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run code in 300+ PHP versions simultaneously
<?php $a = [1 => "abc", 2 => "def"]; $b = [1 => "ghi", 2 => "jkl"]; $c = [1 => "mno", 2 => "pqr"]; var_export($a + $b + $c);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 1 => 'abc', 2 => 'def', )

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