(PHP 4, PHP 5)
ord — Return ASCII value of character
$string
   )
   Returns the ASCII value of the first character of
   string.
  
This function complements chr().
stringA character.
Returns the ASCII value as an integer.
Example #1 ord() example
<?php
$str = "\n";
if (ord($str) == 10) {
    echo "The first character of \$str is a line feed.\n";
}
?>