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<?php $Test = array( array("a"=>"004", "n"=>"03"), array("a"=>"003", "n"=>"02"), array("a"=>"001", "n"=>"02"), array("a"=>"005", "n"=>"01"), array("a"=>"001", "n"=>"01"), array("a"=>"004", "n"=>"02"), array("a"=>"003", "n"=>"01"), array("a"=>"004", "n"=>"01") ); $orderBy = ['a', 'n']; usort($Test, fn($a, $b) => array_map(fn($v) => $a[$v], $orderBy) <=> array_map(fn($v) => $b[$v], $orderBy) ); var_export($Test);
Output for 7.4.0 - 7.4.27, 8.0.0 - 8.0.15, 8.1.0 - 8.1.2
array ( 0 => array ( 'a' => '001', 'n' => '01', ), 1 => array ( 'a' => '001', 'n' => '02', ), 2 => array ( 'a' => '003', 'n' => '01', ), 3 => array ( 'a' => '003', 'n' => '02', ), 4 => array ( 'a' => '004', 'n' => '01', ), 5 => array ( 'a' => '004', 'n' => '02', ), 6 => array ( 'a' => '004', 'n' => '03', ), 7 => array ( 'a' => '005', 'n' => '01', ), )
Output for 7.3.0 - 7.3.33
Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW), expecting ')' in /in/cQnV9 on line 15
Process exited with code 255.
Output for 7.1.26 - 7.1.33, 7.2.17 - 7.2.33
Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW), expecting ',' or ')' in /in/cQnV9 on line 15
Process exited with code 255.

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