note 116961 added to filter.filters.validate

Often I see some code like the following: $value = "12"; if( filter_var($value, FILTER_VALIDATE_INT) ) { // validated as an int } The above works as intended, except when $value is "0". In the above case it will be interpreted as FALSE. For the correct behavior, you have not only to check if it is equal (==) to false, but also identic (===) to FALSE: $value = " 0 "; if( filter_var($value, FILTER_VALIDATE_INT) === FALSE ) { // validated as an int } I hope, I could help. ---- Server IP: 72.52.91.14 Probable Submitter: 84.187.77.92 ---- Manual Page -- http://php.net/manual/en/filter.filters.validate.php Edit -- https://master.php.net/note/edit/116961 Del: integrated -- https://master.php.net/note/delete/116961/integrated Del: useless -- https://master.php.net/note/delete/116961/useless Del: bad code -- https://master.php.net/note/delete/116961/bad+code Del: spam -- https://master.php.net/note/delete/116961/spam Del: non-english -- https://master.php.net/note/delete/116961/non-english Del: in docs -- https://master.php.net/note/delete/116961/in+docs Del: other reasons-- https://master.php.net/note/delete/116961 Reject -- https://master.php.net/note/reject/116961 Search -- https://master.php.net/manage/user-notes.php