一个简单的PHP中多维数组的排序

$a =array(100,80,50,10,0);
$b = array("c","f","q","e","z");
array_multisort($a,$b);
var_dump($a);
var_dump($b);
?>

array(5) { [0]=> int(0) [1]=> int(10) [2]=> int(50) [3]=> int(80) [4]=> int(100) }
array(5) { [0]=> string(1) “z” [1]=> string(1) “e” [2]=> string(1) “q” [3]=> string(1) “f” [4]=> string(1) “c” }

$arr = array(

'index'=>array( 'name'=>'首页','order'=>3),

'intro'=>array( 'name'=>'企业概况','order'=>2),

'news'=>array( 'name'=>'新闻动态','order'=>1 ),

'product'=>array( 'name'=>'产品中心','order'=>4 ),

'message'=>array( 'name'=>'访客留言','order'=>7 ),

'position'=>array( 'name'=>'人才招聘','order'=>6),

'contact'=>array( 'name'=>'联系我们','order'=> 5 )

);

uasort($arr, 'cmp');

public function cmp($a, $b){

return $a['order'] - $b['order'];

}