note 29405 added to function.intval

I don't think casting to (int) and back to (string) is correct: Casting "03" to int will produce 3 Casting 3 to string will produce "3" But "03" is not === "3". You should remove leading zeroes and plus and final dot and as in "+00004.e1" that is a legal int Also strtoupper() is not correct, because it will assume that ";,.#" is a number. Also things like if($var+1 != 1 || $var == "0") {...} will fail if $var is "0000" Maybe this will work (code is not tested): function is_intValued($var) { if(is_numeric($var)) { // It's a number so it's at least a float $var=(float)$var; return ((float)(int)$var)===$var; } return false; } -- http://www.php.net/manual/en/function.intval.php http://master.php.net/manage/user-notes.php?action=edit+29405 http://master.php.net/manage/user-notes.php?action=delete+29405 http://master.php.net/manage/user-notes.php?action=reject+29405