<?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 - 2011, 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; } } } // ------------------------------------------------------------------------ /** * 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 */