diff options
| -rw-r--r-- | lib/util.php | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/util.php b/lib/util.php index 35fcfdb09..c05fcf15a 100644 --- a/lib/util.php +++ b/lib/util.php @@ -919,7 +919,12 @@ function common_shorten_links($text, $always = false) function common_validate_utf8($str) { // preg_replace will return NULL on invalid UTF-8 input. - return preg_replace('//u', '', $str); + // + // Note: empty regex //u also caused NULL return on some + // production machines, but none of our test machines. + // + // This should be replaced with a more reliable check. + return preg_replace('/\x00/u', '', $str); } /** |