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@ 2023-06-03T13:08:29Z

<?php

$movies = [
    'MOVIE TITLE #1' => [
        'id' => 11990,
        'times' => [
            '2023-06-03' => [
                '11:00am',
                '2:30pm',
                '6:00pm',
                '9:30pm',
            ],
            '2023-06-04' => [
                '12:30pm',
                '4:00pm',
                '7:30pm',
            ],
            '2023-06-06' => [
                '12:30pm',
                '4:00pm',
                '7:30pm',
            ],
        ],
    ],
    'MOVIE TITLE #2' => [
        'id' => 11892,
        'times' => [
            '2023-06-03' => [
                '12:00pm',
                '3:30pm',
                '7:00pm',
            ],
        ],
    ],
];

$dates = array_flip(['2023-06-03', '2023-06-04']);

$result = [];
foreach ($movies as $title => ['times' => $times]) {
    foreach (array_intersect_key($times, $dates) as $date => $times) {
        $result[$date][$title] = $times;
    }
}
var_export($result);

Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13: array ( '2023-06-03' => array ( 'MOVIE TITLE #1' => array ( 0 => '11:00am', 1 => '2:30pm', 2 => '6:00pm', 3 => '9:30pm', ), 'MOVIE TITLE #2' => array ( 0 => '12:00pm', 1 => '3:30pm', 2 => '7:00pm', ), ), '2023-06-04' => array ( 'MOVIE TITLE #1' => array ( 0 => '12:30pm', 1 => '4:00pm', 2 => '7:30pm', ), ), )

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