3v4l.org

run code in 300+ PHP versions simultaneously
<?php $options['key'][] = 'testkey1'; $options['value'][] = 'testvalue1'; $options['key'][] = 'testkey2'; $options['value'][] = 'testvalue2'; $options['key'][] = 'testkey3'; $options['value'][] = 'testvalue3'; var_dump($options);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(2) { ["key"]=> array(3) { [0]=> string(8) "testkey1" [1]=> string(8) "testkey2" [2]=> string(8) "testkey3" } ["value"]=> array(3) { [0]=> string(10) "testvalue1" [1]=> string(10) "testvalue2" [2]=> string(10) "testvalue3" } }

preferences:
282.59 ms | 406 KiB | 456 Q