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run code in 500+ PHP versions simultaneously
<?php $array = ['name' => 'aalaap','age' => 29, 'location' => 'mumbai']; $result = []; foreach ($array as $k => $result[]) { $result[] = $k; } var_export($result);
Output for 8.1.32 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.7
array ( 0 => 'aalaap', 1 => 'name', 2 => 29, 3 => 'age', 4 => 'mumbai', 5 => 'location', )

preferences:
43.03 ms | 862 KiB | 4 Q