Retrieve information about the blog.

 *

 * Some show parameter values are deprecated and will be removed in future

 * versions. These options will trigger the _deprecated_argument() function.

 * The deprecated blog info options are listed in the function contents.

 *

 * The possible values for the 'show' parameter are listed below.

 * <ol>

 * <li><strong>url</strong> - Blog URI to homepage.</li>

 * <li><strong>wpurl</strong> - Blog URI path to WordPress.</li>

 * <li><strong>description</strong> - Secondary title</li>

 * </ol>

 *

 * The feed URL options can be retrieved from 'rdf_url' (RSS 0.91),

 * 'rss_url' (RSS 1.0), 'rss2_url' (RSS 2.0), or 'atom_url' (Atom feed). The

 * comment feeds can be retrieved from the 'comments_atom_url' (Atom comment

 * feed) or 'comments_rss2_url' (RSS 2.0 comment feed).

 *

 * @since 0.71

 *

 * @param string $show Blog info to retrieve.

 * @param string $filter How to filter what is retrieved.

 * @return string Mostly string values, might be empty.

 */

function get_bloginfo( $show = '', $filter = 'raw' ) {



	switch( $show ) {

		case 'home' : // DEPRECATED

		case 'siteurl' : // DEPRECATED

			_deprecated_argument( __FUNCTION__, '2.2', sprintf( __('The <code>%s</code> option is deprecated for the family of <code>bloginfo()</code> functions.' ), $show ) . ' ' . sprintf( __( 'Use the <code>%s</code> option instead.' ), 'url'  ) );

		case 'url' :

			$output = home_url();

			break;

		case 'wpurl' :

			$output = site_url();

			break;

		case 'description':

			$output = get_option('blogdescription');

			break;

		case 'rdf_url':

			$output = get_feed_link('rdf');

			break;

		case 'rss_url':

			$output = get_feed_link('rss');

			break;

		case 'rss2_url':

			$output = get_feed_link('rss2');

			break;

		case 'atom_url':

			$output = get_feed_link('atom');

			break;

		case 'comments_atom_url':

			$output = get_feed_link('comments_atom');

			break;

		case 'comments_rss2_url':

			$output = get_feed_link('comments_rss2');

			break;

		case 'pingback_url':

			$output = site_url( 'xmlrpc.php' );

			break;

		case 'stylesheet_url':

			$output = get_stylesheet_uri();

			break;

		case 'stylesheet_directory':

			$output = get_stylesheet_directory_uri();

			break;

		case 'template_directory':

		case 'template_url':

			$output = get_template_directory_uri();

			break;

		case 'admin_email':

			$output = get_option('admin_email');

			break;

		case 'charset':

			$output = get_option('blog_charset');

			if ('' == $output) $output = 'UTF-8';

			break;

		case 'html_type' :

			$output = get_option('html_type');

			break;

		case 'version':

			global $wp_version;

			$output = $wp_version;

			break;

		case 'language':

			$output = get_locale();

			$output = str_replace('_', '-', $output);

			break;

		case 'text_direction':

			//_deprecated_argument( __FUNCTION__, '2.2', sprintf( __('The <code>%s</code> option is deprecated for the family of <code>bloginfo()</code> functions.' ), $show ) . ' ' . sprintf( __( 'Use the <code>%s</code> function instead.' ), 'is_rtl()'  ) );

			if ( function_exists( 'is_rtl' ) ) {

				$output = is_rtl() ? 'rtl' : 'ltr';

			} else {

				$output = 'ltr';

			}

			break;

		case 'name':

		default:

			$output = get_option('blogname');

			break;

	}



	$url = true;

	if (strpos($show, 'url') === false &&

		strpos($show, 'directory') === false &&

		strpos($show, 'home') === false)

		$url = false;



	if ( 'display' == $filter ) {

		if ( $url ) {

			/**

			 * Filter the URL returned by get_bloginfo().

			 *

			 * @since 2.0.5

			 *

			 * @param mixed $output The URL returned by bloginfo().

			 * @param mixed $show   Type of information requested.

			 */

			$output = apply_filters( 'bloginfo_url', $output, $show );

		} else {

			/**

			 * Filter the site information returned by get_bloginfo().

			 *

			 * @since 0.71

			 *

			 * @param mixed $output The requested non-URL site information.

			 * @param mixed $show   Type of information requested.

			 */

			$output = apply_filters( 'bloginfo', $output, $show );

		}

	}



	return $output;

}



/**

 * Display or retrieve page title for all areas of blog.

 *

 * By default, the page title will display the separator before the page title,

 * so that the blog title will be before the page title. This is not good for

 * title display, since the blog title shows up on most tabs and not what is

 * important, which is the page that the user is looking at.

 *

 * There are also SEO benefits to having the blog title after or to the 'right'

 * or the page title. However, it is mostly common sense to have the blog title

 * to the right with most browsers supporting tabs. You can achieve this by

 * using the seplocation parameter and setting the value to 'right'. This change

 * was introduced around 2.5.0, in case backwards compatibility of themes is

 * important.

 *

 * @since 1.0.0

 *

 * @param string $sep Optional, default is '&raquo;'. How to separate the various items within the page title.

 * @param bool $display Optional, default is true. Whether to display or retrieve title.

 * @param string $seplocation Optional. Direction to display title, 'right'.

 * @return string|null String on retrieve, null when displaying.

 */

function wp_title($sep = '&raquo;', $display = true, $seplocation = '') {

	global $wp_locale;



	$m = get_query_var('m');

	$year = get_query_var('year');

	$monthnum = get_query_var('monthnum');

	$day = get_query_var('day');

	$search = get_query_var('s');

	$title = '';



	$t_sep = '%WP_TITILE_SEP%'; // Temporary separator, for accurate flipping, if necessary



	// If there is a post

	if ( is_single() || ( is_home() && !is_front_page() ) || ( is_page() && !is_front_page() ) ) {

		$title = single_post_title( '', false );

	}



	// If there's a post type archive

	if ( is_post_type_archive() ) {

		$post_type = get_query_var( 'post_type' );

		if ( is_array( $post_type ) )

			$post_type = reset( $post_type );

		$post_type_object = get_post_type_object( $post_type );

		if ( ! $post_type_object->has_archive )

			$title = post_type_archive_title( '', false );

	}



	// If there's a category or tag

	if ( is_category() || is_tag() ) {

		$title = single_term_title( '', false );

	}



	// If there's a taxonomy

	if ( is_tax() ) {

		$term = get_queried_object();

		if ( $term ) {

			$tax = get_taxonomy( $term->taxonomy );

			$title = single_term_title( $tax->labels->name . $t_sep, false );

		}

	}



	// If there's an author

	if ( is_author() && ! is_post_type_archive() ) {

		$author = get_queried_object();

		if ( $author )

			$title = $author->display_name;

	}



	// Post type archives with has_archive should override terms.

	if ( is_post_type_archive() && $post_type_object->has_archive )

		$title = post_type_archive_title( '', false );



	// If there's a month

	if ( is_archive() && !empty($m) ) {

		$my_year = substr($m, 0, 4);

		$my_month = $wp_locale->get_month(substr($m, 4, 2));

		$my_day = intval(substr($m, 6, 2));

		$title = $my_year . ( $my_month ? $t_sep . $my_month : '' ) . ( $my_day ? $t_sep . $my_day : '' );

	}



	// If there's a year

	if ( is_archive() && !empty($year) ) {

		$title = $year;

		if ( !empty($monthnum) )

			$title .= $t_sep . $wp_locale->get_month($monthnum);

		if ( !empty($day) )

			$title .= $t_sep . zeroise($day, 2);

	}



	// If it's a search

	if ( is_search() ) {

		/* translators: 1: separator, 2: search phrase */

		$title = sprintf(__('Search Results %1$s %2$s'), $t_sep, strip_tags($search));

	}



	// If it's a 404 page

	if ( is_404() ) {

		$title = __('Page not found');

	}



	$prefix = '';

	if ( !empty($title) )

		$prefix = " $sep ";



	/**

	 * Filter the parts of the page title.

	 *

	 * @since 4.0.0

	 *

	 * @param array $title_array Parts of the page title.

	 */

	$title_array = apply_filters( 'wp_title_parts', explode( $t_sep, $title ) );



 	// Determines position of the separator and direction of the breadcrumb

	if ( 'right' == $seplocation ) { // sep on right, so reverse the order

		$title_array = array_reverse( $title_array );

		$title = implode( " $sep ", $title_array ) . $prefix;

	} else {

		$title = $prefix . implode( " $sep ", $title_array );

	}



	/**

	 * Filter the text of the page title.

	 *

	 * @since 2.0.0

	 *

	 * @param string $title       Page title.

	 * @param string $sep         Title separator.

	 * @param string $seplocation Location of the separator (left or right).

	 */

	$title = apply_filters( 'wp_title', $title, $sep, $seplocation );



	// Send it out

	if ( $display )

		echo $title;

	else

		return $title;



}



/**

 * Display or retrieve page title for post.

 *

 * This is optimized for single.php template file for displaying the post title.

 *

 * It does not support placing the separator after the title, but by leaving the

 * prefix parameter empty, you can set the title separator manually. The prefix

 * does not automatically place a space between the prefix, so if there should

 * be a space, the parameter value will need to have it at the end.

 *

 * @since 0.71

 *

 * @param string $prefix Optional. What to display before the title.

 * @param bool $display Optional, default is true. Whether to display or retrieve title.

 * @return string|null Title when retrieving, null when displaying or failure.

 */

function single_post_title($prefix = '', $display = true) {

	$_post = get_queried_object();



	if ( !isset($_post->post_title) )

		return;



	/**

	 * Filter the page title for a single post.

	 *

	 * @since 0.71

	 *

	 * @param string $_post_title The single post page title.

	 * @param object $_post       The current queried object as returned by get_queried_object().

	 */

	$title = apply_filters( 'single_post_title', $_post->post_title, $_post );

	if ( $display )

		echo $prefix . $title;

	else

		return $prefix . $title;

}



/**

 * Display or retrieve title for a post type archive.

 *

 * This is optimized for archive.php and archive-{$post_type}.php template files

 * for displaying the title of the post type.

 *

 * @since 3.1.0

 *

 * @param string $prefix Optional. What to display before the title.

 * @param bool $display Optional, default is true. Whether to display or retrieve title.

 * @return string|null Title when retrieving, null when displaying or failure.

 */

function post_type_archive_title( $prefix = '', $display = true ) {

	if ( ! is_post_type_archive() )

		return;



	$post_type = get_query_var( 'post_type' );

	if ( is_array( $post_type ) )

		$post_type = reset( $post_type );



	$post_type_obj = get_post_type_object( $post_type );



	/**

	 * Filter the post type archive title.

	 *

	 * @since 3.1.0

	 *

	 * @param string $post_type_name Post type 'name' label.

	 * @param string $post_type      Post type.

	 */

	$title = apply_filters( 'post_type_archive_title', $post_type_obj->labels->name, $post_type );



	if ( $display )

		echo $prefix . $title;

	else

		return $prefix . $title;

}



/**

 * Display or retrieve page title for category archive.

 *

 * This is useful for category template file or files, because it is optimized

 * for category page title and with less overhead than {@link wp_title()}.

 *

 * It does not support placing the separator after the title, but by leaving the

 * prefix parameter empty, you can set the title separator manually. The prefix

 * does not automatically place a space between the prefix, so if there should

 * be a space, the parameter value will need to have it at the end.

 *

 * @since 0.71

 *

 * @param string $prefix Optional. What to display before the title.

 * @param bool $display Optional, default is true. Whether to display or retrieve title.

 * @return string|null Title when retrieving, null when displaying or failure.

 */

function single_cat_title( $prefix = '', $display = true ) {

	return single_term_title( $prefix, $display );

}



/**

 * Display or retrieve page title for tag post archive.

 *

 * Useful for tag template files for displaying the tag page title. It has less

 * overhead than {@link wp_title()}, because of its limited implementation.

 *

 * It does not support placing the separator after the title, but by leaving the

 * prefix parameter empty, you can set the title separator manually. The prefix

 * does not automatically place a space between the prefix, so if there should

 * be a space, the parameter value will need to have it at the end.

 *

 * @since 2.3.0

 *

 * @param string $prefix Optional. What to display before the title.

 * @param bool $display Optional, default is true. Whether to display or retrieve title.

 * @return string|null Title when retrieving, null when displaying or failure.

 */

function single_tag_title( $prefix = '', $display = true ) {

	return single_term_title( $prefix, $display );

}



/**

 * Display or retrieve page title for taxonomy term archive.

 *

 * Useful for taxonomy term template files for displaying the taxonomy term page title.

 * It has less overhead than {@link wp_title()}, because of its limited implementation.

 *

 * It does not support placing the separator after the title, but by leaving the

 * prefix parameter empty, you can set the title separator manually. The prefix

 * does not automatically place a space between the prefix, so if there should

 * be a space, the parameter value will need to have it at the end.

 *

 * @since 3.1.0

 *

 * @param string $prefix Optional. What to display before the title.

 * @param bool $display Optional, default is true. Whether to display or retrieve title.

 * @return string|null Title when retrieving, null when displaying or failure.

 */

function single_term_title( $prefix = '', $display = true ) {

	$term = get_queried_object();



	if ( !$term )

		return;



	if ( is_category() ) {

		/**

		 * Filter the category archive page title.

		 *

		 * @since 2.0.10

		 *

		 * @param string $term_name Category name for archive being displayed.

		 */

		$term_name = apply_filters( 'single_cat_title', $term->name );

	} elseif ( is_tag() ) {

		/**

		 * Filter the tag archive page title.

		 *

		 * @since 2.3.0

		 *

		 * @param string $term_name Tag name for archive being displayed.

		 */

		$term_name = apply_filters( 'single_tag_title', $term->name );

	} elseif ( is_tax() ) {

		/**

		 * Filter the custom taxonomy archive page title.

		 *

		 * @since 3.1.0

		 *

		 * @param string $term_name Term name for archive being displayed.

		 */

		$term_name = apply_filters( 'single_term_title', $term->name );

	} else {

		return;

	}



	if ( empty( $term_name ) )

		return;



	if ( $display )

		echo $prefix . $term_name;

	else

		return $prefix . $term_name;

}



/**

 * Display or retrieve page title for post archive based on date.

 *

 * Useful for when the template only needs to display the month and year, if

 * either are available. Optimized for just this purpose, so if it is all that

 * is needed, should be better than {@link wp_title()}.

 *

 * It does not support placing the separator after the title, but by leaving the

 * prefix parameter empty, you can set the title separator manually. The prefix

 * does not automatically place a space between the prefix, so if there should

 * be a space, the parameter value will need to have it at the end.

 *

 * @since 0.71

 *

 * @param string $prefix Optional. What to display before the title.

 * @param bool $display Optional, default is true. Whether to display or retrieve title.

 * @return string|null Title when retrieving, null when displaying or failure.

 */

function single_month_title($prefix = '', $display = true ) {

	global $wp_locale;



	$m = get_query_var('m');

	$year = get_query_var('year');

	$monthnum = get_query_var('monthnum');



	if ( !empty($monthnum) && !empty($year) ) {

		$my_year = $year;

		$my_month = $wp_locale->get_month($monthnum);

	} elseif ( !empty($m) ) {

		$my_year = substr($m, 0, 4);

		$my_month = $wp_locale->get_month(substr($m, 4, 2));

	}



	if ( empty($my_month) )

		return false;



	$result = $prefix . $my_month . $prefix . $my_year;



	if ( !$display )

		return $result;

	echo $result;

}



/**

 * Retrieve archive link content based on predefined or custom code.

 *

 * The format can be one of four styles. The 'link' for head element, 'option'

 * for use in the select element, 'html' for use in list (either ol or ul HTML

 * elements). Custom content is also supported using the before and after

 * parameters.

 *

 * The 'link' format uses the link HTML element with the <em>archives</em>

 * relationship. The before and after parameters are not used. The text

 * parameter is used to describe the link.

 *

 * The 'option' format uses the option HTML element for use in select element.

 * The value is the url parameter and the before and after parameters are used

 * between the text description.

 *

 * The 'html' format, which is the default, uses the li HTML element for use in

 * the list HTML elements. The before parameter is before the link and the after

 * parameter is after the closing link.

 *

 * The custom format uses the before parameter before the link ('a' HTML

 * element) and the after parameter after the closing link tag. If the above

 * three values for the format are not used, then custom format is assumed.

 *

 * @since 1.0.0

 *

 * @param string $url URL to archive.

 * @param string $text Archive text description.

 * @param string $format Optional, default is 'html'. Can be 'link', 'option', 'html', or custom.

 * @param string $before Optional.

 * @param string $after Optional.

 * @return string HTML link content for archive.

 */

function get_archives_link($url, $text, $format = 'html', $before = '', $after = '') {

	$text = wptexturize($text);

	$url = esc_url($url);



	if ('link' == $format)

		$link_html = "\t<link rel='archives' title='" . esc_attr( $text ) . "' href='$url' />\n";

	elseif ('option' == $format)

		$link_html = "\t<option value='$url'>$before $text $after</option>\n";

	elseif ('html' == $format)

		$link_html = "\t<li>$before<a href='$url'>$text</a>$after</li>\n";

	else // custom

		$link_html = "\t$before<a href='$url'>$text</a>$after\n";



	/**

	 * Filter the archive link content.

