Extract URLs from text file [duplicate]

Question

I have a text file with many different URL typed in the text.

For example:

file:///g:/somepath/subpath/file.txt /somepath/subpath/file.txt Http://www.domain.at/path/file.txt

I need them to be extracted from the file. In the text file there is no HTML, so I cannot search for something like href.

Is there a RegEx for PHP that I can use?

There are several, but no human knows them by heart. Ask Google. — Jon
– Jon, Commented Dec 15, 2011 at 20:48
If each is on a separate line or has the same separator, just read the file and explode it. — Grexis
– Grexis, Commented Dec 15, 2011 at 21:01
the links are in the middle of the text, there is no special sign to explode them. — Neugi
– Neugi, Commented Dec 16, 2011 at 6:42

Dejan Marjanović · Accepted Answer · 2011-12-16 16:02:28Z

Post entire file if you want more help. From given...

<?php $string = 'file:///g:/somepath/subpath/file.txt dasdsaddasdf dsafddsad /somepath/subpath/file.txt Http://www.domain.at/path/file.txt adsadsadasd '; preg_match_all('#([\S]+)\.txt#is', $string, $matches); print_r($matches[1]); ?>

Result

Array ( [0] => file:///g:/somepath/subpath/file [1] => /somepath/subpath/file [2] => Http://www.domain.at/path/file )

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