<?php $finalArr = array(); $newArr = array( 'title' => 'lorem', 'vehicles' => array( // New dimension added here array( 'type' => 'sedan', 'price' => 2900, ), ) ); array_push($finalArr, $newArr); $index = array_search('lorem', array_column($finalArr, 'title')); $addArr = array( 'type' => 'truck', 'price' => 4750 ); array_push($finalArr[$index]['vehicles'], $addArr); print_r($finalArr);
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