Similar to above but for an array of arrays instead of an array of objects.

<?php
function aasort($x,$var,$cmp='strcasecmp'){
  if ( is_string($var) ) $var = "'$var'";
  uasort($x,
    create_function('$a,$b',
      'return '.$cmp.'( $a['.$var.'],$b['.$var.']);')
  );
  return $x;
}
?>