regex - php, strpos extract digit from string -

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i have huge html code scan. until have been using preg_match_all extract desired parts it. problem start was extremely cpu time consuming. decided use other method extraction. read in articles preg_match can compared in performance strpos. claim strpos beats regex scanner 20 times in efficiency. thought try method dont know how started.

lets have html string:

<li id="ncc-nba-16451" class="che10"><a href="/en/star">23 - star</a></li> <li id="ncd-bbt-5674" class="che10"><a href="/en/moon">54 - moon</a></li> <li id="ertw-cxda-c6543" class="che10"><a href="/en/sun">34,780 - sun</a></li>

i want extract number each id , text (letters) content of a tags. preg_match_all scan:

'/<li.*?id=".*?([\d]+)".*?<a.*?>.*?([\w]+)<\/a>/s'

here can see result: link

now if want replace method strpos functionality how approach like? understand strpos returns index of start match took place. how can use to:

  • get possible matches, not one
  • extract numbers or text desired place in string

thank , tips ;)

using dom 

$html = ' <html> <head></head> <body> <li id="ncc-nba-16451" class="che10"><a href="/en/star">23 - star</a></li> <li id="ncd-bbt-5674" class="che10"><a href="/en/moon">54 - moon</a></li> <li id="ertw-cxda-c6543" class="che10"><a href="/en/sun">34,780 - sun</a></li> </body> </html>';   $dom_document = new domdocument();  $dom_document->loadhtml($html);  $rootelement = $dom_document->documentelement;  $getid = $rootelement->getelementsbytagname('li'); $res = []; foreach($getid $tag) {    $data = explode('-',$tag->getattribute('id'));    $res['li_id'][] = end($data); } $getnode = $rootelement->getelementsbytagname('a'); foreach($getnode $tag) {    $res['a_node'][] = $tag->parentnode->textcontent; } print_r($res);

output :

array (     [li_id] => array         (             [0] => 16451             [1] => 5674             [2] => c6543         )      [a_node] => array         (             [0] => 23 - star             [1] => 54 - moon             [2] => 34,780 - sun         )  )

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