/phpcms/libs/functions/global.func.php

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<?php
/**
 *  global.func.php 公共函数库
 *
 * @copyright			(C) 2005-2010 PHPCMS
 * @license				http://www.phpcms.cn/license/
 * @lastmodify			2010-6-1
 */

/**
 * 返回经addslashes处理过的字符串或数组
 * @param $string 需要处理的字符串或数组
 * @return mixed
 */
function new_addslashes($string){
	if(!is_array($string)) return addslashes($string);
	foreach($string as $key => $val) $string[$key] = new_addslashes($val);
	return $string;
}

/**
 * 返回经stripslashes处理过的字符串或数组
 * @param $string 需要处理的字符串或数组
 * @return mixed
 */
function new_stripslashes($string) {
	if(!is_array($string)) return stripslashes($string);
	foreach($string as $key => $val) $string[$key] = new_stripslashes($val);
	return $string;
}

/**
 * 返回经htmlspecialchars处理过的字符串或数组
 * @param $obj 需要处理的字符串或数组
 * @return mixed
 */
function new_html_special_chars($string) {
	$encoding = 'utf-8';
	if(strtolower(CHARSET)=='gbk') $encoding = 'ISO-8859-15';
	if(!is_array($string)) return htmlspecialchars($string,ENT_QUOTES,$encoding);
	foreach($string as $key => $val) $string[$key] = new_html_special_chars($val);
	return $string;
}

function new_html_entity_decode($string) {
	$encoding = 'utf-8';
	if(strtolower(CHARSET)=='gbk') $encoding = 'ISO-8859-15';
	return html_entity_decode($string,ENT_QUOTES,$encoding);
}

function new_htmlentities($string) {
	$encoding = 'utf-8';
	if(strtolower(CHARSET)=='gbk') $encoding = 'ISO-8859-15';
	return htmlentities($string,ENT_QUOTES,$encoding);
}

/**
 * 安全过滤函数
 *
 * @param $string
 * @return string
 */
function safe_replace($string) {
	$string = str_replace('%20','',$string);
	$string = str_replace('%27','',$string);
	$string = str_replace('%2527','',$string);
	$string = str_replace('*','',$string);
	$string = str_replace('"','&quot;',$string);
	$string = str_replace("'",'',$string);
	$string = str_replace('"','',$string);
	$string = str_replace(';','',$string);
	$string = str_replace('<','&lt;',$string);
	$string = str_replace('>','&gt;',$string);
	$string = str_replace("{",'',$string);
	$string = str_replace('}','',$string);
	$string = str_replace('\\','',$string);
	return $string;
}

/**
 * xss过滤函数
 *
 * @param $string
 * @return string
 */
function remove_xss($string) { 
    $string = preg_replace('/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]+/S', '', $string);

    $parm1 = Array('javascript', 'vbscript', 'expression', 'applet', 'meta', 'xml', 'blink', 'link', 'script', 'embed', 'object', 'iframe', 'frame', 'frameset', 'ilayer', 'layer', 'bgsound', 'title', 'base');

    $parm2 = Array('onabort', 'onactivate', 'onafterprint', 'onafterupdate', 'onbeforeactivate', 'onbeforecopy', 'onbeforecut', 'onbeforedeactivate', 'onbeforeeditfocus', 'onbeforepaste', 'onbeforeprint', 'onbeforeunload', 'onbeforeupdate', 'onblur', 'onbounce', 'oncellchange', 'onchange', 'onclick', 'oncontextmenu', 'oncontrolselect', 'oncopy', 'oncut', 'ondataavailable', 'ondatasetchanged', 'ondatasetcomplete', 'ondblclick', 'ondeactivate', 'ondrag', 'ondragend', 'ondragenter', 'ondragleave', 'ondragover', 'ondragstart', 'ondrop', 'onerror', 'onerrorupdate', 'onfilterchange', 'onfinish', 'onfocus', 'onfocusin', 'onfocusout', 'onhelp', 'onkeydown', 'onkeypress', 'onkeyup', 'onlayoutcomplete', 'onload', 'onlosecapture', 'onmousedown', 'onmouseenter', 'onmouseleave', 'onmousemove', 'onmouseout', 'onmouseover', 'onmouseup', 'onmousewheel', 'onmove', 'onmoveend', 'onmovestart', 'onpaste', 'onpropertychange', 'onreadystatechange', 'onreset', 'onresize', 'onresizeend', 'onresizestart', 'onrowenter', 'onrowexit', 'onrowsdelete', 'onrowsinserted', 'onscroll', 'onselect', 'onselectionchange', 'onselectstart', 'onstart', 'onstop', 'onsubmit', 'onunload');

    $parm = array_merge($parm1, $parm2); 

	for ($i = 0; $i < sizeof($parm); $i++) { 
		$pattern = '/'; 
		for ($j = 0; $j < strlen($parm[$i]); $j++) { 
			if ($j > 0) { 
				$pattern .= '('; 
				$pattern .= '(&#[x|X]0([9][a][b]);?)?'; 
				$pattern .= '|(&#0([9][10][13]);?)?'; 
				$pattern .= ')?'; 
			}
			$pattern .= $parm[$i][$j]; 
		}
		$pattern .= '/i';
		$string = preg_replace($pattern, ' ', $string); 
	}
	return $string;
}

/**
 * 过滤ASCII码从0-28的控制字符
 * @return String
 */
function trim_unsafe_control_chars($str) {
	$rule = '/[' . chr ( 1 ) . '-' . chr ( 8 ) . chr ( 11 ) . '-' . chr ( 12 ) . chr ( 14 ) . '-' . chr ( 31 ) . ']*/';
	return str_replace ( chr ( 0 ), '', preg_replace ( $rule, '', $str ) );
}

/**
 * 格式化文本域内容
 *
 * @param $string 文本域内容
 * @return string
 */
function trim_textarea($string) {
	$string = nl2br ( str_replace ( ' ', '&nbsp;', $string ) );
	return $string;
}

/**
 * 将文本格式成适合js输出的字符串
 * @param string $string 需要处理的字符串
 * @param intval $isjs 是否执行字符串格式化，默认为执行
 * @return string 处理后的字符串
 */
function format_js($string, $isjs = 1) {
	$string = addslashes(str_replace(array("\r", "\n", "\t"), array('', '', ''), $string));
	return $isjs ? 'document.write("'.$string.'");' : $string;
}

/**
 * 转义 javascript 代码标记
 *
 * @param $str
 * @return mixed
 */
 function trim_script($str) {
	if(is_array($str)){
		foreach ($str as $key => $val){
			$str[$key] = trim_script($val);
		}
 	}else{
 		$str = preg_replace ( '/\<([\/]?)script([^\>]*?)\>/si', '&lt;\\1script\\2&gt;', $str );
		$str = preg_replace ( '/\<([\/]?)iframe([^\>]*?)\>/si', '&lt;\\1iframe\\2&gt;', $str );
		$str = preg_replace ( '/\<([\/]?)frame([^\>]*?)\>/si', '&lt;\\1frame\\2&gt;', $str );
		$str = str_replace ( 'javascript:', 'javascript：', $str );
 	}
	return $str;
}
/**
 * 获取当前页面完整URL地址
 */
function get_url() {
	$sys_protocal = isset($_SERVER['SERVER_PORT']) && $_SERVER['SERVER_PORT'] == '443' ? 'https://' : 'http://';
	$php_self = $_SERVER['PHP_SELF'] ? safe_replace($_SERVER['PHP_SELF']) : safe_replace($_SERVER['SCRIPT_NAME']);
	$path_info = isset($_SERVER['PATH_INFO']) ? safe_replace($_SERVER['PATH_INFO']) : '';
	$relate_url = isset($_SERVER['REQUEST_URI']) ? safe_replace($_SERVER['REQUEST_URI']) : $php_self.(isset($_SERVER['QUERY_STRING']) ? '?'.safe_replace($_SERVER['QUERY_STRING']) : $path_info);
	return $sys_protocal.(isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '').$relate_url;
}
/**
 * 字符截取 支持UTF8/GBK
 * @param $string
 * @param $length
 * @param $dot
 */
function str_cut($string, $length, $dot = '...') {
	$strlen = strlen($string);
	if($strlen <= $length) return $string;
	$string = str_replace(array(' ','&nbsp;', '&amp;', '&quot;', '&#039;', '&ldquo;', '&rdquo;', '&mdash;', '&lt;', '&gt;', '&middot;', '&hellip;'), array('∵',' ', '&', '"', "'", '“', '”', '—', '<', '>', '·', '…'), $string);
	$strcut = '';
	if(strtolower(CHARSET) == 'utf-8') {
		$length = intval($length-strlen($dot)-$length/3);
		$n = $tn = $noc = 0;
		while($n < strlen($string)) {
			$t = ord($string[$n]);
			if($t == 9 || $t == 10 || (32 <= $t && $t <= 126)) {
				$tn = 1; $n++; $noc++;
			} elseif(194 <= $t && $t <= 223) {
				$tn = 2; $n += 2; $noc += 2;
			} elseif(224 <= $t && $t <= 239) {
				$tn = 3; $n += 3; $noc += 2;
			} elseif(240 <= $t && $t <= 247) {
				$tn = 4; $n += 4; $noc += 2;
			} elseif(248 <= $t && $t <= 251) {
				$tn = 5; $n += 5; $noc += 2;
			} elseif($t == 252 || $t == 253) {
				$tn = 6; $n += 6; $noc += 2;
			} else {
				$n++;
			}
			if($noc >= $length) {
				break;
			}
		}
		if($noc > $length) {
			$n -= $tn;
		}
		$strcut = substr($string, 0, $n);
		$strcut = str_replace(array('∵', '&', '"', "'", '“', '”', '—', '<', '>', '·', '…'), array(' ', '&amp;', '&quot;', '&#039;', '&ldquo;', '&rdquo;', '&mdash;', '&lt;', '&gt;', '&middot;', '&hellip;'), $strcut);
	} else {
		$dotlen = strlen($dot);
		$maxi = $length - $dotlen - 1;
		$current_str = '';
		$search_arr = array('&',' ', '"', "'", '“', '”', '—', '<', '>', '·', '…','∵');
		$replace_arr = array('&amp;','&nbsp;', '&quot;', '&#039;', '&ldquo;', '&rdquo;', '&mdash;', '&lt;', '&gt;', '&middot;', '&hellip;',' ');
		$search_flip = array_flip($search_arr);
		for ($i = 0; $i < $maxi; $i++) {
			$current_str = ord($string[$i]) > 127 ? $string[$i].$string[++$i] : $string[$i];
			if (in_array($current_str, $search_arr)) {
				$key = $search_flip[$current_str];
				$current_str = str_replace($search_arr[$key], $replace_arr[$key], $current_str);
			}
			$strcut .= $current_str;
		}
	}
	return $strcut.$dot;
}



/**
 * 获取请求ip
 *
 * @return ip地址
 */
function ip() {
	if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
		$ip = getenv('HTTP_CLIENT_IP');
	} elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
		$ip = getenv('HTTP_X_FORWARDED_FOR');
	} elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
		$ip = getenv('REMOTE_ADDR');
	} elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
		$ip = $_SERVER['REMOTE_ADDR'];
	}
	return preg_match ( '/[\d\.]{7,15}/', $ip, $matches ) ? $matches [0] : '';
}

function get_cost_time() {
	$microtime = microtime ( TRUE );
	return $microtime - SYS_START_TIME;
}
/**
 * 程序执行时间
 *
 * @return	int	单位ms
 */
function execute_time() {
	$stime = explode ( ' ', SYS_START_TIME );
	$etime = explode ( ' ', microtime () );
	return number_format ( ($etime [1] + $etime [0] - $stime [1] - $stime [0]), 6 );
}

/**
* 产生随机字符串
*
* @param    int        $length  输出长度
* @param    string     $chars   可选的 ，默认为 0123456789
* @return   string     字符串
*/
function random($length, $chars = '0123456789') {
	$hash = '';
	$max = strlen($chars) - 1;
	for($i = 0; $i < $length; $i++) {
		$hash .= $chars[mt_rand(0, $max)];
	}
	return $hash;
}

/**
* 将字符串转换为数组
*
* @param	string	$data	字符串
* @return	array	返回数组格式，如果，data为空，则返回空数组
*/
function string2array($data) {
	if($data == '') return array();
	@eval("\$array = $data;");
	return $array;
}
/**
* 将数组转换为字符串
*
* @param	array	$data		数组
* @param	bool	$isformdata	如果为0，则不使用new_stripslashes处理，可选参数，默认为1
* @return	string	返回字符串，如果，data为空，则返回空
*/
function array2string($data, $isformdata = 1) {
	if($data == '') return '';
	if($isformdata) $data = new_stripslashes($data);
	return addslashes(var_export($data, TRUE));
}

/**
* 转换字节数为其他单位
*
*
* @param	string	$filesize	字节大小
* @return	string	返回大小
*/
function sizecount($filesize) {
	if ($filesize >= 1073741824) {
		$filesize = round($filesize / 1073741824 * 100) / 100 .' GB';
	} elseif ($filesize >= 1048576) {
		$filesize = round($filesize / 1048576 * 100) / 100 .' MB';
	} elseif($filesize >= 1024) {
		$filesize = round($filesize / 1024 * 100) / 100 . ' KB';
	} else {
		$filesize = $filesize.' Bytes';
	}
	return $filesize;
}
/**
* 字符串加密、解密函数
*
*
* @param	string	$txt		字符串
* @param	string	$operation	ENCODE为加密，DECODE为解密，可选参数，默认为ENCODE，
* @param	string	$key		密钥：数字、字母、下划线
* @param	string	$expiry		过期时间
* @return	string
*/
function sys_auth($string, $operation = 'ENCODE', $key = '', $expiry = 0) {
	$key_length = 4;
	$key = md5($key != '' ? $key : pc_base::load_config('system', 'auth_key'));
	$fixedkey = md5($key);
	$egiskeys = md5(substr($fixedkey, 16, 16));
	$runtokey = $key_length ? ($operation == 'ENCODE' ? substr(md5(microtime(true)), -$key_length) : substr($string, 0, $key_length)) : '';
	$keys = md5(substr($runtokey, 0, 16) . substr($fixedkey, 0, 16) . substr($runtokey, 16) . substr($fixedkey, 16));
	$string = $operation == 'ENCODE' ? sprintf('%010d', $expiry ? $expiry + time() : 0).substr(md5($string.$egiskeys), 0, 16) . $string : base64_decode(substr($string, $key_length));

	$i = 0; $result = '';
	$string_length = strlen($string);
	for ($i = 0; $i < $string_length; $i++){
		$result .= chr(ord($string{$i}) ^ ord($keys{$i % 32}));
	}
	if($operation == 'ENCODE') {
		return $runtokey . str_replace('=', '', base64_encode($result));
	} else {
		if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$egiskeys), 0, 16)) {
			return substr($result, 26);
		} else {
			return '';
		}
	}
}
/**
* 语言文件处理
*
* @param	string		$language	标示符
* @param	array		$pars	转义的数组,二维数组 ,'key1'=>'value1','key2'=>'value2',
* @param	string		$modules 多个模块之间用半角逗号隔开，如：member,guestbook
* @return	string		语言字符
*/
function L($language = 'no_language',$pars = array(), $modules = '') {
	static $LANG = array();
	static $LANG_MODULES = array();
	static $lang = '';
	if(defined('IN_ADMIN')) {
		$lang = SYS_STYLE ? SYS_STYLE : 'zh-cn';
	} else {
		$lang = pc_base::load_config('system','lang');
	}
	if(!$LANG) {
		require_once PC_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.'system.lang.php';
		if(defined('IN_ADMIN')) require_once PC_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.'system_menu.lang.php';
		if(file_exists(PC_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.ROUTE_M.'.lang.php')) require_once PC_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.ROUTE_M.'.lang.php';
	}
	if(!empty($modules)) {
		$modules = explode(',',$modules);
		foreach($modules AS $m) {
			if(!isset($LANG_MODULES[$m])) require_once PC_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.$m.'.lang.php';
		}
	}
	if(!array_key_exists($language,$LANG)) {
		return $language;
	} else {
		$language = $LANG[$language];
		if($pars) {
			foreach($pars AS $_k=>$_v) {
				$language = str_replace('{'.$_k.'}',$_v,$language);
			}
		}
		return $language;
	}
}

/**
 * 模板调用
 *
 * @param $module
 * @param $template
 * @param $istag
 * @return unknown_type
 */
function template($module = 'content', $template = 'index', $style = '') {

	if(strpos($module, 'plugin/')!== false) {
		$plugin = str_replace('plugin/', '', $module);
		return p_template($plugin, $template,$style);
	}
	$module = str_replace('/', DIRECTORY_SEPARATOR, $module);
	if(!empty($style) && preg_match('/([a-z0-9\-_]+)/is',$style)) {
	} elseif (empty($style) && !defined('STYLE')) {
		if(defined('SITEID')) {
			$siteid = SITEID;
		} else {
			$siteid = param::get_cookie('siteid');
		}
		if (!$siteid) $siteid = 1;
		$sitelist = getcache('sitelist','commons');
		if(!empty($siteid)) {
			$style = $sitelist[$siteid]['default_style'];
		}
	} elseif (empty($style) && defined('STYLE')) {
		$style = STYLE;
	} else {
		$style = 'default';
	}
	if(!$style) $style = 'default';
	$template_cache = pc_base::load_sys_class('template_cache');
	$compiledtplfile = PHPCMS_PATH.'caches'.DIRECTORY_SEPARATOR.'caches_template'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.php';
	if(file_exists(PC_PATH.'templates'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html')) {
		if(!file_exists($compiledtplfile) || (@filemtime(PC_PATH.'templates'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html') > @filemtime($compiledtplfile))) {
			$template_cache->template_compile($module, $template, $style);
		}
	} else {
		$compiledtplfile = PHPCMS_PATH.'caches'.DIRECTORY_SEPARATOR.'caches_template'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.php';
		if(!file_exists($compiledtplfile) || (file_exists(PC_PATH.'templates'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html') && filemtime(PC_PATH.'templates'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html') > filemtime($compiledtplfile))) {
			$template_cache->template_compile($module, $template, 'default');
		} elseif (!file_exists(PC_PATH.'templates'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html')) {
			showmessage('Template does not exist.'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html');
		}
	}
	return $compiledtplfile;
}

/**
 * 输出自定义错误
 *
 * @param $errno 错误号
 * @param $errstr 错误描述
 * @param $errfile 报错文件地址
 * @param $errline 错误行号
 * @return string 错误提示
 */

function my_error_handler($errno, $errstr, $errfile, $errline) {
	if($errno==8) return '';
	$errfile = str_replace(PHPCMS_PATH,'',$errfile);
	if(pc_base::load_config('system','errorlog')) {
		error_log('<?php exit;?>'.date('m-d H:i:s',SYS_TIME).' | '.$errno.' | '.str_pad($errstr,30).' | '.$errfile.' | '.$errline."\r\n", 3, CACHE_PATH.'error_log.php');
	} else {
		$str = '<div style="font-size:12px;text-align:left; border-bottom:1px solid #9cc9e0; border-right:1px solid #9cc9e0;padding:1px 4px;color:#000000;font-family:Arial, Helvetica,sans-serif;"><span>errorno:' . $errno . ',str:' . $errstr . ',file:<font color="blue">' . $errfile . '</font>,line' . $errline .'<br /><a href="http://faq.phpcms.cn/?type=file&errno='.$errno.'&errstr='.urlencode($errstr).'&errfile='.urlencode($errfile).'&errline='.$errline.'" target="_blank" style="color:red">Need Help?</a></span></div>';
		echo $str;
	}
}

/**
 * 提示信息页面跳转，跳转地址如果传入数组，页面会提示多个地址供用户选择，默认跳转地址为数组的第一个值，时间为5秒。
 * showmessage('登录成功', array('默认跳转地址'=>'http://www.phpcms.cn'));
 * @param string $msg 提示信息
 * @param mixed(string/array) $url_forward 跳转地址
 * @param int $ms 跳转等待时间
 */
function showmessage($msg, $url_forward = 'goback', $ms = 1250, $dialog = '', $returnjs = '') {
	if(defined('IN_ADMIN')) {
		include(admin::admin_tpl('showmessage', 'admin'));
	} else {
		include(template('content', 'message'));
	}
	exit;
}
/**
 * 查询字符是否存在于某字符串
 *
 * @param $haystack 字符串
 * @param $needle 要查找的字符
 * @return bool
 */
function str_exists($haystack, $needle)
{
	return !(strpos($haystack, $needle) === FALSE);
}

/**
 * 取得文件扩展
 *
 * @param $filename 文件名
 * @return 扩展名
 */
function fileext($filename) {
	return strtolower(trim(substr(strrchr($filename, '.'), 1, 10)));
}

/**
 * 加载模板标签缓存
 * @param string $name 缓存名
 * @param integer $times 缓存时间
 */
function tpl_cache($name,$times = 0) {
	$filepath = 'tpl_data';
	$info = getcacheinfo($name, $filepath);
	if (SYS_TIME - $info['filemtime'] >= $times) {
		return false;
	} else {
		return getcache($name,$filepath);
	}
}

