数组中的元素可以按字母或数字顺序进行降序或升序排列。
<?php
$cars=array("Volvo","BMW","Toyota");
sort($cars);
?>
下面的实例将 $numbers 数组中的元素按照数字升序排列:
<?php
$numbers=array(4,6,2,22,11);
sort($numbers);
?>
<?php
$cars=array("Volvo","BMW","Toyota");
rsort($cars);
?>
下面的实例将 $numbers 数组中的元素按照数字降序排列:
<?php
$numbers=array(4,6,2,22,11);
rsort($numbers);
?>
<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
asort($age);
?>
<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
ksort($age);
?>
<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
arsort($age);
?>
<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
krsort($age);
?>