如何实现.php中的随机数组二维排序功能？

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php随机数组和二维排序.php 1, 'price'=> 50);$array[]=array('id'=> 2, 'price'=> 70);$array[]=array('id'=> 3, 'price'=> 30);?>

$a=array("red","green","blue","yellow","brown"); $random_keys=array_rand($a); echo $a[$random_keys]."
"; $array[] = array('id'=>1,'price'=>50); $array[] = array('id'=>2,'price'=>70); $array[] = array('id'=>3,'price'=>30); $array[] = array('id'=>4,'price'=>20); foreach ($array as $key=>$value){ $id[$key] = $value['id']; $price[$key] = $value['price']; } array_multisort($price,SORT_NUMERIC,SORT_ASC,$id,SORT_STRING,SORT_ASC,$array); echo '

'; print_r($array); echo '';