How do you filter exact values from a php array

What's the best way to exclude an array of values from another array? Like if I had a list of values I don't want in a different list? I'm trying not to use reg ex and I don't think it开发者_开发技巧 should be an option.

Take a look at PHP's array_diff()-function. Example from php.net:

// 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);

Result:

Array
(
    [1] => blue
)

Use

array_dif

For example like this

// 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);