Re: the usort 's puzzle

..oO(youngord@xxxxxxxxx)

<?php
$mix=array(
array("A",10),
array("B",5),
array("C",100)
);
function com($x,$y){
echo $x[0];
}
usort($mix,'com');


?>

i think the $x[0] result is A,
but the final $x[0] result is BC.
why???

What are you trying to do? The above doesn't really makes sense.
The result depends on what sorting algorithm PHP uses internally.

Micha
.