Get all matches from string that start with and end, using php

Question

How would I use PHP to extract everything in between [startstring] and [endstring] from this string:

[startstring]hello = guys[ends         


        

Answer 1

preg_match_all('/\[startstring\](.*?)\[endstring\]/s', $input, $matches);
echo implode(' ', $matches);

---

preg_match_all('/\[startstring\](.*?)\=(.*?)\[endstring\]/s', $input, $matches);
for ($i = 0; $i < count($matches[1]); $i++) {
    $key = $matches[1][$i];
    $value = $matches[2][$i];
    $$key = $value;
}