<?php
$s = 'there is no spoon';
$matches = [];
preg_match('~(spoon|fiddle)~',$s,$matches);
var_dump($matches);
//seems that yes, we can reuse $matches.
preg_match('~(blah)~',$s,$matches);
var_dump($matches);
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(2) {
[0]=>
string(5) "spoon"
[1]=>
string(5) "spoon"
}
array(0) {
}