<?php
$array = [
["id" => 21153, "genre" => ["History", "Drama", "Thriller"]],
["id" => 21152, "genre" => ["ACTION"]],
["id" => 21151, "genre" => ["ROMANTIC"]],
["id" => 21150, "genre" => ["Drama"]]
];
$flat = array_merge(...array_column($array, 'genre'));
var_export(
array_combine($flat, $flat)
);
- Output for 7.4.0 - 7.4.33, 8.0.1 - 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 (
'History' => 'History',
'Drama' => 'Drama',
'Thriller' => 'Thriller',
'ACTION' => 'ACTION',
'ROMANTIC' => 'ROMANTIC',
)
preferences:
109.12 ms | 407 KiB | 5 Q