diff options
| author | rxu <rxu@mail.ru> | 2011-01-05 21:13:33 +0700 |
|---|---|---|
| committer | Andreas Fischer <bantu@phpbb.com> | 2011-01-07 15:32:34 +0100 |
| commit | 951b7b22e002571f1c304fcd63049aae77551a7b (patch) | |
| tree | c50478fa8747c476705a211298a6cb05d9b1e198 /phpBB/includes/functions.php | |
| parent | 9a25e4ad8956f46fa41a6057a8af53f2955fb532 (diff) | |
| download | forums-951b7b22e002571f1c304fcd63049aae77551a7b.tar forums-951b7b22e002571f1c304fcd63049aae77551a7b.tar.gz forums-951b7b22e002571f1c304fcd63049aae77551a7b.tar.bz2 forums-951b7b22e002571f1c304fcd63049aae77551a7b.tar.xz forums-951b7b22e002571f1c304fcd63049aae77551a7b.zip | |
[ticket/9933] Move word censor regex into separate function in functions.php
PHPBB3-9933
Diffstat (limited to 'phpBB/includes/functions.php')
| -rw-r--r-- | phpBB/includes/functions.php | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php index c7f19b709d..69be1627cf 100644 --- a/phpBB/includes/functions.php +++ b/phpBB/includes/functions.php @@ -3429,6 +3429,48 @@ function get_preg_expression($mode) } /** +* Generate regexp for naughty words censoring +* Depends on whether installed PHP version supports unicode properties +* +* @param string $word word template to be replaced +* +* @return string $preg_expr regex to use with word censor +*/ +function get_censor_preg_expression($word) +{ + static $unicode = null; + + if (empty($word)) + { + return ''; + } + + // Check whether PHP version supports unicode properties + if (is_null($unicode)) + { + $unicode = ((version_compare(PHP_VERSION, '5.1.0', '>=') || (version_compare(PHP_VERSION, '5.0.0-dev', '<=') && version_compare(PHP_VERSION, '4.4.0', '>='))) && @preg_match('/\p{L}/u', 'a') !== false) ? true : false; + } + + if ($unicode) + { + // Unescape the asterisk to simplify further conversions + $word = str_replace('\*', '*', preg_quote($word, '#')); + + // Replace asterisk(s) inside the pattern, at the start and at the end of it with regexes + $word = preg_replace(array('#(?<=[\p{Nd}\p{L}_])\*+(?=[\p{Nd}\p{L}_])#iu', '#^\*+#', '#\*+$#'), array('([\x20]*?|[\p{Nd}\p{L}_-]*?)', '[\p{Nd}\p{L}_-]*?', '[\p{Nd}\p{L}_-]*?'), $word); + + // Generate the final substitution + $preg_expr = '#(?<![\p{Nd}\p{L}_-])(' . $word . ')(?![\p{Nd}\p{L}_-])#iu'; + } + else + { + $preg_expr = '#(?<!\S)(' . str_replace('\*', '\S*?', preg_quote($word, '#')) . ')(?!\S)#iu'; + } + + return $preg_expr; +} + +/** * Returns the first block of the specified IPv6 address and as many additional * ones as specified in the length paramater. * If length is zero, then an empty string is returned. |