1 <?php

     2 /**

     3  * Smarty plugin

     4  *

     5  * @package    Smarty

     6  * @subpackage PluginsModifier

     7  */

     8 

     9 /**

    10  * Smarty regex_replace modifier plugin

    11  * Type:     modifier<br>

    12  * Name:     regex_replace<br>

    13  * Purpose:  regular expression search/replace

    14  *

    15  * @link    http://smarty.php.net/manual/en/language.modifier.regex.replace.php

    16  *          regex_replace (Smarty online manual)

    17  * @author  Monte Ohrt <monte at ohrt dot com>

    18  *

    19  * @param string $string input string

    20  * @param string|array $search regular expression(s) to search for

    21  * @param string|array $replace string(s) that should be replaced

    22  *

    23  * @return string

    24  */

    25 function smarty_modifier_regex_replace($string, $search, $replace) {

    26     if (is_array($search)) {

    27         foreach ($search as $idx => $s) {

    28             $search[$idx] = _smarty_regex_replace_check($s);

    29         }

    30     } else {

    31         $search = _smarty_regex_replace_check($search);

    32     }

    33 

    34     return preg_replace($search, $replace, $string);

    35 }

    36 

    37 /**

    38  * @param  string $search string(s) that should be replaced

    39  *

    40  * @return string

    41  * @ignore

    42  */

    43 function _smarty_regex_replace_check($search) {

    44     // null-byte injection detection

    45     // anything behind the first null-byte is ignored

    46     if (($pos = strpos($search, "\0")) !== false) {

    47         $search = substr($search, 0, $pos);

    48     }

    49     // remove eval-modifier from $search

    50     if (preg_match('!([a-zA-Z\s]+)$!s', $search, $match) && (strpos($match[1], 'e') !== false)) {

    51         $search = substr($search, 0, -strlen($match[1])) . preg_replace('![e\s]+!', '', $match[1]);

    52     }

    53 

    54     return $search;

    55 }