<?php
$line = "HELLO WORLD HOW ARE YOU I AM JUST FINE THANKS";
$plan = [9, 20];
var_dump(plan_split($line, $plan));
function plan_split(string $line, array $plan) : array {
preg_match('/(.{' . implode('})(.{', $plan) . '})(.*)/s', $line, $m);
array_shift($m);
return $m;
}
array(3) {
[0]=>
string(9) "HELLO "
[1]=>
string(20) "WORLD HOW ARE YOU "
[2]=>
string(21) "I AM JUST FINE THANKS"
}
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(3) {
[0]=>
string(9) "HELLO "
[1]=>
string(20) "WORLD HOW ARE YOU "
[2]=>
string(21) "I AM JUST FINE THANKS"
}