3v4l.org

run code in 300+ PHP versions simultaneously
<?php $o1 = array('foo' => '1', 'bar' => '2'); $o2 = array('foo' => '3', 'baz' => '4', 'qux' => 5); $o3 = array_intersect_key($o2, array_fill_keys(array('foo', 'qux'), null)); print_r($o1 + $o3);
Output for 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Array ( [foo] => 1 [bar] => 2 [qux] => 5 )
Output for 5.1.0 - 5.1.6
Fatal error: Call to undefined function array_fill_keys() in /in/DfYM5 on line 4
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Call to undefined function array_intersect_key() in /in/DfYM5 on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_intersect_key() in /in/DfYM5 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: array_intersect_key() in /in/DfYM5 on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_intersect_key() in /in/DfYM5 on line 4
preferences:
272.09 ms | 401 KiB | 460 Q