Selecting a specific div from a extern webpage using CURL

Question

Hi can anyone help me how to select a specific div from the content of a webpage.

Let\'s say i want to get the div with id=\"wrapper_content\" from webpage

Answer 1

check our hpricot, it lets you elegantly select sections

first you would use curl to get the document, then use hpricot to get the part you need

Answer 2

include('simple_html_dom.php');
$html = str_get_html($file_contents);
$elem = $html->find('div[id=wrapper_content]', 0);

Download simple_html_dom.php

Answer 3

HTML isn't regular, so you shouldn't use regex. Instead I would recommend a HTML Parser such as Simple HTML DOM or DOM

If you were going to use Simple HTML DOM you would do something like the following:

$html = str_get_html($file_contents);
$elem = $html->find('div[id=wrapper_content]', 0);

Even if you used regex your code still wouldn't work correctly. You need to get the contents of the page before you can use regex.

//wrong
if(!preg_match($s_searchFor, $ch)){
    $file_contents = curl_exec($ch);
}

//right
$file_contents = curl_exec($ch); //get the page contents
preg_match($s_searchFor, $file_contents, $matches); //match the element
$file_contents = $matches[0]; //set the file_contents var to the matched elements