note 77718 added to function.ctype-digit

I use ctype_digit() function as a part of this IMEI validation function. <?php /** * Check the IMEI of a mobile phone * @param $imei IMEI to validate */ function is_IMEI_valid($imei){ if(!ctype_digit($imei)) return false; $len = strlen($imei); if($len != 15) return false; for($ii=1, $sum=0 ; $ii < $len ; $ii++){ if($ii % 2 == 0) $prod = 2; else $prod = 1; $num = $prod * $imei[$ii-1]; if($num > 9){ $numstr = strval($num); $sum += $numstr[0] + $numstr[1]; }else $sum += $num; } $sumlast = intval(10*(($sum/10)-floor($sum/10))); //The last digit of $sum $dif = (10-$sumlast); $diflast = intval(10*(($dif/10)-floor($dif/10))); //The last digit of $dif $CD = intval($imei[$len-1]); //check digit if($diflast == $CD) return true; return false; } ?> ---- Server IP: 80.64.47.13 Probable Submitter: 80.35.139.151 ---- Manual Page -- http://www.php.net/manual/en/function.ctype-digit.php Edit -- https://master.php.net/note/edit/77718 Del: integrated -- https://master.php.net/note/delete/77718/integrated Del: useless -- https://master.php.net/note/delete/77718/useless Del: bad code -- https://master.php.net/note/delete/77718/bad+code Del: spam -- https://master.php.net/note/delete/77718/spam Del: non-english -- https://master.php.net/note/delete/77718/non-english Del: in docs -- https://master.php.net/note/delete/77718/in+docs Del: other reasons-- https://master.php.net/note/delete/77718 Reject -- https://master.php.net/note/reject/77718 Search -- https://master.php.net/manage/user-notes.php