#46640 [NEW]: A bug then using equality operator ("==") to compare arrays

From: realbaziak at gmail dot com Operating system: Gentoo Linux PHP version: 5.2.6 PHP Bug Type: Arrays related Bug description: A bug then using equality operator ("==") to compare arrays Description: ------------ Equality operator returns true, though arrays are different. Is it a bug or feature? :) Thanks. Reproduce code: --------------- $a = array(0 => "something"); $b1 = array(0 => "another"); $b2 = array(0 => "0"); $b3 = array(0 => null); $b4 = array(0 => 0); $a2 = array(0 => "two", 1 => "elements"); $b5 = array(0 => 0, 1 => 0); var_dump($a == $b1); // bool(false) var_dump($a == $b2); // bool(false) var_dump($a == $b3); // bool(false) var_dump($a == $b4); // bool(true) -- why array(0 => "something") // equals to array(0 => 0)? var_dump($a2 == $b5); // bool(true) -- it seems there are some regularity Expected result: ---------------- always bool(false) Actual result: -------------- bool(true) on something like array(0 => "one", 1 => "two") == array(0 => 0, 1 => 0) -- Edit bug report at http://bugs.php.net/?id=46640&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=46640&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=46640&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=46640&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=46640&r=fixedcvs Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=46640&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=46640&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=46640&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=46640&r=needscript Try newer version: http://bugs.php.net/fix.php?id=46640&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=46640&r=support Expected behavior: http://bugs.php.net/fix.php?id=46640&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=46640&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=46640&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=46640&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46640&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=46640&r=dst IIS Stability: http://bugs.php.net/fix.php?id=46640&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=46640&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=46640&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=46640&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=46640&r=mysqlcfg