3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo($a) { $page1 = isset($a['page']) ? $a['page'] : 1; echo 'P1: ', $page1, "\n"; $page2 = $a['page'] ?? 1; echo 'P2: ', $page2, "\n"; $page3 = array_key_exists('page', $_GET) ? $_GET['page'] : 1; echo 'P3: ', $page3, "\n"; echo ($page1 === $page2) === $page3 ? 't' : 'n', "\n"; } $a = array('page' => 3); foo($a); $a = array(); foo($a); $a = array('page' => Null); foo($a); $a = array('page' => 0); foo($a); ?>
based on gARH1
Output for 7.0.0 - 7.3.0rc3
P1: 3 P2: 3 P3: 1 n P1: 1 P2: 1 P3: 1 n P1: 1 P2: 1 P3: 1 n P1: 0 P2: 0 P3: 1 n
Output for 5.5.0 - 5.6.23
Parse error: syntax error, unexpected '?' in /in/ta5m4 on line 8
Process exited with code 255.