3v4l.org

run code in 300+ PHP versions simultaneously
<?php $values = array( 'int' => 42, 'bool' => true, 'float' => 1/3, 'string' => "foobar", 'null' => null, ); foreach ($values as $type => $value) { echo $type, " => "; var_dump(isset($value[2])); }
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 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
int => bool(false) bool => bool(false) float => bool(false) string => bool(true) null => bool(false)
preferences:
218.16 ms | 406 KiB | 370 Q