How to find a URL from a content by PHP?

need a simply preg_match, which will find "c.aspx" (without quotes) in the content if it finds, it will return the whole url. As a example

$content = '<div>[4]<a href="/m/c.aspx?mt=01_9310ba801f1255e02e411d8a7ed53ef95235165ee4fb0226f9644d439c11039f%7c8acc31aea5ad3998&amp;n=783622212">New message</a><br/>';

now it should preg_match "c.aspx" from $content and will give a output as

"/m/c.aspx?mt=01_9310ba801f1255e02e411d8a7ed53ef95235165ee4fb0226f9644d439c11039f%7c8acc31aea5ad3998&n=783622212"

The $content should have more links except "c.aspx". I don't want them. I only want all url that have "c.aspx".

Please let me know how I can do it.

From stackoverflow

• You use DOM to parse HTML, not regex. You can use regex to parse the attribute value though.

  Edit: updated example so it checks for c.aspx.

  $content = '<div>[4]<a href="/m/c.aspx?mt=01_9310ba801f1255e02e411d8a7ed53ef95235165ee4fb0226f9644d439c11039f%7c8acc31aea5ad3998&amp;n=783622212">New message</a>
  
  <a href="#bar">foo</a>
  
  <br/>';
  
  $dom = new DOMDocument();
  $dom->loadHTML($content);
  
  $anchors = $dom->getElementsByTagName('a');
  
  if ( count($anchors->length) > 0 ) {
      foreach ( $anchors as $anchor ) {
          if ( $anchor->hasAttribute('href') ) {
              $link = $anchor->getAttribute('href');
              if ( strpos( $link, 'c.aspx') ) {
                  echo $link;
              }
          }
      }
  }
  

  Ken Keenan : There is also a PHP function, `parse_url()` that you can use once you've extracted the URL from the href attribute

  SHAKTI : Wow, Thanks, It really works. Thank you very very much. :)

  karim79 : @meder - voted up, and seriously, I love you. There is *no* regex solution to this problem.

• If you want to find any quoted string with c.aspx in it:

  /"[^"]*c\.aspx[^"]*"|'[^']*c\.aspx[^']*'/
  

  But really, for parsing most HTML you'd be better off with some sort of DOM parser so that you can be sure what you're matching is really an href.