/**
 * 写入缓存，默认为文件缓存，不加载缓存配置。
 * @param $name 缓存名称
 * @param $data 缓存数据
 * @param $filepath 数据路径（模块名称） caches/cache_$filepath/
 * @param $type 缓存类型[file,memcache,apc]
 * @param $config 配置名称
 * @param $timeout 过期时间
 */
function setcache($name, $data, $filepath='', $type='file', $config='', $timeout=0) {
	pc_base::load_sys_class('cache_factory','',0);
	if($config) {
		$cacheconfig = pc_base::load_config('cache');
		$cache = cache_factory::get_instance($cacheconfig)->get_cache($config);
	} else {
		$cache = cache_factory::get_instance()->get_cache($type);
	}

	return $cache->set($name, $data, $timeout, '', $filepath);
}

/**
 * 读取缓存，默认为文件缓存，不加载缓存配置。
 * @param string $name 缓存名称
 * @param $filepath 数据路径（模块名称） caches/cache_$filepath/
 * @param string $config 配置名称
 */
function getcache($name, $filepath='', $type='file', $config='') {
	pc_base::load_sys_class('cache_factory','',0);
	if($config) {
		$cacheconfig = pc_base::load_config('cache');
		$cache = cache_factory::get_instance($cacheconfig)->get_cache($config);
	} else {
		$cache = cache_factory::get_instance()->get_cache($type);
	}
	return $cache->get($name, '', '', $filepath);
}

/**
 * 删除缓存，默认为文件缓存，不加载缓存配置。
 * @param $name 缓存名称
 * @param $filepath 数据路径（模块名称） caches/cache_$filepath/
 * @param $type 缓存类型[file,memcache,apc]
 * @param $config 配置名称
 */
function delcache($name, $filepath='', $type='file', $config='') {
	pc_base::load_sys_class('cache_factory','',0);
	if($config) {
		$cacheconfig = pc_base::load_config('cache');
		$cache = cache_factory::get_instance($cacheconfig)->get_cache($config);
	} else {
		$cache = cache_factory::get_instance()->get_cache($type);
	}
	return $cache->delete($name, '', '', $filepath);
}

/**
 * 读取缓存，默认为文件缓存，不加载缓存配置。
 * @param string $name 缓存名称
 * @param $filepath 数据路径（模块名称） caches/cache_$filepath/
 * @param string $config 配置名称
 */
function getcacheinfo($name, $filepath='', $type='file', $config='') {
	pc_base::load_sys_class('cache_factory');
	if($config) {
		$cacheconfig = pc_base::load_config('cache');
		$cache = cache_factory::get_instance($cacheconfig)->get_cache($config);
	} else {
		$cache = cache_factory::get_instance()->get_cache($type);
	}
	return $cache->cacheinfo($name, '', '', $filepath);
}

/**
 * 生成sql语句，如果传入$in_cloumn 生成格式为 IN('a', 'b', 'c')
 * @param $data 条件数组或者字符串
 * @param $front 连接符
 * @param $in_column 字段名称
 * @return string
 */
function to_sqls($data, $front = ' AND ', $in_column = false) {
	if($in_column && is_array($data)) {
		$ids = '\''.implode('\',\'', $data).'\'';
		$sql = "$in_column IN ($ids)";
		return $sql;
	} else {
		if ($front == '') {
			$front = ' AND ';
		}
		if(is_array($data) && count($data) > 0) {
			$sql = '';
			foreach ($data as $key => $val) {
				$sql .= $sql ? " $front `$key` = '$val' " : " `$key` = '$val' ";
			}
			return $sql;
		} else {
			return $data;
		}
	}
}

/**
 * 分页函数
 *
 * @param $num 信息总数
 * @param $curr_page 当前分页
 * @param $perpage 每页显示数
 * @param $urlrule URL规则
 * @param $array 需要传递的数组，用于增加额外的方法
 * @return 分页
 */
function pages($num, $curr_page, $perpage = 20, $urlrule = '', $array = array(),$setpages = 10) {
	if(defined('URLRULE') && $urlrule == '') {
		$urlrule = URLRULE;
		$array = $GLOBALS['URL_ARRAY'];
	} elseif($urlrule == '') {
		$urlrule = url_par('page={$page}');
	}
	$multipage = '';
	if($num > $perpage) {
		$page = $setpages+1;
		$offset = ceil($setpages/2-1);
		$pages = ceil($num / $perpage);
		if (defined('IN_ADMIN') && !defined('PAGES')) define('PAGES', $pages);
		$from = $curr_page - $offset;
		$to = $curr_page + $offset;
		$more = 0;
		if($page >= $pages) {
			$from = 2;
			$to = $pages-1;
		} else {
			if($from <= 1) {
				$to = $page-1;
				$from = 2;
			}  elseif($to >= $pages) {
				$from = $pages-($page-2);
				$to = $pages-1;
			}
			$more = 1;
		}
		$multipage .= '<a class="a1">'.$num.L('page_item').'</a>';
		if($curr_page>0) {
			$multipage .= ' <a href="'.pageurl($urlrule, $curr_page-1, $array).'" class="a1">'.L('previous').'</a>';
			if($curr_page==1) {
				$multipage .= ' <span>1</span>';
			} elseif($curr_page>6 && $more) {
				$multipage .= ' <a href="'.pageurl($urlrule, 1, $array).'">1</a>..';
			} else {
				$multipage .= ' <a href="'.pageurl($urlrule, 1, $array).'">1</a>';
			}
		}
		for($i = $from; $i <= $to; $i++) {
			if($i != $curr_page) {
				$multipage .= ' <a href="'.pageurl($urlrule, $i, $array).'">'.$i.'</a>';
			} else {
				$multipage .= ' <span>'.$i.'</span>';
			}
		}
		if($curr_page<$pages) {
			if($curr_page<$pages-5 && $more) {
				$multipage .= ' ..<a href="'.pageurl($urlrule, $pages, $array).'">'.$pages.'</a> <a href="'.pageurl($urlrule, $curr_page+1, $array).'" class="a1">'.L('next').'</a>';
			} else {
				$multipage .= ' <a href="'.pageurl($urlrule, $pages, $array).'">'.$pages.'</a> <a href="'.pageurl($urlrule, $curr_page+1, $array).'" class="a1">'.L('next').'</a>';
			}
		} elseif($curr_page==$pages) {
			$multipage .= ' <span>'.$pages.'</span> <a href="'.pageurl($urlrule, $curr_page, $array).'" class="a1">'.L('next').'</a>';
		} else {
			$multipage .= ' <a href="'.pageurl($urlrule, $pages, $array).'">'.$pages.'</a> <a href="'.pageurl($urlrule, $curr_page+1, $array).'" class="a1">'.L('next').'</a>';
		}
	}
	return $multipage;
}
/**
 * 返回分页路径
 *
 * @param $urlrule 分页规则
 * @param $page 当前页
 * @param $array 需要传递的数组，用于增加额外的方法
 * @return 完整的URL路径
 */
function pageurl($urlrule, $page, $array = array()) {
	if(strpos($urlrule, '~')) {
		$urlrules = explode('~', $urlrule);
		$urlrule = $page < 2 ? $urlrules[0] : $urlrules[1];
	}
	$findme = array('{$page}');
	$replaceme = array($page);
	if (is_array($array)) foreach ($array as $k=>$v) {
		$findme[] = '{$'.$k.'}';
		$replaceme[] = $v;
	}
	$url = str_replace($findme, $replaceme, $urlrule);
	$url = str_replace(array('http://','//','~'), array('~','/','http://'), $url);
	return $url;
}

