PHP - Get a substring between two strings

getStringBetween.php

<?php
    /**
     * @param string $string
     * @param string $start
     * @param string $end
     *
     * @return bool|string
     * @see https://stackoverflow.com/questions/5696412/how-to-get-a-substring-between-two-strings-in-php
     *
     */
    public function getStringBetween(string $string, string $start, string $end)
    {
        $string = ' ' . $string;
        $ini = strpos($string, $start);
        if ($ini == 0) {
            return '';
        }
        $ini += strlen($start);
        $len = strpos($string, $end, $ini) - $ini;

        return substr($string, $ini, $len);
    }
?>