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<?php var_dump($var === null, is_null($var), isset($var), null === $var, false === $var);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $var in /in/4OTTj on line 3 Warning: Undefined variable $var in /in/4OTTj on line 3 Warning: Undefined variable $var in /in/4OTTj on line 3 Warning: Undefined variable $var in /in/4OTTj on line 3 bool(true) bool(true) bool(false) bool(true) bool(false)

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