How to replace string between two characters in php?

Here’s a code to replace all the text between two specific characters:

BY Best Interview Question ON 18 Aug 2020

function replace_all_text_between($str, $start, $end, $replacement) {

$replacement = $start . $replacement . $end;

    $start = preg_quote($start, '/');
    $end = preg_quote($end, '/');
    $regex = "/({$start})(.*?)({$end})/";

return preg_replace($regex,$replacement,$str);
}