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<?php // Everything you enter here will be executed by our servers. Try it! $array = array(); var_dump(isset($array['something'])); var_dump(null !== $array['something']);
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(false) Notice: Undefined index: something in /in/dkeN1 on line 6 bool(false)
Output for 4.3.0 - 5.2.17
bool(false) Notice: Undefined index: something in /in/dkeN1 on line 6 bool(false)