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run code in 300+ PHP versions simultaneously
<?php $arr = [ ['alpha', 1, 2, 3, 4, 5], ['beta', 1, 2, 3, 4, 5], ['gamma', 1, 2, 3, 4, 5], ['delta', 1, 2, 3, 4, 5] ]; var_export( array_map(fn(...$col) => is_numeric($col[0]) ? array_sum($col) : '', ...$arr) );
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => '', 1 => 4, 2 => 8, 3 => 12, 4 => 16, 5 => 20, )

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