Bug #64049 [Nab]: problem with in_array when mixing string and integer results

Edit report at https://bugs.php.net/bug.php?id=64049&edit=1 ID: 64049 User updated by: mrmateopers at gmail dot com Reported by: mrmateopers at gmail dot com Summary: problem with in_array when mixing string and integer results Status: Not a bug Type: Bug Package: hash related Operating System: Debian, Ubuntu, Windows 7 PHP Version: 5.5.0alpha2 Block user comment: N Private report: N New Comment: You're right Laurence. I was obfuscated. It is because the loose comparison on string == 0 returns TRUE. Even, I strongly suggest to update the documentation (in top of in_array) in order to remark it. Thanks. Best Previous Comments: ------------------------------------------------------------------------ [2013-01-23 03:35:56] laruence@php.net Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php in_array does loose comparison, maybe you need to use the third argument of it. http://us1.php.net/manual/en/function.in-array.php ------------------------------------------------------------------------ [2013-01-22 18:23:47] mrmateopers at gmail dot com Description: ------------ It affects all versions from 5.3 to 5.5.0.a.2. Problems is when using in_array in array that mixes integer and numeric values AND has alphanumeric keys f.e. 'name' in loose mode. Results are crazy and unpredictable. Works fine when using numeric index. When using in_array with strict work fine, but not here: // Create an array like: $st_array = array( 'name1' => 0, 'name2' => 1, 'name3' => '2', 'name4' => 'Catalunya Lliure'); // Then look with in_array and be surprised echo 'Case 0:'.in_array('0', $st_array)."\n"; echo 'Case 1:'.in_array('1', $st_array)."\n"; echo 'Case 2:'.in_array('2', $st_array)."\n"; echo 'Case n:'.in_array('n', $st_array)."\n"; echo 'Case z:'.in_array('z', $st_array)."\n"; echo 'Case Catalunya:'.in_array('Catalunya', $st_array)."\n"; echo 'Case num no:'.in_array(3, $st_array)."\n"; echo 'Case num yes:'.in_array(1, $st_array)."\n"; // More in deep in the next box Test script: --------------- <?php $st_array = array( 'name1' => 0, 'name2' => 1, 'name3' => '2', 'name4' => 'Catalunya Lliure'); echo 'Case 0:'.in_array('0', $st_array)."\n"; echo 'Case 1:'.in_array('1', $st_array)."\n"; echo 'Case 2:'.in_array('2', $st_array)."\n"; echo 'Case n:'.in_array('n', $st_array)."\n"; echo 'Case z:'.in_array('z', $st_array)."\n"; echo 'Case Catalunya:'.in_array('Catalunya', $st_array)."\n"; echo 'Case num no:'.in_array(3, $st_array)."\n"; echo 'Case num yes:'.in_array(1, $st_array)."\n"; // Please note the different case of 'Catalunya' working fine with // numeric auto index $st_array2 = array(2,'a','Catalunya Lliure'); echo 'Case 1a:'.in_array(3, $st_array2)."\n"; echo 'case 2a:'.in_array(2, $st_array2)."\n"; echo 'case 3a:'.in_array('2', $st_array2)."\n"; echo 'Case 4a:'.in_array('Catalunya', $st_array2)."\n"; echo 'Case 5a:'.in_array('Catalunya Lliure', $st_array2)."\n"; Expected result: ---------------- Expected: Case 0: 1 Case 1: 1 Case 2: 1 Case n: Case z: Case Catalunya: Case num no: Case num yes: 1 Case 1a: Case 2a: 1 Case 3a: 1 Case 4a: Case 5a: 1 Actual result: -------------- Cas 0:1 Cas 1:1 Cas 2:1 Cas n:1 Cas z:1 Cas Catalunya:1 Cas num no: Cas num sí:1 Cas 1a: cas 2a:1 cas 3a:1 Cas 4a: Cas 5a:1 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=64049&edit=1