/system/helpers/string_helper.php
PHP | 284 lines | 117 code | 32 blank | 135 comment | 17 complexity | b10db1f5e73392db43868cf0307d175e MD5 | raw file
- <?php if (!defined('BASEPATH')) exit('No direct script access allowed');
- /**
- * CodeIgniter
- *
- * An open source application development framework for PHP 5.1.6 or newer
- *
- * @package CodeIgniter
- * @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc.
- * @license http://codeigniter.com/user_guide/license.html
- * @link http://codeigniter.com
- * @since Version 1.0
- * @filesource
- */
- // ------------------------------------------------------------------------
- /**
- * CodeIgniter String Helpers
- *
- * @package CodeIgniter
- * @subpackage Helpers
- * @category Helpers
- * @author ExpressionEngine Dev Team
- * @link http://codeigniter.com/user_guide/helpers/string_helper.html
- */
- // ------------------------------------------------------------------------
- /**
- * Trim Slashes
- *
- * Removes any leading/trailing slashes from a string:
- *
- * /this/that/theother/
- *
- * becomes:
- *
- * this/that/theother
- *
- * @access public
- * @param string
- * @return string
- */
- if (!function_exists('trim_slashes')) {
- function trim_slashes($str) {
- return trim($str, '/');
- }
- }
- // ------------------------------------------------------------------------
- /**
- * Strip Slashes
- *
- * Removes slashes contained in a string or in an array
- *
- * @access public
- * @param mixed string or array
- * @return mixed string or array
- */
- if (!function_exists('strip_slashes')) {
- function strip_slashes($str) {
- if (is_array($str)) {
- foreach ($str as $key => $val) {
- $str[$key] = strip_slashes($val);
- }
- } else {
- $str = stripslashes($str);
- }
- return $str;
- }
- }
- // ------------------------------------------------------------------------
- /**
- * Strip Quotes
- *
- * Removes single and double quotes from a string
- *
- * @access public
- * @param string
- * @return string
- */
- if (!function_exists('strip_quotes')) {
- function strip_quotes($str) {
- return str_replace(array('"', "'"), '', $str);
- }
- }
- // ------------------------------------------------------------------------
- /**
- * Quotes to Entities
- *
- * Converts single and double quotes to entities
- *
- * @access public
- * @param string
- * @return string
- */
- if (!function_exists('quotes_to_entities')) {
- function quotes_to_entities($str) {
- return str_replace(array("\'", "\"", "'", '"'), array("'", """, "'", """), $str);
- }
- }
- // ------------------------------------------------------------------------
- /**
- * Reduce Double Slashes
- *
- * Converts double slashes in a string to a single slash,
- * except those found in http://
- *
- * http://www.some-site.com//index.php
- *
- * becomes:
- *
- * http://www.some-site.com/index.php
- *
- * @access public
- * @param string
- * @return string
- */
- if (!function_exists('reduce_double_slashes')) {
- function reduce_double_slashes($str) {
- return preg_replace("#(^|[^:])//+#", "\\1/", $str);
- }
- }
- // ------------------------------------------------------------------------
- /**
- * Reduce Multiples
- *
- * Reduces multiple instances of a particular character. Example:
- *
- * Fred, Bill,, Joe, Jimmy
- *
- * becomes:
- *
- * Fred, Bill, Joe, Jimmy
- *
- * @access public
- * @param string
- * @param string the character you wish to reduce
- * @param bool TRUE/FALSE - whether to trim the character from the beginning/end
- * @return string
- */
- if (!function_exists('reduce_multiples')) {
- function reduce_multiples($str, $character = ',', $trim = FALSE) {
- $str = preg_replace('#' . preg_quote($character, '#') . '{2,}#', $character, $str);
- if ($trim === TRUE) {
- $str = trim($str, $character);
- }
- return $str;
- }
- }
- // ------------------------------------------------------------------------
- /**
- * Create a Random String
- *
- * Useful for generating passwords or hashes.
- *
- * @access public
- * @param string type of random string. basic, alpha, alunum, numeric, nozero, unique, md5, encrypt and sha1
- * @param integer number of characters
- * @return string
- */
- if (!function_exists('random_string')) {
- function random_string($type = 'alnum', $len = 8) {
- switch ($type) {
- case 'basic' :
- return mt_rand();
- break;
- case 'alnum' :
- case 'numeric' :
- case 'nozero' :
- case 'alpha' :
- switch ($type) {
- case 'alpha' :
- $pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
- break;
- case 'alnum' :
- $pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
- break;
- case 'numeric' :
- $pool = '0123456789';
- break;
- case 'nozero' :
- $pool = '123456789';
- break;
- }
- $str = '';
- for ($i = 0; $i < $len; $i++) {
- $str .= substr($pool, mt_rand(0, strlen($pool) - 1), 1);
- }
- return $str;
- break;
- case 'unique' :
- case 'md5' :
- return md5(uniqid(mt_rand()));
- break;
- case 'encrypt' :
- case 'sha1' :
- $CI =& get_instance();
- $CI->load->helper('security');
- return do_hash(uniqid(mt_rand(), TRUE), 'sha1');
- break;
- }
- }
- }
- // ------------------------------------------------------------------------
- /**
- * Add's _1 to a string or increment the ending number to allow _2, _3, etc
- *
- * @param string $str required
- * @param string $separator What should the duplicate number be appended with
- * @param string $first Which number should be used for the first dupe increment
- * @return string
- */
- function increment_string($str, $separator = '_', $first = 1) {
- preg_match('/(.+)' . $separator . '([0-9]+)$/', $str, $match);
- return isset($match[2]) ? $match[1] . $separator . ($match[2] + 1) : $str . $separator . $first;
- }
- // ------------------------------------------------------------------------
- /**
- * Alternator
- *
- * Allows strings to be alternated. See docs...
- *
- * @access public
- * @param string (as many parameters as needed)
- * @return string
- */
- if (!function_exists('alternator')) {
- function alternator() {
- static $i;
- if (func_num_args() == 0) {
- $i = 0;
- return '';
- }
- $args = func_get_args();
- return $args[($i++ % count($args))];
- }
- }
- // ------------------------------------------------------------------------
- /**
- * Repeater function
- *
- * @access public
- * @param string
- * @param integer number of repeats
- * @return string
- */
- if (!function_exists('repeater')) {
- function repeater($data, $num = 1) {
- return (($num > 0) ? str_repeat($data, $num) : '');
- }
- }
- /* End of file string_helper.php */
- /* Location: ./system/helpers/string_helper.php */