3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array('foo' => "xyz", null => "abc"); $b = array('bar' => "baz", null => "xyz"); var_dump(array_merge($a,b)); var_dump(merge($a,$b)); function merge(array $a, array $b) { foreach ($b as $key => $value) { if (isset($a[$key])) { if (is_int($key)) { $a[] = $value; } elseif (is_array($value) && is_array($a[$key])) { $a[$key] = static::merge($a[$key], $value); } else { $a[$key] = $value; } } else { $a[$key] = $value; } } return $a; }
Output for hhvm-3.10.0 - 3.12.0
Notice: Use of undefined constant b - assumed 'b' in /in/RrnGO on line 7 Warning: Invalid operand type was used: expects array(s) in /in/RrnGO on line 7 NULL array(3) { ["foo"]=> string(3) "xyz" [""]=> string(3) "xyz" ["bar"]=> string(3) "baz" }
Output for 5.3.0 - 5.6.28
Notice: Use of undefined constant b - assumed 'b' in /in/RrnGO on line 7 Warning: array_merge(): Argument #2 is not an array in /in/RrnGO on line 7 NULL array(3) { ["foo"]=> string(3) "xyz" [""]=> string(3) "xyz" ["bar"]=> string(3) "baz" }
Output for 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_STATIC in /in/RrnGO on line 18
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/RrnGO on line 11
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/RrnGO on line 11
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_ARRAY, expecting ')' in /in/RrnGO on line 11
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/RrnGO on line 11
Process exited with code 255.