Question

I was wondering how I could overload a standard function in php. Specifically, I’m trying to implement security checks on certain functions. As such, I would like to redefine write as:

function fwrite($handle, $string, $length = null) {
  if (doMyChecks()) {
    original_fWrite($handle, $string, $length);
  } else {
    recordViolation();
  }
}

I’m using CodeIgniter, so I would put this code in index.php to make it applicable for all pages called through the framework.

Answer 1

It seems that you could use the PHP function override_function(). From the PHP.net site:

override_function('test', '$a,$b', 'echo "DOING TEST"; return $a * $b;');