Bug #64376 [Nab]: Comparison does not return correct value

Edit report at https://bugs.php.net/bug.php?id=64376&edit=1 ID: 64376 Updated by: rasmus@php.net Reported by: ludko2 at gmail dot com Summary: Comparison does not return correct value Status: Not a bug Type: Bug Package: *Programming Data Structures Operating System: win7 64bit PHP Version: 5.4.12 Block user comment: N Private report: N New Comment: Yes, numeric strings are intinally treated as integers for array keys to avoid the confusion you would have if you had: [0=>1, '0'=>2] If you want to compare your array keys as strings, there are plenty of ways to do that. eg. (string)$key == "c" strcmp($key, "c") "$key" == "c" Previous Comments: ------------------------------------------------------------------------ [2013-03-07 20:32:03] ludko2 at gmail dot com I object.. I am not comparing the string to int! I am comparing an array key (that may be "0") to a string! If this is not a bug, than there is a bug, that array key is transformed to an int if it is a string! ------------------------------------------------------------------------ [2013-03-07 15:54:19] rasmus@php.net You are comparing a string to an int. Both sides are cast to int. (int)"b0123..." cast to an integer is 0. 0==0. Use === to force a strict comparison, or explicitly cast your operands to your desired type. ------------------------------------------------------------------------ [2013-03-07 12:08:45] ludko2 at gmail dot com Description: ------------ Comparison between string and zero and string returns true?!? var_dump("b0180e6574921b8b8de3c40bfd046571"==0); tested on 5.4.6 win 7 64bit Test script: --------------- $arr = array("0"=>"b"); var_dump($arr);//array(1) { [0]=> string(1) "b"} foreach($arr as $k=>$v){ var_dump($k == "c"); // returns true (FAIL) } var_dump("b"==0);//returns true (FAIL) var_dump("a"==1); // returns false (OK) Expected result: ---------------- var_dump("b"==0);// expecting false Actual result: -------------- var_dump("b"==0);// returning true ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=64376&edit=1