Online PHP editor | output for 5489u

<?php $recordings = [ 'name' => 'step_1_part_1', 'attr' => [ 'required' => 'true', 'format' => 'wav' ]], 'name' => 'step_2_part_1', 'attr' => [ 'required' => 'true', 'format' => 'wav' ]], 'name' => 'step_3_part_1', 'attr' => [ 'required' => 'false', 'format' => 'wav' ]], 'name' => 'step_4_part_1', 'attr' => [ 'required' => 'false', 'format' => 'wav' ]], 'name' => 'step_4_part_2', 'attr' => [ 'required' => 'false', 'format' => 'wav' ]], 'name' => 'step_4_part_3', 'attr' => [ 'required' => 'false', 'format' => 'wav' ]], 'name' => 'step_4_part_4', 'attr' => [ 'required' => 'false', 'format' => 'wav' ]], 'name' => 'step_4_part_5', 'attr' => [ 'required' => 'false', 'format' => 'wav' ]], 'name' => 'step_5_part_1', 'attr' => [ 'required' => 'false', 'format' => 'wav' ]], 'name' => 'step_6_part_1', 'attr' => [ 'required' => 'false', 'format' => 'wav' ]] ]; echo json_encode($recordings);