note 68791 deleted from ref.array by felipe

Note Submitter: Nicolai Bloch 

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Here are two functions for checking if an array contains numeric or string indexes only.
Hope someone else will find them useful.

<?php
//Check for numeric array
function isNumeric($ar) {
  $keys = array_keys($ar);
  natsort($keys); //String keys will be last
  return is_int(array_pop($keys));
}

//Check for associative array
function isAssoc($ar) {
  $keys = array_keys($ar);
  natsort($keys); //Numeric keys will be first
  return is_string(array_shift($keys));
}
?>