3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(json_last_error()); json_decode(''); var_dump(json_last_error()); json_decode('[};]'); var_dump(json_last_error()); json_decode(''); var_dump(json_last_error());
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 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
int(0) int(4) int(2) int(4)
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 int(0) int(4) int(2) int(4)
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
int(0) int(0) int(4) int(0)
preferences:
232.46 ms | 402 KiB | 315 Q