3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "This is a string"; $words = []; $spaces = []; foreach (preg_split('~( +)~', $string, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE) as $s) { if (ctype_space($s)) { $spaces[] = strlen($s); } else { $words[] = $s; } } var_export([ 'words' => $words, 'spaces' => $spaces ]);
Output for 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 - 8.3.7
array ( 'words' => array ( 0 => 'This', 1 => 'is', 2 => 'a', 3 => 'string', ), 'spaces' => array ( 0 => 1, 1 => 1, 2 => 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 array ( 'words' => array ( 0 => 'This', 1 => 'is', 2 => 'a', 3 => 'string', ), 'spaces' => array ( 0 => 1, 1 => 1, 2 => 4, ), )

preferences:
136.8 ms | 402 KiB | 157 Q