Extract all A links from a page and optionally remove all of those that are not 'on-site'. This is achieved by passing in the full URL to the constructor, for example:
http://foo.bar.com
which enables a simplistic check to know what's local and what isn't.
LGPL3. Do what you will with it but a link back would be nice and also knowing what you used it for is also of interest! Thanks. :)
This class implements the following interfaces: Iterator, ArrayAccess which means you can treat is just like an array m aking it very easy to process the links it finds at any given location.
I have made it immutable once loaded. If you try to change the contents of it after it has been loaded it will die. You can change that if you want but I prefer not to change things once they are fixed, that's my 'functional' bias with PHP these days!
$links = new PageSucker("http://google.com");
echo $links[0];
$links[0] = "something"; // will die() as you cannot change its contents.
foreach ($links as $l) {
echo $l . '<br />';
}If you run the example program as listed you should see this output:
$ php example.php
string(29) "http://www.google.co.uk/webhp"
string(29) "http://www.google.co.uk/imghp"
string(29) "http://maps.google.co.uk/maps"
string(24) "https://play.google.com/"
string(23) "http://www.youtube.com/"
string(30) "http://news.google.co.uk/nwshp"
string(29) "https://mail.google.com/mail/"
string(25) "https://drive.google.com/"
string(40) "http://www.google.co.uk/intl/en/options/"
string(31) "https://www.google.com/calendar"
string(30) "http://translate.google.co.uk/"
string(31) "http://books.google.co.uk/bkshp"
string(32) "http://www.google.co.uk/shopping"
string(23) "http://www.blogger.com/"
string(31) "http://www.google.co.uk/finance"
string(30) "https://plus.google.com/photos"
string(26) "http://video.google.co.uk/"
string(40) "https://accounts.google.com/ServiceLogin"
string(35) "http://www.google.co.uk/preferences"
string(32) "http://google.com:80/preferences"
string(38) "http://www.google.co.uk/history/optout"
string(36) "http://google.com:80/advanced_search"
string(35) "http://google.com:80/language_tools"
string(33) "http://google.com:80/intl/en/ads/"
string(30) "http://google.com:80/services/"
string(45) "https://plus.google.com/103583604759580854844"
string(39) "http://google.com:80/intl/en/about.html"
string(37) "http://www.google.co.uk/setprefdomain"
string(38) "http://google.com:80/intl/en/policies/"
I don't want to be mutable
Note the message at the end. I deliberatelty chose it to be this way so that my code (or anybody elses) couldn't accidentally add things that weren't there in the first place. Change it if you want.
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