変数 = sort(配列)

降順に並び換えられた配列

<?php

$abc = array("b","d","e","a","c");

$a = sort($abc);

print_r($abc);

?>

Array ( [0] => a [1] => b [2] => c [3] => d [4] => e )

//バラバラに並んでいたのが順番になっています。

<?php

$aiu = array("う","お","い","え","あ");

$a = sort($aiu);

print_r($aiu);

?>

Array ( [0] => あ [1] => い [2] => う [3] => え [4] => お )