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<?php $test = [ 'key1' => [ 'title' => 'title' ], 'key2' => [ 'title' => 'title' ] ]; uasort($test, function (array $a, array $b) { return $a['title'] > $b['title']; }); var_dump($test); var_dump($test['key1']['title'] > $test['key2']['title']);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: uasort(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/e6noO on line 12 array(2) { ["key1"]=> array(1) { ["title"]=> string(5) "title" } ["key2"]=> array(1) { ["title"]=> string(5) "title" } } bool(false)
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Deprecated: uasort(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/e6noO on line 14 array(2) { ["key1"]=> array(1) { ["title"]=> string(5) "title" } ["key2"]=> array(1) { ["title"]=> string(5) "title" } } bool(false)
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
array(2) { ["key1"]=> array(1) { ["title"]=> string(5) "title" } ["key2"]=> array(1) { ["title"]=> string(5) "title" } } bool(false)
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
array(2) { ["key2"]=> array(1) { ["title"]=> string(5) "title" } ["key1"]=> array(1) { ["title"]=> string(5) "title" } } bool(false)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/e6noO on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/e6noO on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/e6noO on line 3
Process exited with code 255.
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266.1 ms | 401 KiB | 353 Q