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<?php $in = "1234"; $arr = array($in => "foobar"); $keys = array_keys($arr); $out = $keys[0]; var_dump($key); var_dump($in == $out); var_dump($in === $out); ?>
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $key in /in/lkCmV on line 7 NULL bool(true) bool(false)

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