这是一个棘手的解决方案。最简单的做法是在您的应用程序中引入一个baseUrl
参数。如果站点在根目录下运行,它将为空,并且类似于/corp/site
is running out of domain.com/corp/site
.
这样,当您显示 URL 时,您将使用<?php echo $app_base_url . '/css/file.css' ?>
我经常使用 Zend Framework,他们有一个名为的类,该类Zend_Controller_Request_Http
有一个名为的方法,该方法getBaseUrl
通过一些复杂的逻辑检查$_SERVER
有关脚本路径和请求文件名的各种变量,最终确定您的基本 Url 实际是什么。
如果您使用 Zend 框架的特定部分,您可以执行以下操作:
$request = new Zend_Controller_Request_Http();
$baseUrl = $request->getBaseUrl();
由于 Zend Framework 是模块化的,您不需要包含整个库,我之前只使用过这个类(及其依赖项),因此我可以在一个小型应用程序中轻松计算基本 URL,而无需整个 ZF 库。
为了让您了解确定这一点所涉及的逻辑,这里是完成大部分工作的代码(注意,不要尝试直接使用它,而是使用如上所示的 Zend Framework 类)。
/**
* Set the base URL of the request; i.e., the segment leading to the script name
*
* E.g.:
* - /admin
* - /myapp
* - /subdir/index.php
*
* Do not use the full URI when providing the base. The following are
* examples of what not to use:
* - http://example.com/admin (should be just /admin)
* - http://example.com/subdir/index.php (should be just /subdir/index.php)
*
* If no $baseUrl is provided, attempts to determine the base URL from the
* environment, using SCRIPT_FILENAME, SCRIPT_NAME, PHP_SELF, and
* ORIG_SCRIPT_NAME in its determination.
*
* @param mixed $baseUrl
* @return Zend_Controller_Request_Http
*/
public function setBaseUrl($baseUrl = null)
{
if ((null !== $baseUrl) && !is_string($baseUrl)) {
return $this;
}
if ($baseUrl === null) {
$filename = (isset($_SERVER['SCRIPT_FILENAME'])) ? basename($_SERVER['SCRIPT_FILENAME']) : '';
if (isset($_SERVER['SCRIPT_NAME']) && basename($_SERVER['SCRIPT_NAME']) === $filename) {
$baseUrl = $_SERVER['SCRIPT_NAME'];
} elseif (isset($_SERVER['PHP_SELF']) && basename($_SERVER['PHP_SELF']) === $filename) {
$baseUrl = $_SERVER['PHP_SELF'];
} elseif (isset($_SERVER['ORIG_SCRIPT_NAME']) && basename($_SERVER['ORIG_SCRIPT_NAME']) === $filename) {
$baseUrl = $_SERVER['ORIG_SCRIPT_NAME']; // 1and1 shared hosting compatibility
} else {
// Backtrack up the script_filename to find the portion matching
// php_self
$path = isset($_SERVER['PHP_SELF']) ? $_SERVER['PHP_SELF'] : '';
$file = isset($_SERVER['SCRIPT_FILENAME']) ? $_SERVER['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 = $this->getRequestUri();
if (0 === strpos($requestUri, $baseUrl)) {
// full $baseUrl matches
$this->_baseUrl = $baseUrl;
return $this;
}
if (0 === strpos($requestUri, dirname($baseUrl))) {
// directory portion of $baseUrl matches
$this->_baseUrl = rtrim(dirname($baseUrl), '/');
return $this;
}
$truncatedRequestUri = $requestUri;
if (($pos = strpos($requestUri, '?')) !== false) {
$truncatedRequestUri = substr($requestUri, 0, $pos);
}
$basename = basename($baseUrl);
if (empty($basename) || !strpos($truncatedRequestUri, $basename)) {
// no match whatsoever; set it blank
$this->_baseUrl = '';
return $this;
}
// 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));
}
}
$this->_baseUrl = rtrim($baseUrl, '/');
return $this;
}