xml - DOMXPath/PHP - Get a value only after specific occurrence -

guys i'm parsing url html dom elements.

here code:

<?php $url = 'http://www.sportsdirect.com/nike-satire-mens-skate-shoes-242188?colcode=24218822';  libxml_use_internal_errors(true); $dom = new domdocument;   $dom->loadhtmlfile($url);   $xp = new domxpath($dom); $qry = '//script[starts-with(normalize-space(.), "var colourvariantsinitialdata")]';  $rawtxt = $xp->query($qry)->item(0)->nodevalue;   $jsonstart = strpos($rawtxt, '['); $jsonend = strrpos($rawtxt, ']');  $collections = json_decode(substr($rawtxt, $jsonstart, $jsonend - $jsonstart + 1));  foreach ($collections[1]->sizevariants $item) {     $sizename = $item->sizename;     $priceunformated = $item->prodsizeprices->sellprice;      $find = array('£');     $replace   = array('');     $price = str_replace($find, $replace, $priceunformated);      echo "sizename: <b>$sizename</b> - price: <b>$price</b><br>";  } 

this code fetching "text" script output source. here complete text script: http://pastebin.com/fwk9z8cp

my code giving following result:

sizename: 7 (41) - price: 27.00 sizename: 8 (42.5) - price: 36.00 sizename: 9 (44) - price: 36.00 sizename: 9.5 (44.5) - price: 36.00 sizename: 11 (46) - price: 36.00 

my question is:

how can result specific sizename, example let's sizename 7 (41) ?

thanks in advance!

$specific have string want find. change foreach in code this:

$specific = '7 (41)';  foreach ($collections[1]->sizevariants $item) {     $sizename = $item->sizename;  if(trim($sizename) == trim($specific)) {      $priceunformated = $item->prodsizeprices->sellprice;      $find = array('£');     $replace   = array('');     $price = str_replace($find, $replace, $priceunformated);      echo "sizename: <b>$sizename</b> - price: <b>$price</b><br>"; } }