From: Operating system: Ubuntu PHP version: 5.3.9 Package: Regexps related Bug Type: Bug Bug description:preg_match + operator fails with string exceeding length 18
Description: ------------ I'm trying to validate email addresses via regular expression. My regular expression fails if the first domain portion is longer than 18 characters. Overall string length does not seem relevant. Decreasing the length of the user portion or TLD does not make a 19+ character domain portion work. Test script: --------------- function is_email($str){ if(preg_match("/^[_a-z0-9-]+(.[_a-z0-9-]+)*@[a-z0-9-]+(.[a-z0-9-]+)*(.[a-z]{2,4})$/i", $str)) return True; return False; } var_dump(is_email("u...@123456789012345678.com")); var_dump(is_email("u...@1234567890123456789.com")); Expected result: ---------------- bool(true); bool(true); Actual result: -------------- bool(true); bool(false); -- Edit bug report at https://bugs.php.net/bug.php?id=60903&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=60903&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=60903&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=60903&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=60903&r=fixed Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=60903&r=needdocs Fixed in release: https://bugs.php.net/fix.php?id=60903&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=60903&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=60903&r=needscript Try newer version: https://bugs.php.net/fix.php?id=60903&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=60903&r=support Expected behavior: https://bugs.php.net/fix.php?id=60903&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=60903&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=60903&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=60903&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=60903&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=60903&r=dst IIS Stability: https://bugs.php.net/fix.php?id=60903&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=60903&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=60903&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=60903&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=60903&r=mysqlcfg