Online PHP editor | output for 7G2kW

@ 2018-04-24T13:35:17Z

<?php

$array = Array
(
    '0' => (object)[
        'id' => 17,
        'res_id' => 10,
        'cat_id' => 3
    ],
    '1' => (object)[
        'id' => 18,
        'res_id' => 10,
        'cat_id' => 4
    ],
    '2' => (object)[
        'id' => 52,
        'res_id' => 19,
        'cat_id' => 1
    ],
    '3' => (object)[
        'id' => 53,
        'res_id' => 19,
        'cat_id' => 3
    ],
    '4' => (object)[
        'id' => 54,
        'res_id' => 19,
        'cat_id' => 4
    ]
);

$result = array_map(function($x){
    return $x->cat_id;
}, $array);

print_r($result);

Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 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, 8.4.16, 8.5.0 - 8.5.1: Array ( [0] => 3 [1] => 4 [2] => 1 [3] => 3 [4] => 4 )
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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