Always returning 0, Google SERP Checker - php

Question

My function searches google for the specific keyword and then checks for the site and then returns the what position it is on google (its for my seo dashboard) but it always return's 0, hopefully some fresh eyes can find the faults
<?php
function GoogleSerp($searchquery, $searchurl){
if(!empty($searchquery) && !empty($searchurl))
{
$query = str_replace(" ","+",$searchquery);
$query = str_replace("%26","&",$query);
// How many results to search through.
$total_to_search = 50;
// The number of hits per page.
$hits_per_page = 10;
// Obviously, the total pages / queries we will be doing is
// $total_to_search / $hits_per_page
// This will be our rank
$position = 0;
// This is the rank minus the duplicates
$real_position = 0;
$found = NULL;
$lastURL = NULL;
for($i=0;$i<$total_to_search && empty($found);$i+=$hits_per_page)
{
// Open the search page.
// We are filling in certain variables -
// $query,$hits_per_page and $start.
// $filename = "http://www.google.co.uk/xhtml?q=$query&start=$i&sa=N";
$filename = "http://www.google.co.uk/m?q=$query&num=$hits_per_page&filter=0&start=$i&sa=N";
$file = fopen($filename, "r");
if (!$file)
{
return "error";
}
else
{
// Now load the file into a variable line at a time
while (!feof($file))
{
$var = fgets($file, 1024);
// Try and find the font tag google uses to show the site URL
if(eregi("<span class=\"c\">(.*)</span>",$var,$out))
{
// If we find it take out any <B> </B> tags - google does
// highlight search terms within URLS
$out[1] = strtolower(strip_tags($out[1]));
// Get the domain name by looking for the first /
$x = strpos($out[1],"/");
// and get the URL
$url = substr($out[1],0,$x);
$url = str_replace("/","",$url);
$position++;
// If you want to see the hits, set $trace to something
// if($trace)return($url."<br>");
// If the last result process is the same as this one, it
// is a nest or internal domain result, so don't count it
// on $real_position
if(strcmp($lastURL,$url)<>0)$real_position++;
$lastURL = $url;
// Else if the sites match we have found it!!!
if(strcmp($searchurl,$url)==0)
{
$found = $position;
// We quit out, we don't need to go any further.
break;
}
}
}
}
fclose($file);
}
if($found)
{
$result = $real_position;
}else{
$result = 0;
}
}
return $result;
}
?>

Answer 1

Try urlencode() instead of the two replaces on the query.