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Diffstat (limited to 'system/helpers/string_helper.php')
| -rw-r--r-- | system/helpers/string_helper.php | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/system/helpers/string_helper.php b/system/helpers/string_helper.php new file mode 100644 index 000000000..3f7f09a15 --- /dev/null +++ b/system/helpers/string_helper.php @@ -0,0 +1,273 @@ +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +/** + * CodeIgniter + * + * An open source application development framework for PHP 4.3.2 or newer + * + * @package CodeIgniter + * @author ExpressionEngine Dev Team + * @copyright Copyright (c) 2008 - 2009, 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/traling 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 $str; + } +} + +// ------------------------------------------------------------------------ + +/** + * Create a Random String + * + * Useful for generating passwords or hashes. + * + * @access public + * @param string type of random string. Options: alunum, numeric, nozero, unique + * @param integer number of characters + * @return string + */ +if ( ! function_exists('random_string')) +{ + function random_string($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 + */ +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 */
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