Bug #65570 [NEW]: 0 equals any string

From: l dot werner at sprengnetter dot de Operating system: Linux PHP version: 5.5.3 Package: *General Issues Bug Type: Bug Bug description:0 equals any string Description: ------------ When matching any string against 0 with == or != PHP will say they match. This is in my eyes absolutely wrong because testing against other types will not result in this behavior. Test script: --------------- <?php echo "null != 'string' -> "; var_dump(null != 'string'); echo "<br />"; echo "false != 'string' -> "; var_dump(false != 'string'); echo "<br />"; echo "0 != 'string' -> "; var_dump(0 != 'string'); echo "<br />"; echo "1 != 'string' -> "; var_dump(1 != 'string'); Expected result: ---------------- null != 'string' -> bool(true) false != 'string' -> bool(true) 0 != 'string' -> bool(true) 1 != 'string' -> bool(true) Actual result: -------------- null != 'string' -> bool(true) false != 'string' -> bool(true) 0 != 'string' -> bool(false) 1 != 'string' -> bool(true) -- Edit bug report at https://bugs.php.net/bug.php?id=65570&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=65570&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=65570&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=65570&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=65570&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=65570&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=65570&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=65570&r=needscript Try newer version: https://bugs.php.net/fix.php?id=65570&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=65570&r=support Expected behavior: https://bugs.php.net/fix.php?id=65570&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=65570&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=65570&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=65570&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=65570&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=65570&r=dst IIS Stability: https://bugs.php.net/fix.php?id=65570&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=65570&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=65570&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=65570&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=65570&r=mysqlcfg