3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $obj = new stdClass(); $data = ["foo"=>"bar"]; $key = "foo"; $obj->bar = "xyz"; echo "{$obj->{ ${'data'}[$key] }}\n"; echo "{$obj->{ ${data}[$key] }}\n";
based on 7E6Q8
Output for 7.2.0
xyz Warning: Use of undefined constant data - assumed 'data' (this will throw an Error in a future version of PHP) in /in/IVJqY on line 7 xyz
Output for 5.4.0 - 7.1.10
xyz Notice: Use of undefined constant data - assumed 'data' in /in/IVJqY on line 7 xyz
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/IVJqY on line 3
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
Parse error: parse error, unexpected '[' in /in/IVJqY on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/IVJqY on line 3
Process exited with code 255.