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run code in 150+ php & hhvm versions
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<?php $foo = array('foo', 'bar'); $baz = array('baz'); var_dump(array_merge($foo, $baz));
Output for 4.3.0 - 7.1.0
array(3) { [0]=> string(3) "foo" [1]=> string(3) "bar" [2]=> string(3) "baz" }