note 76746 added to function.count-chars

This function is great for input validation. I frequently need to check that all characters in a string are 7-bit ASCII (and not null). This is the fastest function I have found yet: <?php function is7bit($string) { // empty strings are 7-bit clean if (!strlen($string)) { return true; } // count_chars returns the characters in ascending octet order $str = count_chars($str, 3); // Check for null character if (!ord($str[0])) { return false; } // Check for 8-bit character if (ord($str[strlen($str)-1]) & 128) { return false; } return true; } ?> ---- Server IP: 66.207.199.35 Probable Submitter: 206.248.138.140 ---- Manual Page -- http://www.php.net/manual/en/function.count-chars.php Edit -- https://master.php.net/note/edit/76746 Del: integrated -- https://master.php.net/note/delete/76746/integrated Del: useless -- https://master.php.net/note/delete/76746/useless Del: bad code -- https://master.php.net/note/delete/76746/bad+code Del: spam -- https://master.php.net/note/delete/76746/spam Del: non-english -- https://master.php.net/note/delete/76746/non-english Del: in docs -- https://master.php.net/note/delete/76746/in+docs Del: other reasons-- https://master.php.net/note/delete/76746 Reject -- https://master.php.net/note/reject/76746 Search -- https://master.php.net/manage/user-notes.php