little gem

Hello guys....this is my first thread I started with php last week just for fun...and found php as one of the easiest lang. to learn and much more versatile .. Now then;i wrote a code in php to extract all links from webpage and save them(basically to view the source code of html files). Firstly i saved this webpage in a txt file using copy function which worked perfectly well for wepages with extension(.html or .htm) copy("$_POST['url]","sourcecode.txt"); Then i extracted the links from the webpage ,saved them in text file and using "<input type"checkbox"...........selected the links (mainly html or txt) which i again tried to save using copy function ...but here lies the problem i m not able to make it work . Source code: <?php /*assume $_POST['links'] contains a single link http://www.anysite.com/dummy/source.html*/ //echo "<br>hello"; $v=$_POST['links']; //-------Function to extract the file name from complete link--------- //For eg:i/p=http://www.anysite.com/dummy/source.html // o/p=source.html function filename($f) { $pos=strripos($f,"/"); $v=substr($f,$pos+1); return $v; } foreach ($v as $link)//right now assuming only one link is present { copy($link,filename($link));//doesn't work /*copy("http://www.anysite.com/dummy/source.html","source.html"); this one works*/ echo "<br>Source : $link"; echo "<br>Destination :". filename($link); } ?> Output: Source : http://www.anysite.com/dummy/source.html Destination :source.html with no file being copied... i tries using fopen() to open links but doesn't seem to work with http:// Also,kindly..suggest a better a way to download content from web.(mainly html and pdf files) using php. I am using apache 2.2.4 PHP 5.2.3