3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class A { static function hello(){ echo "Hello World\n"; } } $y[0] = 'hello'; echo "A::${y[0]}()"; echo A::${y[0]}();
based on Mo2sV
Output for 7.2.0 - 7.3.0
A::hello() Warning: Use of undefined constant y - assumed 'y' (this will throw an Error in a future version of PHP) in /in/qifcC on line 12 Fatal error: Uncaught Error: Function name must be a string in /in/qifcC:12 Stack trace: #0 {main} thrown in /in/qifcC on line 12
Process exited with code 255.
Output for 7.0.0 - 7.1.25
A::hello() Notice: Use of undefined constant y - assumed 'y' in /in/qifcC on line 12 Fatal error: Uncaught Error: Function name must be a string in /in/qifcC:12 Stack trace: #0 {main} thrown in /in/qifcC on line 12
Process exited with code 255.
Output for 5.6.0 - 5.6.38
A::hello() Notice: Use of undefined constant y - assumed 'y' in /in/qifcC on line 12 Fatal error: Function name must be a string in /in/qifcC on line 12
Process exited with code 255.
Output for 5.3.21 - 5.5.38
Parse error: syntax error, unexpected '[' in /in/qifcC on line 12
Process exited with code 255.