3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array( 'a' => array('w'=>'d','c'=>'q','v'=>'g','f' => 'h'), 'b' => 'v' ); echo json_encode($arr);
Output for 5.6.0 - 5.6.26, 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
{"a":{"w":"d","c":"q","v":"g","f":"h"},"b":"v"}
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 {"a":{"w":"d","c":"q","v":"g","f":"h"},"b":"v"}

preferences:
204.76 ms | 402 KiB | 218 Q