数组去重 PHP

$input = array("a" => "green","", "red","b" => "green", "","blue", "red","c" => "witer","hello","witer");//假设一个数组print_r($input);echo "<br />";$result = array_unique($input); //去除其中值相同的元素print_r($result);echo "<br />";

输出是：

Array ( [a] => green [0] => [1] => red [b] => green [2] => [3] => blue [4] => red [c] => witer [5] => hello [6] => witer ) 

Array ( [a] => green [0] => [1] => red [3] => blue [c] => witer [5] => hello )