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<?php $var = "some value"; unset($var); $isnull = is_null($var); $isnull2 = ($var === null); $isset = isset($var); var_dump($var); var_dump($isnull); var_dump($isnull2); var_dump($isset);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $var in /in/lUcVV on line 7 Warning: Undefined variable $var in /in/lUcVV on line 8 Warning: Undefined variable $var in /in/lUcVV on line 10 NULL bool(true) bool(true) bool(false)

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