Online PHP editor | output for bnRrP

@ 2023-01-03T11:02:58Z

<?php

$data = [
    [
        [
            'Date' => '2021-03-15T00:00:00.0000000+01:00',
            'Arena' => ['Id' => 181796, 'Name' => 'Motala bibliotek'],
            'Description' => null,
            'IsCanceled' => null
        ],
        [
            'Date' => '2021-03-16T00:00:00.0000000+01:00',
            'Arena' => ['Id' => 181796, 'Name' => 'Motala bibliotek'],
            'Description' => null,
            'IsCanceled' => null
        ],
        [
            'Date' => '2021-03-17T00:00:00.0000000+01:00',
            'Arena' => ['Id' => 181796, 'Name' => 'Motala bibliotek'],
            'Description' => null,
            'IsCanceled' => null
        ]
    ],
    [
        [
            'Date' => '2021-03-15T00:00:00.0000000+01:00',
            'Arena' => ['Id' => 181796, 'Name' => 'Motala bibliotek'],
            'Description' => null,
            'IsCanceled' => null
        ],
        [
            'Date' => '2021-03-16T00:00:00.0000000+01:00',
            'Arena' => ['Id' => 181796, 'Name' => 'Motala bibliotek'],
            'Description' => null,
            'IsCanceled' => null
        ]
    ]
];

var_export(
    array_column(array_merge(...$data), 'Date')
);

echo "\n---\n";

$result1 = [];
array_walk_recursive(
    $data,
    function($v, $k) use (&$result1) {
        if ($k === 'Date') {
            $result1[] = $v;
        }
    }
);
var_export($result1);

echo "\n---\n";

$result2 = [];
foreach ($data as $group) {
    array_push($result2, ...array_column($group, 'Date'));
}
var_export($result2);

echo "\n---\n";

$result3 = [];
foreach ($data as $group) {
    foreach ($group as $row) {
        if (array_key_exists('Date', $row)) {
            $result3[] = $row['Date'];
        }
    }
}
var_export($result3);
echo "\n---\n";

$result4 = [];
foreach ($data as $group) {
    foreach ($group as ['Date' => $result4[]]);
}
var_export($result4);

Output for 7.2.34, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1: array ( 0 => '2021-03-15T00:00:00.0000000+01:00', 1 => '2021-03-16T00:00:00.0000000+01:00', 2 => '2021-03-17T00:00:00.0000000+01:00', 3 => '2021-03-15T00:00:00.0000000+01:00', 4 => '2021-03-16T00:00:00.0000000+01:00', ) --- array ( 0 => '2021-03-15T00:00:00.0000000+01:00', 1 => '2021-03-16T00:00:00.0000000+01:00', 2 => '2021-03-17T00:00:00.0000000+01:00', 3 => '2021-03-15T00:00:00.0000000+01:00', 4 => '2021-03-16T00:00:00.0000000+01:00', ) --- array ( 0 => '2021-03-15T00:00:00.0000000+01:00', 1 => '2021-03-16T00:00:00.0000000+01:00', 2 => '2021-03-17T00:00:00.0000000+01:00', 3 => '2021-03-15T00:00:00.0000000+01:00', 4 => '2021-03-16T00:00:00.0000000+01:00', ) --- array ( 0 => '2021-03-15T00:00:00.0000000+01:00', 1 => '2021-03-16T00:00:00.0000000+01:00', 2 => '2021-03-17T00:00:00.0000000+01:00', 3 => '2021-03-15T00:00:00.0000000+01:00', 4 => '2021-03-16T00:00:00.0000000+01:00', ) --- array ( 0 => '2021-03-15T00:00:00.0000000+01:00', 1 => '2021-03-16T00:00:00.0000000+01:00', 2 => '2021-03-17T00:00:00.0000000+01:00', 3 => '2021-03-15T00:00:00.0000000+01:00', 4 => '2021-03-16T00:00:00.0000000+01:00', )
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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