3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function test(&$foo="123333") { $foo = $foo + 1; echo "foo = $foo\n"; } $bar = 123; test($bar); test(); echo "bar = $bar\n";
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
foo = 124 foo = 123334 bar = 124
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '=', expecting ')' in /in/sXDvL on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '=', expecting ')' in /in/sXDvL on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/sXDvL on line 3
Process exited with code 255.