3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'ditiseentest'; $length = 4; $expected = [ 'diti', 'itis', 'tise', 'isee', 'seen', 'eent', 'ente', 'ntes', 'test' ]; for($i=0;$i<strlen($string);$i++) { echo substr($string, $i, $length) . "\r\n"; }
Output for 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 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
diti itis tise isee seen eent ente ntes test est st t
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 diti itis tise isee seen eent ente ntes test est st t

preferences:
208.76 ms | 402 KiB | 216 Q