php - Unsure on how to convert the code I already have to html dom -

the scraping code have not working i've searched , found need use dom , unsure how implement have dom after reading. worried breaking something. help/tutorials highly appreciated.

// input $link = post('link1'); $category = post('category'); $time = post('time');  // markers $findme1 = 'https://www.mturk.com/mturk/preview?groupid='; $findme2 = '<span class="reward">'; $findme3 = '</span>';  // check if link correct $rightlink = strpos($link, $findme1); // if link correct   if ($rightlink !== false) {     // html link     $html = file($link);      // iterate through html     foreach ($html $i => $line)     {         // set title         if($i == 640) $title = htmlentities($line);          // set requester         if($i==669) $requester = htmlentities($line);          if($i==678)         {             // modify line , save reward             $line_modified = str_replace($findme2, '', $line);             $line_modified = str_replace($findme3, '', $line_modified);             $reward = htmlentities($line_modified);         }          // set qualifications         if($i==711) $q = htmlentities($line);     } 

try php simple html dom parser, it'll make life easy, read documentation , whatever want do. if familiar jquery it's in grip. @ example given below

include('simple_html_dom.php'); $html = file_get_html('https://requester.mturk.com/'); foreach($html->find('a') $link){     echo $link . '<br />'; } 

that code fetches data https://requester.mturk.com , prints links using foreach loop. code self descriptive think.