Home > Article > Backend Development > PHP restores Weibo short address to actual URL_PHP tutorial
PHP restores Weibo short address to actual URL_PHP tutorial
- WBOYOriginal
- 2016-07-13 10:33:551242browse
Due to the character limit in Weibo, if you post a URL, it will automatically be converted into a short URL. Several of my previous articles introduced how to convert a URL to a short URL. Here we go the other way and restore the short URL to the actual URL. Please refer to the following program to implement it with PHP:
<?php
$url = "http://163.fm/1QLJ8U";
echo unshorten($url);
function unshorten($url)
{
$url = trim($url);
$headers = get_headers($url);
$location = $url;
$short = false;
foreach($headers as $head)
{
if($head=="HTTP/1.1 302 Found")
$short = true;
if($short && startwith($head,"Location: "))
{
$location = substr($head,10);
}
}
return $location;
}
function startwith($Haystack, $Needle)
{
return strpos($Haystack, $Needle) === 0;
}
?>
The results of running the program are as follows:
http://www.bkjia.com/
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：How to use PHP to implement a WebService_PHP tutorialNext article：How to use PHP to implement a WebService_PHP tutorial