Online PHP editor | output for 8sKOL

@ 2020-10-04T03:21:27Z

<?php

$array = [
    ['id' => 7867867, 'title' => 'Some Title'],
    ['id' => 3452342, 'title' => 'Some Title'],
    ['id' => 'foo', 'title' => 'Some Title'],
    ['id' => 1231233, 'title' => 'Some Title'],
    ['id' => 'bar', 'title' => 'Some Title'],
    ['id' => 5867867, 'title' => 'Some Title']
];

// restructure with values as keys, and keys as order (ASC)
$order = array_flip([3452342, 5867867, 7867867, 1231233]);
// generating $order = [3452342 => 0, 5867867 => 1, 7867867 => 2, 1231233 => 3];

$default = count($order);
// generating $default = 4

usort(
    $array,
    fn($a, $b) => ($order[$a['id']] ?? $default) <=> ($order[$b['id']] ?? $default)
);

var_export($array);

Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.13: array ( 0 => array ( 'id' => 3452342, 'title' => 'Some Title', ), 1 => array ( 'id' => 5867867, 'title' => 'Some Title', ), 2 => array ( 'id' => 7867867, 'title' => 'Some Title', ), 3 => array ( 'id' => 1231233, 'title' => 'Some Title', ), 4 => array ( 'id' => 'foo', 'title' => 'Some Title', ), 5 => array ( 'id' => 'bar', 'title' => 'Some Title', ), )
Output for 7.3.0 - 7.3.33: Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW), expecting ')' in /in/8sKOL on line 21
Process exited with code 255.
Output for 7.2.0 - 7.2.34: Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW), expecting ',' or ')' in /in/8sKOL on line 21
Process exited with code 255.

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