如何从多维数组中删除空数组？

Question

I have an array like :

Array
(
    [0] => Array
        (
            [id] => 1367
            [category_value] => 15
            [isepisode] => 0
            [title] => hello world
        )

    [1] => Array
        (
            [id] => 9892
            [category_value] => 
            [isepisode] => 0
            [title] => 
        )
    [2] => Array
        (
            [id] => 9895
            [category_value] => 
            [isepisode] => 0
            [title] => Bla Bla
        )
)

I want to remove array those title is empty.

Here is my code:

$res = array_map('array_filter', $data);
print_r(array_filter($res)); exit;

Above code only removing those array values are empty. But I want to remove whole array which title is null. My output should be:

Array
(
    [0] => Array
        (
            [id] => 1367
            [category_value] => 15
            [isepisode] => 0
            [title] => hello world
        )
    [2] => Array
        (
            [id] => 9895
            [category_value] => 
            [isepisode] => 0
            [title] => Bla Bla
        )
)

Note: I have thousands of array. If put foreach this will take time to execute. Is there any easiest way to do that?

Answer 1

The right array_filter() approach:

$result = array_filter($arr, function($a){ return $a['title']; });