array_unique()与array_flip()

<?php


   	 $number = array(1,2,3,4,5,9,6,3,2,1,4,5,8,7,0,2,1);
    print_r($number)."<br/>";
   	 $a = array_unique($number);       //array_unique 删除数组中重复的元素
    print_r($a)."<br/>";

    $name = array("赵云"=>"31","关羽"=>"33","刘备"=>"35","张						飞"=>"32",);
    $newname = array_flip($name);
print_r($newname);         //   array_flip — 交换数组中的键和值
echo $newname[33];

?>