3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class Wtf { public function aaa () { $name = 'bbb'; $this->{$name.'_act'}(); } public function bbb_act () { echo 'Hello, world'; } } $wtf = new Wtf; $wtf->aaa();
Output for 5.0.0 - 7.1.0
Hello, world
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/KVhZ7 on line 4
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_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/KVhZ7 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/KVhZ7 on line 4
Process exited with code 255.