/**
 * URL路径解析，pages 函数的辅助函数
 *
 * @param $par 传入需要解析的变量 默认为，page={$page}
 * @param $url URL地址
 * @return URL
 */
function url_par($par, $url = '') {
	if($url == '') $url = get_url();
	$pos = strpos($url, '?');
	if($pos === false) {
		$url .= '?'.$par;
	} else {
		$querystring = substr(strstr($url, '?'), 1);
		parse_str($querystring, $pars);
		$query_array = array();
		foreach($pars as $k=>$v) {
			if($k != 'page') $query_array[$k] = $v;
		}
		$querystring = http_build_query($query_array).'&'.$par;
		$url = substr($url, 0, $pos).'?'.$querystring;
	}
	return $url;
}

/**
 * 判断email格式是否正确
 * @param $email
 */
function is_email($email) {
	return strlen($email) > 6 && preg_match("/^[\w\-\.]+@[\w\-\.]+(\.\w+)+$/", $email);
}

/**
 * iconv 编辑转换
 */
if (!function_exists('iconv')) {
	function iconv($in_charset, $out_charset, $str) {
		$in_charset = strtoupper($in_charset);
		$out_charset = strtoupper($out_charset);
		if (function_exists('mb_convert_encoding')) {
			return mb_convert_encoding($str, $out_charset, $in_charset);
		} else {
			pc_base::load_sys_func('iconv');
			$in_charset = strtoupper($in_charset);
			$out_charset = strtoupper($out_charset);
			if ($in_charset == 'UTF-8' && ($out_charset == 'GBK' || $out_charset == 'GB2312')) {
				return utf8_to_gbk($str);
			}
			if (($in_charset == 'GBK' || $in_charset == 'GB2312') && $out_charset == 'UTF-8') {
				return gbk_to_utf8($str);
			}
			return $str;
		}
	}
}

/**
 * 代码广告展示函数
 * @param intval $siteid 所属站点
 * @param intval $id 广告ID
 * @return 返回广告代码
 */
function show_ad($siteid, $id) {
	$siteid = intval($siteid);
	$id = intval($id);
	if(!$id || !$siteid) return false;
	$p = pc_base::load_model('poster_model');
	$r = $p->get_one(array('spaceid'=>$id, 'siteid'=>$siteid), 'disabled, setting', '`id` ASC');
	if ($r['disabled']) return '';
	if ($r['setting']) {
		$c = string2array($r['setting']);
	} else {
		$r['code'] = '';
	}
	return $c['code'];
}

/**
 * 获取当前的站点ID
 */
function get_siteid() {
	static $siteid;
	if (!empty($siteid)) return $siteid;
	if (defined('IN_ADMIN')) {
		if ($d = param::get_cookie('siteid')) {
			$siteid = $d;
		} else {
			return '';
		}
	} else {
		$data = getcache('sitelist', 'commons');
		if(!is_array($data)) return '1';
		$site_url = SITE_PROTOCOL.SITE_URL;
		foreach ($data as $v) {
			if ($v['url'] == $site_url.'/') $siteid = $v['siteid'];
		}
	}
	if (empty($siteid)) $siteid = 1;
	return $siteid;
}

/**
 * 获取用户昵称
 * 不传入userid取当前用户nickname,如果nickname为空取username
 * 传入field，取用户$field字段信息
 */
function get_nickname($userid='', $field='') {
	$return = '';
	if(is_numeric($userid)) {
		$member_db = pc_base::load_model('member_model');
		$memberinfo = $member_db->get_one(array('userid'=>$userid));
		if(!empty($field) && $field != 'nickname' && isset($memberinfo[$field]) &&!empty($memberinfo[$field])) {
			$return = $memberinfo[$field];
		} else {
			$return = isset($memberinfo['nickname']) && !empty($memberinfo['nickname']) ? $memberinfo['nickname'].'('.$memberinfo['username'].')' : $memberinfo['username'];
		}
	} else {
		if (param::get_cookie('_nickname')) {
			$return .= '('.param::get_cookie('_nickname').')';
		} else {
			$return .= '('.param::get_cookie('_username').')';
		}
	}
	return $return;
}

/**
 * 获取用户信息
 * 不传入$field返回用户所有信息,
 * 传入field，取用户$field字段信息
 */
function get_memberinfo($userid, $field='') {
	if(!is_numeric($userid)) {
		return false;
	} else {
		static $memberinfo;
		if (!isset($memberinfo[$userid])) {
			$member_db = pc_base::load_model('member_model');
			$memberinfo[$userid] = $member_db->get_one(array('userid'=>$userid));
		}
		if(!empty($field) && !empty($memberinfo[$userid][$field])) {
			return $memberinfo[$userid][$field];
		} else {
			return $memberinfo[$userid];
		}
	}
}

/**
 * 通过 username 值，获取用户所有信息
 * 获取用户信息
 * 不传入$field返回用户所有信息,
 * 传入field，取用户$field字段信息
 */
function get_memberinfo_buyusername($username, $field='') {
	if(empty($username)){return false;}
	static $memberinfo;
	if (!isset($memberinfo[$username])) {
		$member_db = pc_base::load_model('member_model');
		$memberinfo[$username] = $member_db->get_one(array('username'=>$username));
	}
	if(!empty($field) && !empty($memberinfo[$username][$field])) {
		return $memberinfo[$username][$field];
	} else {
		return $memberinfo[$username];
	}
}

/**
 * 获取用户头像，建议传入phpssouid
 * @param $uid 默认为phpssouid
 * @param $is_userid $uid是否为v9 userid，如果为真，执行sql查询此用户的phpssouid
 * @param $size 头像大小 有四种[30x30 45x45 90x90 180x180] 默认30
 */
function get_memberavatar($uid, $is_userid='', $size='30') {
	if($is_userid) {
		$db = pc_base::load_model('member_model');
		$memberinfo = $db->get_one(array('userid'=>$uid));
		if(isset($memberinfo['phpssouid'])) {
			$uid = $memberinfo['phpssouid'];
		} else {
			return false;
		}
	}

	pc_base::load_app_class('client', 'member', 0);
	define('APPID', pc_base::load_config('system', 'phpsso_appid'));
	$phpsso_api_url = pc_base::load_config('system', 'phpsso_api_url');
	$phpsso_auth_key = pc_base::load_config('system', 'phpsso_auth_key');
	$client = new client($phpsso_api_url, $phpsso_auth_key);
	$avatar = $client->ps_getavatar($uid);
	if(isset($avatar[$size])) {
		return $avatar[$size];
	} else {
		return false;
	}
}

