PHP:如何解析相对URL [英] PHP: How to resolve a relative url
本文介绍了PHP:如何解析相对URL的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我需要一个给出相对URL的函数,而基数则返回一个绝对URL.我搜索并找到了许多以不同方式执行此功能的函数.
I need a function that given a relative URL and a base returns an absolute URL. I've searched and found many functions that do it different ways.
resolve("../abc.png", "http://example.com/path/thing?foo=bar")
# returns http://example.com/abc.png
有规范的方法吗?
在此站点上,我看到了有关python和c#的出色示例,让我们获得一个PHP解决方案.
On this site I see great examples for python and c#, lets get a PHP solution.
推荐答案
本文可能对您有帮助吗?
Perhaps this article could help?
http://nashruddin.com/PHP_Script_for_Converting_Relative_to_Absolute_URL
为方便起见,在下面复制了代码
reproduced code below for convenience
<?php
function rel2abs($rel, $base)
{
/* return if already absolute URL */
if (parse_url($rel, PHP_URL_SCHEME) != '' || substr($rel, 0, 2) == '//') return $rel;
/* queries and anchors */
if ($rel[0]=='#' || $rel[0]=='?') return $base.$rel;
/* parse base URL and convert to local variables:
$scheme, $host, $path */
extract(parse_url($base));
/* remove non-directory element from path */
$path = preg_replace('#/[^/]*$#', '', $path);
/* destroy path if relative url points to root */
if ($rel[0] == '/') $path = '';
/* dirty absolute URL */
$abs = "$host$path/$rel";
/* replace '//' or '/./' or '/foo/../' with '/' */
$re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#');
for($n=1; $n>0; $abs=preg_replace($re, '/', $abs, -1, $n)) {}
/* absolute URL is ready! */
return $scheme.'://'.$abs;
}
?>
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