	 *

	 * @since 2.6.0

	 *

	 * @param string $link_html The archive HTML link content.

	 */

	$link_html = apply_filters( 'get_archives_link', $link_html );



	return $link_html;

}



/**

 * Display archive links based on type and format.

 *

 * @since 1.2.0

 *

 * @see get_archives_link()

 *

 * @param string|array $args {

 *     Default archive links arguments. Optional.

 *

 *     @type string     $type            Type of archive to retrieve. Accepts 'daily', 'weekly', 'monthly',

 *                                       'yearly', 'postbypost', or 'alpha'. Both 'postbypost' and 'alpha'

 *                                       display the same archive link list as well as post titles instead

 *                                       of displaying dates. The difference between the two is that 'alpha'

 *                                       will order by post title and 'postbypost' will order by post date.

 *                                       Default 'monthly'.

 *     @type string|int $limit           Number of links to limit the query to. Default empty (no limit).

 *     @type string     $format          Format each link should take using the $before and $after args.

 *                                       Accepts 'link' (`<link>` tag), 'option' (`<option>` tag), 'html'

 *                                       (`<li>` tag), or a custom format, which generates a link anchor

 *                                       with $before preceding and $after succeeding. Default 'html'.

 *     @type string     $before          Markup to prepend to the beginning of each link. Default empty.

 *     @type string     $after           Markup to append to the end of each link. Default empty.

 *     @type bool       $show_post_count Whether to display the post count alongside the link. Default false.

 *     @type bool       $echo            Whether to echo or return the links list. Default 1|true to echo.

 *     @type string     $order           Whether to use ascending or descending order. Accepts 'ASC', or 'DESC'.

 *                                       Default 'DESC'.

 * }

 * @return string|null String when retrieving, null when displaying.

 */

function wp_get_archives( $args = '' ) {

	global $wpdb, $wp_locale;



	$defaults = array(

		'type' => 'monthly', 'limit' => '',

		'format' => 'html', 'before' => '',

		'after' => '', 'show_post_count' => false,

		'echo' => 1, 'order' => 'DESC',

	);



	$r = wp_parse_args( $args, $defaults );



	if ( '' == $r['type'] ) {

		$r['type'] = 'monthly';

	}



	if ( ! empty( $r['limit'] ) ) {

		$r['limit'] = absint( $r['limit'] );

		$r['limit'] = ' LIMIT ' . $r['limit'];

	}



	$order = strtoupper( $r['order'] );

	if ( $order !== 'ASC' ) {

		$order = 'DESC';

	}



	// this is what will separate dates on weekly archive links

	$archive_week_separator = '&#8211;';



	// over-ride general date format ? 0 = no: use the date format set in Options, 1 = yes: over-ride

	$archive_date_format_over_ride = 0;



	// options for daily archive (only if you over-ride the general date format)

	$archive_day_date_format = 'Y/m/d';



	// options for weekly archive (only if you over-ride the general date format)

	$archive_week_start_date_format = 'Y/m/d';

	$archive_week_end_date_format	= 'Y/m/d';



	if ( ! $archive_date_format_over_ride ) {

		$archive_day_date_format = get_option( 'date_format' );

		$archive_week_start_date_format = get_option( 'date_format' );

		$archive_week_end_date_format = get_option( 'date_format' );

	}



	/**

	 * Filter the SQL WHERE clause for retrieving archives.

	 *

	 * @since 2.2.0

	 *

	 * @param string $sql_where Portion of SQL query containing the WHERE clause.

	 * @param array  $r         An array of default arguments.

	 */

	$where = apply_filters( 'getarchives_where', "WHERE post_type = 'post' AND post_status = 'publish'", $r );



	/**

	 * Filter the SQL JOIN clause for retrieving archives.

	 *

	 * @since 2.2.0

	 *

	 * @param string $sql_join Portion of SQL query containing JOIN clause.

	 * @param array  $r        An array of default arguments.

