note 114682 added to language.operators.comparison

Be careful with the "==" operator when both operands are strings: <?php var_dump('123' == ' 123'); // true var_dump('1e3' == '1000'); // true var_dump('+74951112233' == '74951112233'); // true var_dump('00000020' == '0000000000000000020'); // true var_dump('0X1D' == '29E0'); // true var_dump('0xafebac' == '11529132'); // true var_dump('0xafebac' == '0XAFEBAC'); // true var_dump('0xeb' == '+235e-0'); // true var_dump('0.235' == '+.235'); // true var_dump('0.2e-10' == '2.0E-11'); // true var_dump('61529519452809720693702583126814' == '61529519452809720000000000000000'); // true in php < 5.4.4 ---- Server IP: 72.52.91.14 Probable Submitter: 188.123.237.20 ---- Manual Page -- http://php.net/manual/en/language.operators.comparison.php Edit -- https://master.php.net/note/edit/114682 Del: integrated -- https://master.php.net/note/delete/114682/integrated Del: useless -- https://master.php.net/note/delete/114682/useless Del: bad code -- https://master.php.net/note/delete/114682/bad+code Del: spam -- https://master.php.net/note/delete/114682/spam Del: non-english -- https://master.php.net/note/delete/114682/non-english Del: in docs -- https://master.php.net/note/delete/114682/in+docs Del: other reasons-- https://master.php.net/note/delete/114682 Reject -- https://master.php.net/note/reject/114682 Search -- https://master.php.net/manage/user-notes.php