<?php
 // Create the Function to get the string
 function GetStringBetween ($string, $start, $finish) {
    $string = " ".$string;
    $position = strpos($string, $start);
    if ($position == 0) return "";
    $position += strlen($start);
    $length = strpos($string, $finish, $position) - $position;
    return substr($string, $position, $length);
}
$string1='admin/config/dico/edit/ACCESS_FORBIDDEN/?field=&desc=#ACCESS_FORBIDDEN';
echo GetStringBetween ($string1, "admin/config/dico", "-")
?>