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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
within the function $var is 123 outside of the function $var is 123
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 within the function $var is 123 outside of the function $var is 123
preferences:
167.11 ms | 402 KiB | 219 Q