Bug->Req #66211 [Opn->Nab]: integer/string comparisons have bad type-casting

Edit report at https://bugs.php.net/bug.php?id=66211&edit=1 ID: 66211 Updated by: yohgaki@php.net Reported by: php at charles-chandler dot org Summary: integer/string comparisons have bad type-casting -Status: Open +Status: Not a bug -Type: Bug +Type: Feature/Change Request Package: Variables related Operating System: Mac OSX PHP Version: 5.4.22 Block user comment: N Private report: N New Comment: PHP converts "integer like string to integer" and PHP is designed to do so. Use === or !== for stricter comparison. Added to wiki https://wiki.php.net/rfc/comparison_inconsistency?&#conversioncomparison Previous Comments: ------------------------------------------------------------------------ [2013-12-01 02:14:51] php at charles-chandler dot org Description: ------------ --- From manual page: http://www.php.net/types.comparisons --- 2 == '2b' I understand why, in a loosely typed language, 2 == '2', but it doesn't make sense for an integer to be equal-equal to a string that simply begins with an integer, such as 2 == '2b', so this looks like a bug to me. Rather than casting the string to an integer (i.e., intval('2b') == 2), the integer should cast to a string for the comparison (i.e., strval(2) != '2b'). Tested in PHP 5.2.5 and 5.3.13. Test script: --------------- <?php // this is the problem, which we'd expect // to return false, but which returns true: echo (2 == '2b').'<br />'; // this is probably what's happening: echo (2 == intval('2b')).'<br />'; // this is what probably should happen: echo (strval(2) != '2b').'<br />'; ?> ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=66211&edit=1