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1: <?php
2: /**
3: * Smarty plugin
4: *
5: * @package Smarty
6: * @subpackage PluginsModifier
7: */
8: /**
9: * Smarty regex_replace modifier plugin
10: * Type: modifier
11: * Name: regex_replace
12: * Purpose: regular expression search/replace
13: *
14: * @link http://smarty.php.net/manual/en/language.modifier.regex.replace.php
15: * regex_replace (Smarty online manual)
16: * @author Monte Ohrt <monte at ohrt dot com>
17: *
18: * @param string $string input string
19: * @param string|array $search regular expression(s) to search for
20: * @param string|array $replace string(s) that should be replaced
21: * @param int $limit the maximum number of replacements
22: *
23: * @return string
24: */
25: function smarty_modifier_regex_replace($string, $search, $replace, $limit = -1)
26: {
27: if (is_array($search)) {
28: foreach ($search as $idx => $s) {
29: $search[ $idx ] = _smarty_regex_replace_check($s);
30: }
31: } else {
32: $search = _smarty_regex_replace_check($search);
33: }
34: return preg_replace($search, $replace, $string, $limit);
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: {
45: // null-byte injection detection
46: // anything behind the first null-byte is ignored
47: if (($pos = strpos($search, "\0")) !== false) {
48: $search = substr($search, 0, $pos);
49: }
50: // remove eval-modifier from $search
51: if (preg_match('!([a-zA-Z\s]+)$!s', $search, $match) && (strpos($match[ 1 ], 'e') !== false)) {
52: $search = substr($search, 0, -strlen($match[ 1 ])) . preg_replace('![e\s]+!', '', $match[ 1 ]);
53: }
54: return $search;
55: }
56:
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