3v4l.org

run code in 300+ PHP versions simultaneously
<?php $names = array ( 'Melyssa' => true, 'Colby' => true, 'Xyla' => true, 'Marsden' => true, 'Gail' => true, 'Eliana' => true, 'Marah' => true, 'Cyrus' => true, 'Meghan' => true, 'Sierra' => true, 'Isabelle' => true, 'Conan' => true, 'Price' => true, 'Owen' => true, 'Alfonso' => true, 'Harrison' => true, 'Ignatius' => true, 'Sage' => true, 'Irma' => true, 'Damon' => true, 'Cassidy' => true, 'Maile' => true, 'Hayes' => true, 'Arthur' => true, 'Maris' => true, 'Alma' => true, 'Remedios' => true, 'Autumn' => true, 'Jared' => true, 'Naida' => true, 'Jena' => true, 'Darryl' => true, 'Tamekah' => true, 'Lynn' => true, 'Madison' => true, 'Hope' => true, 'Rama' => true, 'Macy' => true, 'Aiko' => true, 'Nerea' => true, 'Ginger' => true, 'Deanna' => true, 'Aladdin' => true, 'Edward' => true, 'Risa' => true, 'Petra' => true, 'Aretha' => true, 'Joan' => true, 'Winifred' => true, 'Willow' => true, 'Serina' => true, 'Ira' => true, 'Cassady' => true, 'Moana' => true, 'Cheyenne' => true, 'Yasir' => true, 'Jakeem' => true, 'Dacey' => true, 'Todd' => true, 'Macon' => true, 'Yen' => true, 'Quynn' => true, 'Bruce' => true, 'Axel' => true, 'Brian' => true, 'Sloane' => true, 'Felicia' => true, 'Britanni' => true, 'Cherokee' => true, 'Inez' => true, 'Kylynn' => true, 'Maxwell' => true, 'Aline' => true, 'Barbara' => true, 'Dakota' => true, 'Karly' => true, 'Jeanette' => true, 'Amber' => true, 'Rhonda' => true, 'Felix' => true, 'Florence' => true, 'Melissa' => true, 'Lee' => true, 'Adara' => true, 'Zeus' => true, 'Rhea' => true, 'Tanya' => true, 'Rahim' => true, 'Kennan' => true, 'Teegan' => true, 'Victor' => true, 'Alea' => true, ); array_key_exists('Rhea', $names); array_key_exists('Agurkas', $names);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4

preferences:
275.06 ms | 405 KiB | 455 Q