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<?php $config = [ 'fields' => [ ['id1' => 'someid', 'id2' => 'something'], ['id1' => 'someid', 'id2' => 'something'], ['id1' => 'someid', 'id2' => 'something'] ] ]; function config() { $a = ['id1' => 'someidA','id2' => 'somethingA']; $b = ['id1' => 'someidB','id2' => 'somethingB']; return [$a, $b]; } array_push($config['fields'], ...config()); var_export($config);
Output for 5.6.38, 7.1.26 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 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 - 8.3.25, 8.4.1 - 8.4.12
array ( 'fields' => array ( 0 => array ( 'id1' => 'someid', 'id2' => 'something', ), 1 => array ( 'id1' => 'someid', 'id2' => 'something', ), 2 => array ( 'id1' => 'someid', 'id2' => 'something', ), 3 => array ( 'id1' => 'someidA', 'id2' => 'somethingA', ), 4 => array ( 'id1' => 'someidB', 'id2' => 'somethingB', ), ), )

preferences:
198.96 ms | 409 KiB | 5 Q