PHP equivalent of Java's Character.getNumericValue(char c)?

Question

Is there a PHP equivalent of Java's Character.getNumericValue(char c)?

Answer 1

ord

Edit: Oops, that's not what getNumericValue does. I guess the answer is no then. You'll have to make up a table of your own that maps numeric characters to numbers.

If you want a function that works with the most common numeric characters, you could do something like this, but it would fail for special Unicode numerals:

function getNumericValue($ch) {
  if (ctype_digit($ch))
    return ord($ch) - ord('0');
  if (ctype_upper($ch))
    return ord($ch) - ord('A') + 10;
  if (ctype_lower($ch))
    return ord($ch) - ord('a') + 10;
  return -1;
}

Answer 2

Is this what you want?

http://us.php.net/ord

Answer 3

Use the intval() function.

This will not handle letters or roman numerals the same way, but you could create your own method to do that for those cases. It will handle standard digits, though.

if (intval("2") === 2)
  echo("YAY!");

Answer 4

No. There are no baked in equivalents.