	 */

	$join = apply_filters( 'getarchives_join', '', $r );



	$output = '';



	$last_changed = wp_cache_get( 'last_changed', 'posts' );

	if ( ! $last_changed ) {

		$last_changed = microtime();

		wp_cache_set( 'last_changed', $last_changed, 'posts' );

	}



	$limit = $r['limit'];



	if ( 'monthly' == $r['type'] ) {

		$query = "SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date), MONTH(post_date) ORDER BY post_date $order $limit";

		$key = md5( $query );

		$key = "wp_get_archives:$key:$last_changed";

		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {

			$results = $wpdb->get_results( $query );

			wp_cache_set( $key, $results, 'posts' );

		}

		if ( $results ) {

			$after = $r['after'];

			foreach ( (array) $results as $result ) {

				$url = get_month_link( $result->year, $result->month );

				/* translators: 1: month name, 2: 4-digit year */

				$text = sprintf( __( '%1$s %2$d' ), $wp_locale->get_month( $result->month ), $result->year );

				if ( $r['show_post_count'] ) {

					$r['after'] = '&nbsp;(' . $result->posts . ')' . $after;

				}

				$output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] );

			}

		}

	} elseif ( 'yearly' == $r['type'] ) {

		$query = "SELECT YEAR(post_date) AS `year`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date) ORDER BY post_date $order $limit";

		$key = md5( $query );

		$key = "wp_get_archives:$key:$last_changed";

		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {

			$results = $wpdb->get_results( $query );

			wp_cache_set( $key, $results, 'posts' );

		}

		if ( $results ) {

			$after = $r['after'];

			foreach ( (array) $results as $result) {

				$url = get_year_link( $result->year );

				$text = sprintf( '%d', $result->year );

				if ( $r['show_post_count'] ) {

					$r['after'] = '&nbsp;(' . $result->posts . ')' . $after;

				}

				$output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] );

			}

		}

	} elseif ( 'daily' == $r['type'] ) {

		$query = "SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, DAYOFMONTH(post_date) AS `dayofmonth`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date), MONTH(post_date), DAYOFMONTH(post_date) ORDER BY post_date $order $limit";

		$key = md5( $query );

		$key = "wp_get_archives:$key:$last_changed";

		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {

			$results = $wpdb->get_results( $query );

			$cache[ $key ] = $results;

			wp_cache_set( $key, $results, 'posts' );

		}

		if ( $results ) {

			$after = $r['after'];

			foreach ( (array) $results as $result ) {

				$url  = get_day_link( $result->year, $result->month, $result->dayofmonth );

				$date = sprintf( '%1$d-%2$02d-%3$02d 00:00:00', $result->year, $result->month, $result->dayofmonth );

				$text = mysql2date( $archive_day_date_format, $date );

				if ( $r['show_post_count'] ) {

					$r['after'] = '&nbsp;(' . $result->posts . ')' . $after;

				}

				$output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] );

			}

		}

	} elseif ( 'weekly' == $r['type'] ) {

		$week = _wp_mysql_week( '`post_date`' );

		$query = "SELECT DISTINCT $week AS `week`, YEAR( `post_date` ) AS `yr`, DATE_FORMAT( `post_date`, '%Y-%m-%d' ) AS `yyyymmdd`, count( `ID` ) AS `posts` FROM `$wpdb->posts` $join $where GROUP BY $week, YEAR( `post_date` ) ORDER BY `post_date` $order $limit";

		$key = md5( $query );

		$key = "wp_get_archives:$key:$last_changed";

		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {

			$results = $wpdb->get_results( $query );

			wp_cache_set( $key, $results, 'posts' );

		}

		$arc_w_last = '';

		if ( $results ) {

			$after = $r['after'];

			foreach ( (array) $results as $result ) {

				if ( $result->week != $arc_w_last ) {

					$arc_year       = $result->yr;

					$arc_w_last     = $result->week;

					$arc_week       = get_weekstartend( $result->yyyymmdd, get_option( 'start_of_week' ) );

					$arc_week_start = date_i18n( $archive_week_start_date_format, $arc_week['start'] );

					$arc_week_end   = date_i18n( $archive_week_end_date_format, $arc_week['end'] );

					$url            = sprintf( '%1$s/%2$s%3$sm%4$s%5$s%6$sw%7$s%8$d', home_url(), '', '?', '=', $arc_year, '&amp;', '=', $result->week );

					$text           = $arc_week_start . $archive_week_separator . $arc_week_end;

					if ( $r['show_post_count'] ) {

						$r['after'] = '&nbsp;(' . $result->posts . ')' . $after;

					}

					$output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] );

