从字符串获取URL

本文介绍了从字符串获取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

一段时间以来，我一直在寻找使用PHP从字符串中获取URL的代码.我基本上是试图从消息中获取一个缩短的URL，然后稍后执行HEAD请求以查找实际的链接.

For a little while now I've been searching for a code to get URL's out of a string using PHP. I'm basically trying to get a Shortened URL out of a message, and then later do a HEAD request to find the actual link.

任何人都有从字符串返回URL的代码吗?

Anyone have any code that returns URLs from strings?

谢谢.

编辑Ghost Dog:

以下是我正在解析的示例:

Here is a sample of what I am parsing:

$test = "I am testing this application for test YAY!";

这是我得到的解决问题的答案:

And here is the response I got that solved it:

$regex = '$\b(https?|ftp|file)://[-A-Z0-9+&@#/%?=~_|!:,.;]*[-A-Z0-9+&@#/%=~_|]$i'; preg_match_all($regex, $string, $result, PREG_PATTERN_ORDER); $A = $result[0]; foreach($A as $B) { $URL = GetRealURL($B); echo "$URL<BR>"; } function GetRealURL( $url ) { $options = array( CURLOPT_RETURNTRANSFER => true, CURLOPT_HEADER => true, CURLOPT_FOLLOWLOCATION => true, CURLOPT_ENCODING => "", CURLOPT_USERAGENT => "spider", CURLOPT_AUTOREFERER => true, CURLOPT_CONNECTTIMEOUT => 120, CURLOPT_TIMEOUT => 120, CURLOPT_MAXREDIRS => 10, ); $ch = curl_init( $url ); curl_setopt_array( $ch, $options ); $content = curl_exec( $ch ); $err = curl_errno( $ch ); $errmsg = curl_error( $ch ); $header = curl_getinfo( $ch ); curl_close( $ch ); return $header['url']; }

有关详细信息，请参见答案.

See Answer for the Details.

推荐答案

以下代码可能会有所帮助(请参阅MadTechie的最新文章):

This code may be helpful (see MadTechie's latest post):

www.phpfreaks/forums/index.php/topic，245248.msg1146218.html#msg1146218

<?php $string = "some random text tinyurl/9uxdwc some google random text tinyurl/787988"; $regex = '$\b(https?|ftp|file)://[-A-Z0-9+&@#/%?=~_|!:,.;]*[-A-Z0-9+&@#/%=~_|]$i'; preg_match_all($regex, $string, $result, PREG_PATTERN_ORDER); $A = $result[0]; foreach($A as $B) { $URL = GetRealURL($B); echo "$URL<BR>"; } function GetRealURL( $url ) { $options = array( CURLOPT_RETURNTRANSFER => true, CURLOPT_HEADER => true, CURLOPT_FOLLOWLOCATION => true, CURLOPT_ENCODING => "", CURLOPT_USERAGENT => "spider", CURLOPT_AUTOREFERER => true, CURLOPT_CONNECTTIMEOUT => 120, CURLOPT_TIMEOUT => 120, CURLOPT_MAXREDIRS => 10, ); $ch = curl_init( $url ); curl_setopt_array( $ch, $options ); $content = curl_exec( $ch ); $err = curl_errno( $ch ); $errmsg = curl_error( $ch ); $header = curl_getinfo( $ch ); curl_close( $ch ); return $header['url']; } ?>