Online PHP editor | output for bAu27

Output for 7.1.5 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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: int(0) string(0) ""
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) string(0) ""
Output for 7.1.0: int(1) string(0) ""
Output for 5.6.0 - 5.6.28, 7.0.0 - 7.0.20: Warning: substr_count(): Length should be greater than 0 in /in/bAu27 on line 4 bool(false) string(0) ""