				}

			}

		}

	} elseif ( ( 'postbypost' == $r['type'] ) || ('alpha' == $r['type'] ) ) {

		$orderby = ( 'alpha' == $r['type'] ) ? 'post_title ASC ' : 'post_date DESC ';

		$query = "SELECT * FROM $wpdb->posts $join $where ORDER BY $orderby $limit";

		$key = md5( $query );

		$key = "wp_get_archives:$key:$last_changed";

		if ( ! $results = wp_cache_get( $key, 'posts' ) ) {

			$results = $wpdb->get_results( $query );

			wp_cache_set( $key, $results, 'posts' );

		}

		if ( $results ) {

			foreach ( (array) $results as $result ) {

				if ( $result->post_date != '0000-00-00 00:00:00' ) {

					$url = get_permalink( $result );

					if ( $result->post_title ) {

						/** This filter is documented in wp-includes/post-template.php */

						$text = strip_tags( apply_filters( 'the_title', $result->post_title, $result->ID ) );

					} else {

						$text = $result->ID;

					}

					$output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] );

				}

			}

		}

	}

	if ( $r['echo'] ) {

		echo $output;

	} else {

		return $output;

	}

}



/**

 * Get number of days since the start of the week.

 *

 * @since 1.5.0

 *

 * @param int $num Number of day.

 * @return int Days since the start of the week.

 */

function calendar_week_mod($num) {

	$base = 7;

	return ($num - $base*floor($num/$base));

}



/**

 * Display calendar with days that have posts as links.

 *

 * The calendar is cached, which will be retrieved, if it exists. If there are

 * no posts for the month, then it will not be displayed.

 *

 * @since 1.0.0

 * @uses calendar_week_mod()

 *

 * @param bool $initial Optional, default is true. Use initial calendar names.

 * @param bool $echo Optional, default is true. Set to false for return.

 * @return string|null String when retrieving, null when displaying.

 */

function get_calendar($initial = true, $echo = true) {

	global $wpdb, $m, $monthnum, $year, $wp_locale, $posts;



	$key = md5( $m . $monthnum . $year );

	if ( $cache = wp_cache_get( 'get_calendar', 'calendar' ) ) {

		if ( is_array($cache) && isset( $cache[ $key ] ) ) {

			if ( $echo ) {

				/** This filter is documented in wp-includes/general-template.php */

				echo apply_filters( 'get_calendar', $cache[$key] );

				return;

			} else {

				/** This filter is documented in wp-includes/general-template.php */

				return apply_filters( 'get_calendar', $cache[$key] );

			}

		}

	}



	if ( !is_array($cache) )

		$cache = array();



	// Quick check. If we have no posts at all, abort!

	if ( !$posts ) {

		$gotsome = $wpdb->get_var("SELECT 1 as test FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' LIMIT 1");

		if ( !$gotsome ) {

			$cache[ $key ] = '';

			wp_cache_set( 'get_calendar', $cache, 'calendar' );

			return;

		}

	}



	if ( isset($_GET['w']) )

		$w = ''.intval($_GET['w']);



	// week_begins = 0 stands for Sunday

	$week_begins = intval(get_option('start_of_week'));



	// Let's figure out when we are

	if ( !empty($monthnum) && !empty($year) ) {

		$thismonth = ''.zeroise(intval($monthnum), 2);

		$thisyear = ''.intval($year);

	} elseif ( !empty($w) ) {

		// We need to get the month from MySQL

		$thisyear = ''.intval(substr($m, 0, 4));

		$d = (($w - 1) * 7) + 6; //it seems MySQL's weeks disagree with PHP's

		$thismonth = $wpdb->get_var("SELECT DATE_FORMAT((DATE_ADD('{$thisyear}0101', INTERVAL $d DAY) ), '%m')");

	} elseif ( !empty($m) ) {

		$thisyear = ''.intval(substr($m, 0, 4));

		if ( strlen($m) < 6 )

				$thismonth = '01';

		else

				$thismonth = ''.zeroise(intval(substr($m, 4, 2)), 2);

	} else {

		$thisyear = gmdate('Y', current_time('timestamp'));

		$thismonth = gmdate('m', current_time('timestamp'));

	}



	$unixmonth = mktime(0, 0 , 0, $thismonth, 1, $thisyear);

	$last_day = date('t', $unixmonth);



	// Get the next and previous month and year with at least one post

	$previous = $wpdb->get_row("SEL…

Large files files are truncated, but you can click here to view the full file