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<?php $a = 'hoge'; $b = 123; var_dump(compact('a','b','c'));
Output for git.master, git.master_jit, rfc.property-hooks
Warning: compact(): Undefined variable $c in /in/00LYO on line 4 array(2) { ["a"]=> string(4) "hoge" ["b"]=> int(123) }

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