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<?php $a1 = [ ['target_id' => 123], ['target_id' => 234], ['target_id' => 345], ]; $a2 = [ ['target_id' => 123, 'type' => 'node'], ['target_id' => 234, 'type' => 'node'], ['target_id' => 345, 'type' => 'node'], ]; var_dump($a1, $a2);
Output for 5.6.30
array(3) { [0]=> array(1) { ["target_id"]=> int(123) } [1]=> array(1) { ["target_id"]=> int(234) } [2]=> array(1) { ["target_id"]=> int(345) } } array(3) { [0]=> array(2) { ["target_id"]=> int(123) ["type"]=> string(4) "node" } [1]=> array(2) { ["target_id"]=> int(234) ["type"]=> string(4) "node" } [2]=> array(2) { ["target_id"]=> int(345) ["type"]=> string(4) "node" } }