#42329 [NEW]: preg_replace returns null

From: grok at no-log dot org Operating system: Linux PHP version: 5.2.3 PHP Bug Type: PCRE related Bug description: preg_replace returns null Description: ------------ preg_replace returns null instead of a string. The input is an html file I was parsing. The bug disapears when I change the file in many ways. I managed to reduce the html file's size a bit, but it is still too long to paste hear, and the posting might remove caracters that might be involved in the bug. I put the html file here: http://marcel.demosphere.fr/php-preg-bug.txt Reproduce code: --------------- var_dump(preg_replace('@^.*</head>@s','',file_get_contents("bug"))); Expected result: ---------------- preg_replace should return a string with all of the input. Actual result: -------------- preg_replace returns null -- Edit bug report at http://bugs.php.net/?id=42329&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=42329&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=42329&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=42329&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=42329&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=42329&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=42329&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=42329&r=needscript Try newer version: http://bugs.php.net/fix.php?id=42329&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=42329&r=support Expected behavior: http://bugs.php.net/fix.php?id=42329&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=42329&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=42329&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=42329&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=42329&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=42329&r=dst IIS Stability: http://bugs.php.net/fix.php?id=42329&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=42329&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=42329&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=42329&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=42329&r=mysqlcfg