Remove elements from array1 that are in array2

Question

I have arrays that looks like this:

$array1 = array(
    '[email protected]' => array(
        'peter' => 'Smith',
    ),
    '[email protected]' => array(
        'john' => 'Smith',
    ),
    '[email protected]' => array(
        'louis' => 'Smith',
    ),
    '[email protected]' => array(
        'jane' => 'Smith',
    ),
);


$array2 = array(
    '0' => '[email protected]',
    '1' => '[email protected]',
);

How do I remove the array elements in array1 that match array2?

deceze · Accepted Answer · 2011-06-10 13:32:05Z

9

As simple as:

$diff = array_diff_key($array1, array_flip($array2));

answered Jun 10, 2011 at 13:32

deceze♦

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1 Comment

user743234 Over a year ago

If I saw this reply I should haven't replied in this question (:

user743234 · Accepted Answer · 2011-06-10 13:35:40Z

0

Quick and easy (but not as quick and easy as deceze's method, lol)

foreach ($array1 as $key => $value) {
    for ($i = 0; $i < count($array2); $i++) {
        if ($key == $array2[$i]) {
            unset($array1[$key]);
        }
    }
}

answered Jun 10, 2011 at 13:35

user743234

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