3v4l.org

run code in 300+ PHP versions simultaneously
<?php function myBlah(&$matches){ if(!$matches){ $matches = []; } $matches ['test'] = 'hellooo!'; $matches []= 'see?'; } $matches = []; myBlah($matches); var_dump($matches); myBlah($matches); var_dump($matches);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.3.7
array(2) { ["test"]=> string(8) "hellooo!" [0]=> string(4) "see?" } array(3) { ["test"]=> string(8) "hellooo!" [0]=> string(4) "see?" [1]=> string(4) "see?" }
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 array(2) { ["test"]=> string(8) "hellooo!" [0]=> string(4) "see?" } array(3) { ["test"]=> string(8) "hellooo!" [0]=> string(4) "see?" [1]=> string(4) "see?" }

preferences:
199.02 ms | 402 KiB | 288 Q