3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arrays = array( range(1, 5), range(10, 15), range(-7, 0), ); echo join(", ", array_merge(...$arrays));
Output for git.master, git.master_jit, rfc.property-hooks
1, 2, 3, 4, 5, 10, 11, 12, 13, 14, 15, -7, -6, -5, -4, -3, -2, -1, 0

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