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<?php $a=[5]; $a[]=$a; var_dump($a); print_r($a);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> int(5) [1]=> array(1) { [0]=> int(5) } } Array ( [0] => 5 [1] => Array ( [0] => 5 ) )

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