Bug #63599 [Opn->Spm]: Operators : == is useless

Edit report at https://bugs.php.net/bug.php?id=63599&edit=1 ID: 63599 Updated by: rasmus@php.net Reported by: michel dot lecorsier at orange dot fr Summary: Operators : == is useless -Status: Open +Status: Spam Type: Bug Package: *Programming Data Structures Operating System: Ubuntu PHP Version: 5.4.9 Block user comment: N Private report: N Previous Comments: ------------------------------------------------------------------------ [2012-11-25 17:20:38] michel dot lecorsier at orange dot fr Description: ------------ == is useless. It’s not transitive. "foo" == TRUE, and "foo" == 0… but, of course, TRUE != 0. == converts to numbers when possible (123 == "123foo"… although "123" != "123foo"), which means it converts to floats when possible. So large hex strings (like, say, password hashes) may occasionally compare true when they’re not. Even JavaScript doesn’t do this. For the same reason, "6" == " 6", "4.2" == "4.20", and "133" == "0133". But note that 133 != 0133, because 0133 is octal. But "0x10" == "16" and "1e3" == "1000"! === compares values and type… except with objects, where === is only true if both operands are actually the same object! For objects, == compares both value (of every attribute) and type, which is what === does for every other type. What. Test script: --------------- <?php $toto = "Foo"; if ($toto == "foo") { echo 'yes'; exit; } else { echo 'fail'; exit; } ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=63599&edit=1