3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $f = function() use () { $_GLOBALS["a"] = 2; echo $a + 1; }; echo $a; $f();
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.7
Parse error: syntax error, unexpected ')', expecting '&' or variable (T_VARIABLE) in /in/5Fnlp on line 4
Process exited with code 255.
preferences:
179.35 ms | 1395 KiB | 36 Q