3v4l.org

run code in 300+ PHP versions simultaneously
<?php function starts_with_upper($str) { $chr = mb_substr ($str, 0, 1, "UTF-8"); return mb_strtolower($chr, "UTF-8") != $chr; } print("STARTS WITH 'a': Hello " . starts_with_upper('Hello') . "\n\n"); print("STARTS WITH 'a': hello " . starts_with_upper('hello') . "\n\n");
Output for 7.3.33, 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12
STARTS WITH 'a': Hello 1 STARTS WITH 'a': hello
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 STARTS WITH 'a': Hello 1 STARTS WITH 'a': hello
preferences:
125.73 ms | 407 KiB | 5 Q