Online PHP editor | refs for E6aAB

<?php $array = [ ['in_user_id' => 157, 'st_meta_key' => 'city', 'st_meta_value' => 'jaipur'], ['in_user_id' => 157, 'st_meta_key' => 'latitude'], ['in_user_id' => 157, 'st_meta_key' => 'longitude'], ['in_user_id' => 203, 'st_meta_key' => 'city', 'st_meta_value' => 'Jaipur'], ['in_user_id' => 203, 'st_meta_key' => 'latitude', 'st_meta_value' => '26.8517972'], ['in_user_id' => 203, 'st_meta_key' => 'longitude', 'st_meta_value' => '75.7862232'], ['in_user_id' => 214, 'st_meta_key' => 'city', 'st_meta_value' => 'Jaipur'], ['in_user_id' => 214, 'st_meta_key' => 'latitude', 'st_meta_value' => '26.8517972'], ['in_user_id' => 214, 'st_meta_key' => 'longitude', 'st_meta_value' => '75.7862232'] ]; $result = []; foreach ($array as $row) { $result[$row['in_user_id']][$row['st_meta_key']] = $row['st_meta_value'] ?? ''; } var_export($result);