如何過濾php數組中的精確值

Question

從另一個數組中排除值數組的最佳方法是什麼？就像我有一份價值清單，我不想在另一份清單中列出？我試圖不使用註冊前，我不認爲它應該是一個選項。

Answer 1

使用

array_dif

例如這樣

// our initial array 
$arr = Array("blue", "green", "red", "yellow", "green", "orange", "yellow", "indigo", "red"); 
print_r($arr); 

// remove the elements who's values are yellow or red 
$arr = array_diff($arr, array("yellow", "red")); 
print_r($arr); 

// optionally you could reindex the array 
$arr = array_values($arr); 
print_r($arr); 

Answer 2

看看PHP的array_diff()-function。從php.net例如：

// original list 
$array1 = array("a" => "green", "red", "blue", "red"); 

// these values will be removed from the first array 
$array2 = array("b" => "green", "yellow", "red"); 

$result = array_diff($array1, $array2); 

結果：

Array 
(
    [1] => blue 
)