从php中的任何字符串中提取所有url / domains

Question

I use php and get the following text string from a textbox.

This is a string I have:

header1            header2             edit
b-1246431          12.01.13            1246431  |  blog.domain.net            1232,00 ‌‌
details
b-1312231          12.01.13            1246431  |  blog.domain.co.uk          12312,00
b-2344311          12.01.13            1246431  |  www.domain.com/             9129,00 ‌‌
b-2344322          12.01.13            1246431  |  http://abc.de              1332,00 ‌‌
b-2344322          13.01.13            1246431  |  www.cdf.de/                 21140,00             ‌‌edit
b-1233422          06.01.13            1246431  |  www.dto.de/site1      21110,00
b-1233542          06.01.13            1246431  |  www.ghj.ca/site2.html      28110,00             ‌‌             edit
b-1231242          06.01.13            1246431  |  www.another.de            2101,00             ‌‌
b-1231231          04.01.13            1246431  |  onlyme.info/  

I want this output:

blog.domain.net
blog.domain.co.uk
www.domain.com/
http://abc.de
www.cdf.de/
www.dto.de/site1
www.ghj.ca/site2.html
www.another.de
onlyme.info/  

The string will change. I always need only the urls extracted. The problem might be: sometimes urls start with www, http, or dont even have both. Still they should be seen as urls.

I already looked up these posts: extracting one or more urls from a string in php http://daringfireball.net/2010/07/improved_regex_for_matching_urls

... but nothing worked for my textstring...

Answer 1

Try it with a regular expression:

<?php
$input = "header1            header2             edit
b-1246431          12.01.13            1246431  |  blog.domain.net            1232,00 ‌‌
details
b-1312231          12.01.13            1246431  |  blog.domain.co.uk          12312,00
b-2344311          12.01.13            1246431  |  www.domain.com/             9129,00 ‌‌
b-2344322          12.01.13            1246431  |  http://abc.de              1332,00 ‌‌
b-2344322          13.01.13            1246431  |  www.cdf.de/                 21140,00             ‌‌edit
b-1233422          06.01.13            1246431  |  www.dto.de/site1      21110,00
b-1233542          06.01.13            1246431  |  www.ghj.ca/site2.html      28110,00             ‌‌             edit
b-1231242          06.01.13            1246431  |  www.another.de            2101,00             ‌‌
b-1231231          04.01.13            1246431  |  onlyme.info/";

preg_match_all('#[-a-zA-Z0-9@:%_\+.~\#?&//=]{2,256}\.[a-z]{2,4}\b(\/[-a-zA-Z0-9@:%_\+.~\#?&//=]*)?#si', $input, $result);

foreach ($result[0] as $url)
{
    echo $url . "<br />
";
}

Or see my PHPFiddle here: PHPFiddle