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run code in 300+ PHP versions simultaneously
<?php $array = array ( 'CurrentKey' => '09', 'Individual' => array ( 'key' => '00004822' ), 'Customer' => array ( 'recno' => 222, ), 'Address' => array ('city' => 'Fort Myers' ), 'Phone' => array ( 'phn_number' => '1111', ) ); $new_array = array_keys($array); var_Dump($new_array);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
array(5) { [0]=> string(10) "CurrentKey" [1]=> string(10) "Individual" [2]=> string(8) "Customer" [3]=> string(7) "Address" [4]=> string(5) "Phone" }
preferences:
243.19 ms | 404 KiB | 293 Q