/**
 * 调用关联菜单
 * @param $linkageid 联动菜单id
 * @param $id 生成联动菜单的样式id
 * @param $defaultvalue 默认值
 */
function menu_linkage($linkageid = 0, $id = 'linkid', $defaultvalue = 0) {
	$linkageid = intval($linkageid);
	$datas = array();
	$datas = getcache($linkageid,'linkage');
	$infos = $datas['data'];

	if($datas['style']=='1') {
		$title = $datas['title'];
		$container = 'content'.random(3).date('is');
		if(!defined('DIALOG_INIT_1')) {
			define('DIALOG_INIT_1', 1);
			$string .= '<script type="text/javascript" src="'.JS_PATH.'dialog.js"></script>';
			//TODO $string .= '<link href="'.CSS_PATH.'dialog.css" rel="stylesheet" type="text/css">';
		}
		if(!defined('LINKAGE_INIT_1')) {
			define('LINKAGE_INIT_1', 1);
			$string .= '<script type="text/javascript" src="'.JS_PATH.'linkage/js/pop.js"></script>';
		}
		$var_div = $defaultvalue && (ROUTE_A=='edit' || ROUTE_A=='account_manage_info'  || ROUTE_A=='info_publish' || ROUTE_A=='orderinfo') ? menu_linkage_level($defaultvalue,$linkageid,$infos) : $datas['title'];
		$var_input = $defaultvalue && (ROUTE_A=='edit' || ROUTE_A=='account_manage_info'  || ROUTE_A=='info_publish') ? '<input type="hidden" name="info['.$id.']" value="'.$defaultvalue.'">' : '<input type="hidden" name="info['.$id.']" value="">';
		$string .= '<div name="'.$id.'" value="" id="'.$id.'" class="ib">'.$var_div.'</div>'.$var_input.' <input type="button" name="btn_'.$id.'" class="button" value="'.L('linkage_select').'" onclick="open_linkage(\''.$id.'\',\''.$title.'\','.$container.',\''.$linkageid.'\')">';
		$string .= '<script type="text/javascript">';
		$string .= 'var returnid_'.$id.'= \''.$id.'\';';
		$string .= 'var returnkeyid_'.$id.' = \''.$linkageid.'\';';
		$string .=  'var '.$container.' = new Array(';
		foreach($infos AS $k=>$v) {
			if($v['parentid'] == 0) {
				$s[]='new Array(\''.$v['linkageid'].'\',\''.$v['name'].'\',\''.$v['parentid'].'\')';
			} else {
				continue;
			}
		}
		$s = implode(',',$s);
		$string .=$s;
		$string .= ')';
		$string .= '</script>';
		
	} elseif($datas['style']=='2') {
		if(!defined('LINKAGE_INIT_1')) {
			define('LINKAGE_INIT_1', 1);
			$string .= '<script type="text/javascript" src="'.JS_PATH.'linkage/js/jquery.ld.js"></script>';
		}
		$default_txt = '';
		if($defaultvalue) {
				$default_txt = menu_linkage_level($defaultvalue,$linkageid,$infos);
				$default_txt = '["'.str_replace(' > ','","',$default_txt).'"]';
		}
		$string .= $defaultvalue && (ROUTE_A=='edit' || ROUTE_A=='account_manage_info'  || ROUTE_A=='info_publish') ? '<input type="hidden" name="info['.$id.']"  id="'.$id.'" value="'.$defaultvalue.'">' : '<input type="hidden" name="info['.$id.']"  id="'.$id.'" value="">';

		for($i=1;$i<=$datas['setting']['level'];$i++) {
			$string .='<select class="pc-select-'.$id.'" name="'.$id.'-'.$i.'" id="'.$id.'-'.$i.'" width="100"><option value="">请选择菜单</option></select> ';
		}

		$string .= '<script type="text/javascript">
					$(function(){
						var $ld5 = $(".pc-select-'.$id.'");					  
						$ld5.ld({ajaxOptions : {"url" : "'.APP_PATH.'api.php?op=get_linkage&act=ajax_select&keyid='.$linkageid.'"},defaultParentId : 0,style : {"width" : 120}})	 
						var ld5_api = $ld5.ld("api");
						ld5_api.selected('.$default_txt.');
						$ld5.bind("change",onchange);
						function onchange(e){
							var $target = $(e.target);
							var index = $ld5.index($target);
							$("#'.$id.'-'.$i.'").remove();
							$("#'.$id.'").val($ld5.eq(index).show().val());
							index ++;
							$ld5.eq(index).show();								}
					})
		</script>';
			
	} else {
		$title = $defaultvalue ? $infos[$defaultvalue]['name'] : $datas['title'];
		$colObj = random(3).date('is');
		$string = '';
		if(!defined('LINKAGE_INIT')) {
			define('LINKAGE_INIT', 1);
			$string .= '<script type="text/javascript" src="'.JS_PATH.'linkage/js/mln.colselect.js"></script>';
			if(defined('IN_ADMIN')) {
				$string .= '<link href="'.JS_PATH.'linkage/style/admin.css" rel="stylesheet" type="text/css">';
			} else {
				$string .= '<link href="'.JS_PATH.'linkage/style/css.css" rel="stylesheet" type="text/css">';
			}
		}
		$string .= '<input type="hidden" name="info['.$id.']" value="1"><div id="'.$id.'"></div>';
		$string .= '<script type="text/javascript">';
		$string .= 'var colObj'.$colObj.' = {"Items":[';

		foreach($infos AS $k=>$v) {
			$s .= '{"name":"'.$v['name'].'","topid":"'.$v['parentid'].'","colid":"'.$k.'","value":"'.$k.'","fun":function(){}},';
		}

		$string .= substr($s, 0, -1);
		$string .= ']};';
		$string .= '$("#'.$id.'").mlnColsel(colObj'.$colObj.',{';
		$string .= 'title:"'.$title.'",';
		$string .= 'value:"'.$defaultvalue.'",';
		$string .= 'width:100';
		$string .= '});';
		$string .= '</script>';
	}
	return $string;
}

/**
 * 联动菜单层级
 */

function menu_linkage_level($linkageid,$keyid,$infos,$result=array()) {
	if(array_key_exists($linkageid,$infos)) {
		$result[]=$infos[$linkageid]['name'];
		return menu_linkage_level($infos[$linkageid]['parentid'],$keyid,$infos,$result);
	}
	krsort($result);
	return implode(' > ',$result);
}
/**
 * 通过catid获取显示菜单完整结构
 * @param  $menuid 菜单ID
 * @param  $cache_file 菜单缓存文件名称
 * @param  $cache_path 缓存文件目录
 * @param  $key 取得缓存值的键值名称
 * @param  $parentkey 父级的ID
 * @param  $linkstring 链接字符
 */
function menu_level($menuid, $cache_file, $cache_path = 'commons', $key = 'catname', $parentkey = 'parentid', $linkstring = ' > ', $result=array()) {
	$menu_arr = getcache($cache_file, $cache_path);
	if (array_key_exists($menuid, $menu_arr)) {
		$result[] = $menu_arr[$menuid][$key];
		return menu_level($menu_arr[$menuid][$parentkey], $cache_file, $cache_path, $key, $parentkey, $linkstring, $result);
	}
	krsort($result);
	return implode($linkstring, $result);
}
/**
 * 通过id获取显示联动菜单
 * @param  $linkageid 联动菜单ID
 * @param  $keyid 菜单keyid
 * @param  $space 菜单间隔符
 * @param  $tyoe 1 返回间隔符链接，完整路径名称 3 返回完整路径数组，2返回当前联动菜单名称，4 直接返回ID
 * @param  $result 递归使用字段1
 * @param  $infos 递归使用字段2
 */
function get_linkage($linkageid, $keyid, $space = '>', $type = 1, $result = array(), $infos = array()) {
	if($space=='' || !isset($space))$space = '>';
	if(!$infos) {
		$datas = getcache($keyid,'linkage');
		$infos = $datas['data'];
	}
	if($type == 1 || $type == 3 || $type == 4) {
		if(array_key_exists($linkageid,$infos)) {
			$result[]= ($type == 1) ? $infos[$linkageid]['name'] : (($type == 4) ? $linkageid :$infos[$linkageid]);
			return get_linkage($infos[$linkageid]['parentid'], $keyid, $space, $type, $result, $infos);
		} else {
			if(count($result)>0) {
				krsort($result);
				if($type == 1 || $type == 4) $result = implode($space,$result);
				return $result;
			} else {
				return $result;
			}
		}
	} else {
		return $infos[$linkageid]['name'];
	}
}
/**
 * IE浏览器判断
 */

