>>371
<?php
function hoge($a, $b) {
list (,,,$aa,) = explode("<>", $a);
list (,,,$bb,) = explode("<>", $b);
return ($bb - $aa);
}
$list[] = "aa<>bb<>cc<>5<>6";
$list[] = "dd<>ee<>ff<>3<>8";
$list[] = "gg<>hh<>ii<>10<>1";
echo "<pre>\n";
print_r($list);
echo "\n";
usort($list, "hoge");
print_r($list);
echo "</pre>";
?>