3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = 100; $function = function() use(&$var){ // notice the & $var = $var + 23; echo "within the function \$var is " . $var . "\n"; }; $function(); // calls the above function echo "outside of the function \$var is " . $var . "\n";
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
within the function $var is 123 outside of the function $var is 123

preferences:
112.15 ms | 408 KiB | 5 Q