PHP获取当前相对于域名目录的方法
这篇文章主要介绍了PHP获取当前相对于域名目录的方法,可实现从URL中拆分出目录名的功能,需要的朋友可以参考下
本文实例讲述了PHP获取当前相对于域名目录的方法。分享给大家供大家参考。具体如下:
/dev/classd/index.php/download
比如这个地址,我想得到红色区域的地址用于生成站内的链接,名为 baseurl。
用 $_SERVER['SCRIPT_NAME'] 就可以了, $_SERVER['SCRIPT_NAME'] 是当前正在访问的PHP文件的相对路径,只要如下稍作处理:
从$_SERVER['SCRIPT_NAME']中获取目录部分,并且替换dirname函数可能出现的反斜杠问题
复制代码 代码如下:
$baseUrl = str_replace('\\','http://www.jb51.net/',dirname($_SERVER['SCRIPT_NAME']));
保证为空时能返回可以使用的正常值
复制代码 代码如下:
$baseUrl = empty($baseUrl) ? 'http://www.jb51.net/' : 'http://www.jb51.net/'.trim($baseUrl,'http://www.jb51.net/').'http://www.jb51.net/';
这样就可以正常获取到 /dev/classd/ 这部分的目录地址了。
顺便看了一下 Zend Framework 的 baseUrl() 函数,结果一看那么一大堆代码就没再继续看了,我就想不通同样的功能他用了一大堆一大堆的代码,从$_SERVER里获取了一堆,然后中间经过两三个类,,四五个方法才最终被我们直接调用,除了中间有三行是获取当前的PHP文件以外,其它都是没用和无谓的处理,ZF本身运行的已经够慢的了,这是什么一个意思呢。感兴趣的朋友可以研究一下。
希望本文所述对大家的php程序设计有所帮助。

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