3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { function f() { $a = async function () { $a = 1; }; } }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.6
Parse error: syntax error, unexpected 'function' (T_FUNCTION) in /in/0pYAA on line 5
Process exited with code 255.
preferences:
170.51 ms | 1395 KiB | 35 Q