<?php if (!defined('BASEPATH')) exit('No direct script access allowed'); /** * Code Igniter * * An open source application development framework for PHP 4.3.2 or newer * * @package CodeIgniter * @author Rick Ellis * @copyright Copyright (c) 2006, pMachine, Inc. * @license http://www.codeignitor.com/user_guide/license.html * @link http://www.codeigniter.com * @since Version 1.0 * @filesource */ // ------------------------------------------------------------------------ /** * Code Igniter String Helpers * * @package CodeIgniter * @subpackage Helpers * @category Helpers * @author Rick Ellis * @link http://www.codeigniter.com/user_guide/helpers/string_helper.html */ // ------------------------------------------------------------------------ /** * Trim Slashes * * Removes any leading/traling slashes from a string: * * /this/that/theother/ * * becomes: * * this/that/theother * * @access public * @param string * @return string */ function trim_slashes($str) { return preg_replace("|^/*(.+?)/*$|", "\\1", $str); } // ------------------------------------------------------------------------ /** * Reduce Double Slashes * * Converts double slashes in a string to a single slash, * except those found in http:// * * http://www.some-site.com//index.php * * becomes: * * http://www.some-site.com/index.php * * @access public * @param string * @return string */ function reduce_double_slashes($str) { return preg_replace("#([^:])//+#", "\\1/", $str); } // ------------------------------------------------------------------------ /** * Create a Random String * * Useful for generating passwords or hashes. * * @access public * @param string type of random string. Options: alunum, numeric, nozero, unique * @param integer number of characters * @return string */ function random_string($type = 'alnum', $len = 8) { switch($type) { case 'alnum' : case 'numeric' : case 'nozero' : switch ($type) { 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' : return md5(uniqid(mt_rand())); break; } } // ------------------------------------------------------------------------ /** * Alternator * * Allows strings to be alternated. See docs... * * @access public * @param string (as many parameters as needed) * @return string */ function alternator() { static $i; if (func_num_args() == 0) { $i = 0; return ''; } $args = func_get_args(); return $args[($i++ % count($args))]; } // ------------------------------------------------------------------------ /** * Repeater function * * @access public * @param string * @param integer number of repeats * @return string */ function repeater($data, $num = 1) { return str_repeat($data, $num); } ?>