3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = [ 0 => 'a', 1 => 'b', 2=> 'c']; $b = [ 1 => 'b', 2 => 'c', 3=> 'd']; var_dump(array_merge($a, $b));
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(6) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" [3]=> string(1) "b" [4]=> string(1) "c" [5]=> string(1) "d" }
Output for 5.2.3 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/lfEkX on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.2
<br /> <b>Parse error</b>: syntax error, unexpected '[' in <b>/in/lfEkX</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
<br /> <b>Parse error</b>: parse error, unexpected '[' in <b>/in/lfEkX</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error in <b>/in/lfEkX</b> on line <b>3</b><br />
Process exited with code 255.