3v4l.org

run code in 300+ PHP versions simultaneously
<?php $values = array( 4515, 4516, 4517, 4518, 4519, 4602, 4603, 4604, 4605, 4606, 4607 ); foreach ($values as $v) { $p=pack('N1', $v); $sw=mb_strwidth($p, 'UCS-4BE'); echo "$sw\n"; }
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
1 1 1 1 1 1 1 1 1 1 1
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 1 1 1 1 1 1 1 1 1 1 1
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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
2 2 2 2 2 2 2 2 2 2 2
preferences:
197.41 ms | 402 KiB | 288 Q