吴裕雄--天生自然 PHP开发学习：数组排序

<?php
$cars=array("Volvo","BMW","Toyota");
sort($cars);
print_r($cars);
?> 

<?php
$numbers=array(4,6,2,22,11);
sort($numbers);
print_r($numbers);
?> 

<?php
$cars=array("Volvo","BMW","Toyota");
rsort($cars);
print_r($cars);
?> 

<?php
$numbers=array(4,6,2,22,11);
rsort($numbers);
print_r($numbers);
?> 

<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
asort($age);
print_r($age);
?> 

<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
ksort($age);
print_r($age);
?> 

<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
arsort($age);
print_r($age);
?> 

<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
krsort($age);
print_r($age);
?>