3v4l.org

run code in 500+ PHP versions simultaneously
<?php $json = '{"lenght":0,"subcategory":[]}'; $last_id = 123; $obj = json_decode($json, true); array_push($obj["subcategory"], $last_id); $obj["lenght"] = (int)$obj["lenght"] + 1; $json = json_encode($obj); echo $json;
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.4, 8.3.6 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
{"lenght":1,"subcategory":[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 {"lenght":1,"subcategory":[123]}
preferences:
118.79 ms | 1372 KiB | 4 Q