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<?php $data = [ ["name" => "Mr San", "department" => "five"], ["name" => "Mr VSan", "department" => "six"], ["name" => "Mr QSan", "department" => "four"], ["name" => "Sr ASan", "department" => "two"], ["name" => "Dr ASan", "department" => "one"], ["name" => "Dr FSan", "department" => "three"] ]; array_multisort(preg_replace('/^[^ ]+ /', '', array_column($data, 'name')), $data); var_export($data);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array ( 0 => array ( 'name' => 'Dr ASan', 'department' => 'one', ), 1 => array ( 'name' => 'Sr ASan', 'department' => 'two', ), 2 => array ( 'name' => 'Dr FSan', 'department' => 'three', ), 3 => array ( 'name' => 'Mr QSan', 'department' => 'four', ), 4 => array ( 'name' => 'Mr San', 'department' => 'five', ), 5 => array ( 'name' => 'Mr VSan', 'department' => 'six', ), )

preferences:
129.9 ms | 403 KiB | 121 Q