function is_ie() {
	$useragent = strtolower($_SERVER['HTTP_USER_AGENT']);
	if((strpos($useragent, 'opera') !== false) || (strpos($useragent, 'konqueror') !== false)) return false;
	if(strpos($useragent, 'msie ') !== false) return true;
	return false;
}


/**
 * 文件下载
 * @param $filepath 文件路径
 * @param $filename 文件名称
 */

function file_down($filepath, $filename = '') {
	if(!$filename) $filename = basename($filepath);
	if(is_ie()) $filename = rawurlencode($filename);
	$filetype = fileext($filename);
	$filesize = sprintf("%u", filesize($filepath));
	if(ob_get_length() !== false) @ob_end_clean();
	header('Pragma: public');
	header('Last-Modified: '.gmdate('D, d M Y H:i:s') . ' GMT');
	header('Cache-Control: no-store, no-cache, must-revalidate');
	header('Cache-Control: pre-check=0, post-check=0, max-age=0');
	header('Content-Transfer-Encoding: binary');
	header('Content-Encoding: none');
	header('Content-type: '.$filetype);
	header('Content-Disposition: attachment; filename="'.$filename.'"');
	header('Content-length: '.$filesize);
	readfile($filepath);
	exit;
}

/**
 * 判断字符串是否为utf8编码，英文和半角字符返回ture
 * @param $string
 * @return bool
 */
function is_utf8($string) {
	return preg_match('%^(?:
					[\x09\x0A\x0D\x20-\x7E] # ASCII
					| [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
					| \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
					| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
					| \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
					| \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
					| [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
					| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
					)*$%xs', $string);
}

/**
 * 组装生成ID号
 * @param $modules 模块名
 * @param $contentid 内容ID
 * @param $siteid 站点ID
 */
function id_encode($modules,$contentid, $siteid) {
	return urlencode($modules.'-'.$contentid.'-'.$siteid);
}

/**
 * 解析ID
 * @param $id 评论ID
 */
function id_decode($id) {
	return explode('-', $id);
}

/**
 * 对用户的密码进行加密
 * @param $password
 * @param $encrypt //传入加密串，在修改密码时做认证
 * @return array/password
 */
function password($password, $encrypt='') {
	$pwd = array();
	$pwd['encrypt'] =  $encrypt ? $encrypt : create_randomstr();
	$pwd['password'] = md5(md5(trim($password)).$pwd['encrypt']);
	return $encrypt ? $pwd['password'] : $pwd;
}
/**
 * 生成随机字符串
 * @param string $lenth 长度
 * @return string 字符串
 */
function create_randomstr($lenth = 6) {
	return random($lenth, '123456789abcdefghijklmnpqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ');
}

/**
 * 检查密码长度是否符合规定
 *
 * @param STRING $password
 * @return 	TRUE or FALSE
 */
function is_password($password) {
	$strlen = strlen($password);
	if($strlen >= 6 && $strlen <= 20) return true;
	return false;
}

 /**
 * 检测输入中是否含有错误字符
 *
 * @param char $string 要检查的字符串名称
 * @return TRUE or FALSE
 */
function is_badword($string) {
	$badwords = array("\\",'&',' ',"'",'"','/','*',',','<','>',"\r","\t","\n","#");
	foreach($badwords as $value){
		if(strpos($string, $value) !== FALSE) {
			return TRUE;
		}
	}
	return FALSE;
}

/**
 * 检查用户名是否符合规定
 *
 * @param STRING $username 要检查的用户名
 * @return 	TRUE or FALSE
 */
function is_username($username) {
	$strlen = strlen($username);
	if(is_badword($username) || !preg_match("/^[a-zA-Z0-9_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]+$/", $username)){
		return false;
	} elseif ( 20 < $strlen || $strlen < 2 ) {
		return false;
	}
	return true;
}

/**
 * 检查id是否存在于数组中
 *
 * @param $id
 * @param $ids
 * @param $s
 */
function check_in($id, $ids = '', $s = ',') {
	if(!$ids) return false;
	$ids = explode($s, $ids);
	return is_array($id) ? array_intersect($id, $ids) : in_array($id, $ids);
}

/**
 * 对数据进行编码转换
 * @param array/string $data       数组
 * @param string $input     需要转换的编码
 * @param string $output    转换后的编码
 */
function array_iconv($data, $input = 'gbk', $output = 'utf-8') {
	if (!is_array($data)) {
		return iconv($input, $output, $data);
	} else {
		foreach ($data as $key=>$val) {
			if(is_array($val)) {
				$data[$key] = array_iconv($val, $input, $output);
			} else {
				$data[$key] = iconv($input, $output, $val);
			}
		}
		return $data;
	}
}

/**
 * 生成缩略图函数
 * @param  $imgurl 图片路径
 * @param  $width  缩略图宽度
 * @param  $height 缩略图高度
 * @param  $autocut 是否自动裁剪 默认裁剪，当高度或宽度有一个数值为0是，自动关闭
 * @param  $smallpic 无图片是默认图片路径
 */
function thumb($imgurl, $width = 100, $height = 100 ,$autocut = 1, $smallpic = 'nopic.gif') {
	global $image;
	$upload_url = pc_base::load_config('system','upload_url');
	$upload_path = pc_base::load_config('system','upload_path');
	if(empty($imgurl)) return IMG_PATH.$smallpic;
	$imgurl_replace= str_replace($upload_url, '', $imgurl);
	if(!extension_loaded('gd') || strpos($imgurl_replace, '://')) return $imgurl;
	if(!file_exists($upload_path.$imgurl_replace)) return IMG_PATH.$smallpic;

	list($width_t, $height_t, $type, $attr) = getimagesize($upload_path.$imgurl_replace);
	if($width>=$width_t || $height>=$height_t) return $imgurl;

	$newimgurl = dirname($imgurl_replace).'/thumb_'.$width.'_'.$height.'_'.basename($imgurl_replace);

	if(file_exists($upload_path.$newimgurl)) return $upload_url.$newimgurl;

	if(!is_object($image)) {
		pc_base::load_sys_class('image','','0');
		$image = new image(1,0);
	}
	return $image->thumb($upload_path.$imgurl_replace, $upload_path.$newimgurl, $width, $height, '', $autocut) ? $upload_url.$newimgurl : $imgurl;
}

