protected function prepareBaseUrl()
{
$filename = basename($this->server->get('SCRIPT_FILENAME'));
if (basename($this->server->get('SCRIPT_NAME')) === $filename) {
$baseUrl = $this->server->get('SCRIPT_NAME');
} elseif (basename($this->server->get('PHP_SELF')) === $filename) {
$baseUrl = $this->server->get('PHP_SELF');
} elseif (basename($this->server->get('ORIG_SCRIPT_NAME')) === $filename) {
$baseUrl = $this->server->get('ORIG_SCRIPT_NAME'); // 1and1 shared hosting compatibility
} else {
// Backtrack up the script_filename to find the portion matching
// php_self
$path = $this->server->get('PHP_SELF', '');
$file = $this->server->get('SCRIPT_FILENAME', '');
$segs = explode('/', trim($file, '/'));
$segs = array_reverse($segs);
$index = 0;
$last = count($segs);
$baseUrl = '';
do {
$seg = $segs[$index];
$baseUrl = '/'.$seg.$baseUrl;
++$index;
} while ($last > $index && (false !== $pos = strpos($path, $baseUrl)) && 0 != $pos);
}
// Does the baseUrl have anything in common with the request_uri?
$requestUri = $this->getRequestUri();
if ($baseUrl && false !== $prefix = $this->getUrlencodedPrefix($requestUri, $baseUrl)) {
// full $baseUrl matches
return $prefix;
}
if ($baseUrl && false !== $prefix = $this->getUrlencodedPrefix($requestUri, rtrim(dirname($baseUrl), '/'.DIRECTORY_SEPARATOR).'/')) {
// directory portion of $baseUrl matches
return rtrim($prefix, '/'.DIRECTORY_SEPARATOR);
}
$truncatedRequestUri = $requestUri;
if (false !== $pos = strpos($requestUri, '?')) {
$truncatedRequestUri = substr($requestUri, 0, $pos);
}
$basename = basename($baseUrl);
if (empty($basename) || !strpos(rawurldecode($truncatedRequestUri), $basename)) {
// no match whatsoever; set it blank
return '';
}
// If using mod_rewrite or ISAPI_Rewrite strip the script filename
// out of baseUrl. $pos !== 0 makes sure it is not matching a value
// from PATH_INFO or QUERY_STRING
if (strlen($requestUri) >= strlen($baseUrl) && (false !== $pos = strpos($requestUri, $baseUrl)) && $pos !== 0) {
$baseUrl = substr($requestUri, 0, $pos + strlen($baseUrl));
}
return rtrim($baseUrl, '/'.DIRECTORY_SEPARATOR);
}