(PHP 3, PHP 4 >= 4.0.0)
Returns the ASCII value of the first character of string. This function complements chr().
Example 1. ord() example
if (ord($str) == 10) { echo "The first character of \$str is a line feed.\n"; }
You can find an ASCII-table over here: http://www.mindspring.com/~jc1/serial/Resources/ASCII.html.
See also chr().