how can i extract all links from web page ?

how can i extract all links from web page ?

 

Here is an example how you can do it using JavaScript. Just add this script after the tag </body>:

<script type="text/javascript">
var all_a = document.getElementsByTagName("a");

var all_links = "";

for(var i=0; i<all_a.length; i++){
    all_links += "\n" + all_a[i].href;
}

alert("All links:\n"+all_links);
</script>

Code (JavaScript):

 

$url = "http://google.com";
$domDocument = @DOMDocument::loadHTML(file_get_contents($url));
$anchorNodeList = $domDocument->getElementsByTagName('a');
foreach ($anchorNodeList as $a)
	echo $a->getAttribute('href'), '<br/>';

PHP: