替换数组PHP

Question

[lang_1] => Array
    (
        [0] => Array
            (
                [answer] => satu
                [status_answer] => 2
                [key_array] => 0
                [language] => lang_1
            )

        [1] => Array
            (
                [answer] => dua_en
                [status_answer] => 3
                [key_array] => 
                [language] => lang_1
            )

        [2] => Array
            (
                [answer] => lima
                [status_answer] => 3
                [key_array] => 
                [language] => lang_1
            )

        [3] => Array
            (
                [answer] => enam
                [status_answer] => 3
                [key_array] => 
                [language] => lang_1
            )

    )

[lang_2] => Array
    (
        [0] => Array
            (
                [answer] => satu
                [status_answer] => 3
                [key_array] => 
                [language] => lang_2
            )

        [1] => Array
            (
                [answer] => dua_en
                [status_answer] => 2
                [key_array] => 1
                [language] => lang_2
            )

        [2] => Array
            (
                [answer] => lima
                [status_answer] => 3
                [key_array] => 
                [language] => lang_2
            )

        [3] => Array
            (
                [answer] => enam
                [status_answer] => 3
                [key_array] => 
                [language] => lang_2
            )

    )

I have this two array. My problem is, how i can replace array in lang_1 with array in lang_2 where status_answer = 2 only

Answer 1

First search lang_2 for the element you want:

foreach ($array['lang_2'] as $el) {
    if ($el['status_answer'] == 2) {
        $replacement = $el;
        break;
    }
}

Then search lang_1 for the element you want to replace:

foreach ($array['lang_1'] as &$el) {
    if ($el['status_answer'] == 2) {
        $el = $replacement;
    }
}