Bug #72087 [Opn->Nab]: case $var !== 0 return wrong answer (only with 0)

Edit report at https://bugs.php.net/bug.php?id=72087&edit=1 ID: 72087 Updated by: requinix@php.net Reported by: sklogika2 at gmail dot com Summary: case $var !== 0 return wrong answer (only with 0) -Status: Open +Status: Not a bug Type: Bug Package: *Programming Data Structures Operating System: Centos7 PHP Version: 5.6.20 Block user comment: N Private report: N New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php "switch ($x) case $y" is the same as writing "if ($x == $y)". What you've written there is "if ($userId == ($userId !== 0))". You should use switch ($userId) { case 0: echo "zero"; break;; default: echo "not zero"; break; } Previous Comments: ------------------------------------------------------------------------ [2016-04-23 16:46:26] sklogika2 at gmail dot com I'm sorry instead of case 'userIdKOZqAfk': should be default: But idea is about !=0 ------------------------------------------------------------------------ [2016-04-23 16:44:00] sklogika2 at gmail dot com Description: ------------ In the code below I get result of "not zero" when I should get "zero" Such case comparisons do not work properly only with 0, with other numbers it is ok Test script: --------------- $userId = 0; switch ($userId) { case $userId !== 0: echo "not zero"; break; case 'userIdKOZqAfk': echo "zero"; break; } Expected result: ---------------- zero Actual result: -------------- not zero ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=72087&edit=1