Bug #77928 [Nab]: echo ('string'==0)?"TRUE":"FALSE"; // TRUE

Edit report at https://bugs.php.net/bug.php?id=77928&edit=1 ID: 77928 User updated by: shamil dot kur at gmail dot com Reported by: shamil dot kur at gmail dot com Summary: echo ('string'==0)?"TRUE":"FALSE"; // TRUE Status: Not a bug Type: Bug Package: *General Issues Operating System: Debian PHP Version: 7.3.4 Block user comment: N Private report: N New Comment: Or do you want to say that when comparing with int, any string == 0? If so, then the question is closed. But "8"==8, "0"==0, "7"==7, "7"!=8 but "7"==0 Previous Comments: ------------------------------------------------------------------------ [2019-04-21 06:23:44] shamil dot kur at gmail dot com If decided that this is not an error. That does not equate \0 to any string. Let it always be not equal. Because, it is ambiguity. Is this logical? <?php if("any string"==0)echo "this\n"; if("\0"==0)echo "and this\n"; //Result: this end this ------------------------------------------------------------------------ [2019-04-21 06:14:33] shamil dot kur at gmail dot com // You are joking? // It violates the laws of logic. $a=0; $b='string 1'; $с='string 2'; if(($a==$b) && ($a==$c))echo "\$b==\$c"; // But $b don't eq $c. if($b!=$c)echo "\$b!=\$c"; ------------------------------------------------------------------------ [2019-04-20 18:53:02] requinix@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 ------------------------------------------------------------------------ [2019-04-20 18:22:33] spam2 at rhsoft dot net Expected: echo ('string'==0)?"TRUE":"FALSE"; // FALSE - OK fix your expectations! 'string'==0 evaluates to TRUE php > echo ('string'==0); 1 php > echo ('string'===0); php > that's how PHP works all the time https://www.php.net/manual/en/language.types.type-juggling.php ------------------------------------------------------------------------ [2019-04-20 17:59:36] shamil dot kur at gmail dot com Description: ------------ Expected: echo ('string'==0)?"TRUE":"FALSE"; // FALSE - OK echo (''==0)?"TRUE":"FALSE"; // TRUE - OK echo ('string'==1)?"TRUE":"FALSE"; // TRUE - OK echo (''==1)?"TRUE":"FALSE"; // FALSE - OK The actual result: PHP 7.3.4 echo ('string'==0)?"TRUE":"FALSE"; // TRUE - it's ERROR echo (''==0)?"TRUE":"FALSE"; // TRUE - OK echo ('string'==1)?"TRUE":"FALSE"; // FALSE - it's ERROR echo (''==1)?"TRUE":"FALSE"; // FALSE - OK Test script: --------------- if(''==0)echo "printed text 0\n"; //this line printed if('string'==0)echo "printed text 1\n"; //this line printed // ERROR if(''==1)echo "printed text 2\n"; //never printed if('string'==1)echo "printed text 3\n"; //never printed // ERROR Expected: printed text 0 printed text 3 The actual result: printed text 0 printed text 1 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77928&edit=1