/**
 * 水印添加
 * @param $source 原图片路径
 * @param $target 生成水印图片途径，默认为空，覆盖原图
 * @param $siteid 站点id，系统需根据站点id获取水印信息
 */
function watermark($source, $target = '',$siteid) {
	global $image_w;
	if(empty($source)) return $source;
	if(!extension_loaded('gd') || strpos($source, '://')) return $source;
	if(!$target) $target = $source;
	if(!is_object($image_w)){
		pc_base::load_sys_class('image','','0');
		$image_w = new image(0,$siteid);
	}
		$image_w->watermark($source, $target);
	return $target;
}

/**
 * 当前路径
 * 返回指定栏目路径层级
 * @param $catid 栏目id
 * @param $symbol 栏目间隔符
 */
function catpos($catid, $symbol=' > '){
	$category_arr = array();
	$siteids = getcache('category_content','commons');
	$siteid = $siteids[$catid];
	$category_arr = getcache('category_content_'.$siteid,'commons');
	if(!isset($category_arr[$catid])) return '';
	$pos = '';
	$siteurl = siteurl($category_arr[$catid]['siteid']);
	$arrparentid = array_filter(explode(',', $category_arr[$catid]['arrparentid'].','.$catid));
	foreach($arrparentid as $catid) {
		$url = $category_arr[$catid]['url'];
		if(strpos($url, '://') === false) $url = $siteurl.$url;
		$pos .= '<a href="'.$url.'">'.$category_arr[$catid]['catname'].'</a>'.$symbol;
	}
	return $pos;
}

/**
 * 根据catid获取子栏目数据的sql语句
 * @param string $module 缓存文件名
 * @param intval $catid 栏目ID
 */

function get_sql_catid($file = 'category_content_1', $catid = 0, $module = 'commons') {
	$category = getcache($file,$module);
	$catid = intval($catid);
	if(!isset($category[$catid])) return false;
	return $category[$catid]['child'] ? " `catid` IN(".$category[$catid]['arrchildid'].") " : " `catid`=$catid ";
}

/**
 * 获取子栏目
 * @param $parentid 父级id
 * @param $type 栏目类型
 * @param $self 是否包含本身 0为不包含
 * @param $siteid 站点id
 */
function subcat($parentid = NULL, $type = NULL,$self = '0', $siteid = '') {
	if (empty($siteid)) $siteid = get_siteid();
	$category = getcache('category_content_'.$siteid,'commons');
	foreach($category as $id=>$cat) {
		if($cat['siteid'] == $siteid && ($parentid === NULL || $cat['parentid'] == $parentid) && ($type === NULL || $cat['type'] == $type)) $subcat[$id] = $cat;
		if($self == 1 && $cat['catid'] == $parentid && !$cat['child'])  $subcat[$id] = $cat;
	}
	return $subcat;
}

/**
 * 获取内容地址
 * @param $catid   栏目ID
 * @param $id      文章ID
 * @param $allurl  是否以绝对路径返回
 */
function go($catid,$id, $allurl = 0) {
	static $category;
	if(empty($category)) {
		$siteids = getcache('category_content','commons');
		$siteid = $siteids[$catid];
		$category = getcache('category_content_'.$siteid,'commons');
	}
	$id = intval($id);
	if(!$id || !isset($category[$catid])) return '';
	$modelid = $category[$catid]['modelid'];
	if(!$modelid) return '';
	$db = pc_base::load_model('content_model');
	$db->set_model($modelid);
	$r = $db->get_one(array('id'=>$id), '`url`');
	if (!empty($allurl)) {
		if (strpos($r['url'], '://')===false) {
			if (strpos($category[$catid]['url'], '://') === FALSE) {
				$site = siteinfo($category[$catid]['siteid']);
				$r['url'] = substr($site['domain'], 0, -1).$r['url'];
			} else {
				$r['url'] = $category[$catid]['url'].$r['url'];
			}
		}
	}

	return $r['url'];
}

/**
 * 将附件地址转换为绝对地址
 * @param $path 附件地址
 */
function atturl($path) {
	if(strpos($path, ':/')) {
		return $path;
	} else {
		$sitelist = getcache('sitelist','commons');
		$siteid =  get_siteid();
		$siteurl = $sitelist[$siteid]['domain'];
		$domainlen = strlen($sitelist[$siteid]['domain'])-1;
		$path = $siteurl.$path;
		$path = substr_replace($path, '/', strpos($path, '//',$domainlen),2);
		return 	$path;
	}
}

/**
 * 判断模块是否安装
 * @param $m	模块名称
 */
function module_exists($m = '') {
	if ($m=='admin') return true;
	$modules = getcache('modules', 'commons');
	$modules = array_keys($modules);
	return in_array($m, $modules);
}

/**
 * 生成SEO
 * @param $siteid       站点ID
 * @param $catid        栏目ID
 * @param $title        标题
 * @param $description  描述
 * @param $keyword      关键词
 */
function seo($siteid, $catid = '', $title = '', $description = '', $keyword = '') {
	if (!empty($title))$title = strip_tags($title);
	if (!empty($description)) $description = strip_tags($description);
	if (!empty($keyword)) $keyword = str_replace(' ', ',', strip_tags($keyword));
	$sites = getcache('sitelist', 'commons');
	$site = $sites[$siteid];
	$cat = array();
	if (!empty($catid)) {
		$siteids = getcache('category_content','commons');
		$siteid = $siteids[$catid];
		$categorys = getcache('category_content_'.$siteid,'commons');
		$cat = $categorys[$catid];
		$cat['setting'] = string2array($cat['setting']);
	}
	$seo['site_title'] =isset($site['site_title']) && !empty($site['site_title']) ? $site['site_title'] : $site['name'];
	$seo['keyword'] = !empty($keyword) ? $keyword : $site['keywords'];
	$seo['description'] = isset($description) && !empty($description) ? $description : (isset($cat['setting']['meta_description']) && !empty($cat['setting']['meta_description']) ? $cat['setting']['meta_description'] : (isset($site['description']) && !empty($site['description']) ? $site['description'] : ''));
	$seo['title'] =  (isset($title) && !empty($title) ? $title.' - ' : '').(isset($cat['setting']['meta_title']) && !empty($cat['setting']['meta_title']) ? $cat['setting']['meta_title'].' - ' : (isset($cat['catname']) && !empty($cat['catname']) ? $cat['catname'].' - ' : ''));
	foreach ($seo as $k=>$v) {
		$seo[$k] = str_replace(array("\n","\r"),	'', $v);
	}
	return $seo;
}

/**
 * 获取站点的信息
 * @param $siteid   站点ID
 */
function siteinfo($siteid) {
	static $sitelist;
	if (empty($sitelist)) $sitelist  = getcache('sitelist','commons');
	return isset($sitelist[$siteid]) ? $sitelist[$siteid] : '';
}

/**
 * 生成CNZZ统计代码
 */

function tjcode() {
	if(!module_exists('cnzz')) return false;
	$config = getcache('cnzz', 'commons');
	if (empty($config)) {
		return false;
	} else {
		return '<script src=\'http://pw.cnzz.com/c.php?id='.$config['siteid'].'&l=2\' language=\'JavaScript\' charset=\'gb2312\'></script>';
	}
}

/**
 * 生成标题样式
 * @par…