Need little help converting fopen to curl please

Hello, my current host has disabled fopen for security purposes, I have a search escript which retrieves outside server results, wich now is not working anymore, I will appreciate if someone can help me convert this file or point me to the right direction to convert it to curl instead of fopen which is currently is.

Thank you in advanced, any help will be much appreciated.

<?
	//DMOZ
	$DELAY = 5;
	$DMOZ_URL = "http://search.dmoz.org/cgi-bin/search?";
	$TRY_CONNECTIONS = 20;
	$SEARCHFEED_URL = "http://www.searchfeed.com/rd/feed/XMLFeed.jsp?";
	$RAGING_URL = "http://www.altavista.com/web/res_text?avkw=xytx&amb=txt&kls=0&kgs=0";
	//microseconds
	$TRY_PAUSE = 5;
	
	function Pause($delay = 10){
		$ts = explode(" ", microtime());
		$start_t = $ts[0] + $ts[1]*1000;
		do{
			$ts = explode(" ", microtime());
			$c_t = $ts[0] + $ts[1]*1000;
		}while(($c_t - $start_t)<=$delay);
	}	
	
	
	function GetDMOZResults(&$results, $ss, $start = 1, $num = 1){
		global $DMOZ_URL;
		global $TRY_CONNECTIONS, $TRY_PAUSE;
		$results = array(
								"0" => array(
								"title"=>"",
								"link"=>"",
								"summary"=>"",
								"category"=>""
							 )
		);
		$link = $DMOZ_URL."search=".urlencode($ss)."&start=".$start;
                
		$cc = 1;
		while(!($fh = @fopen($link, 'r'))){
			if($cc==$TRY_CONNECTIONS) break;
			$cc++;
			Pause($TRY_PAUSE);
		}
		if($fh)
		{
			$buff = "";
			$tmp = "";
			$tmp_arr = array();
			while($buff = fread($fh, 256)){
				$tmp.=$buff;
			}
			fclose($fh);
                       	$sc = 0;
			if(preg_match("/Open Directory Sites.*?(\d+?)\)/", $tmp, $m1)){
				$sc = $m1[1];
                        }        
			$tmp = preg_replace("/^.*Open Directory Sites/", "", $tmp);
			$tmp = preg_replace("/<img.*?>/", "", $tmp);
			$count = 1;
			if(preg_match_all("/<li>(<a href=\"http:.*?)(?:<li>|<\/ol>)/s", $tmp, $matches)){
				foreach($matches[1] as $st){
					if($count<=$num&&$count<=$sc){
                                        if(preg_match("/^<a href=\"(.*?)\">(.*?)<\/a>(.*?)<br>.*?<a href=\".*?\">(.*?)<\/a>/s", $st, $m2)){
							$linkurl = $m2[1];
							$title = $m2[2];
							$summary = $m2[3];
							$category = $m2[4];
						}
//						print $count." - ".$title."<hr>";
						$results[$count] = array(
							"title"=>$title,
							"link"=>$linkurl,
							"summary"=>$summary,
							"category"=>$category
						);
						$count++;
					}else{
						break;
					}
				}
				return $sc;
			}else return "";
		}else{
			return "";
		}
	}
	
	
	function PPCParseRecord_External($type, $record, $counter, $page, $rpp, $hs, $ss, $rest){
		global $PPC_RESULTS_PART, $CLICK_SCRIPT, $CLICK_TARGET, $MAIN_URL;
		
			$tmp = ReadTemplate($PPC_RESULTS_PART);
			$shl = "";
			if($rest=="dmoz"||$rest=="msn"){
				if(preg_match("/(http:\/\/(?:[-\w]\.?)+\/??)/", $record["link"], $mm)){
					$shl = $mm[1];
					$cat = $record["category"];
				}
			}elseif($rest=="revenue"){
				$shl = $record["category"];
				$cat = "n/a";
			}
			
			$vars = array(
					"logo"=>"",
					"counter"=>$counter,
					"id"=>"",
					"title"=>"<a href=\"".$record["link"]."\" target=\"_blank\">".$record["title"]."</a>",
					"summary"=>($hs==0?stripslashes($record["summary"]):"").($record["bid"]!=""?"<br><i>Bid: ".$record["bid"]."</i>":""),
					"link"=>$shl,
					"category"=>$cat
			);
			return ParseTemplate($tmp, $vars);
			
	}
	
//END OF DMOZ

 

 

//SEARCHFEED XML FEEDS
	function GetSearchFeedResults(&$results, $ss, $start = 1, $num = 1){
		global $SEARCHFEED_URL, $TRY_CONNECTIONS, $TRY_PAUSE;
		global $SEARCHFEED_CID;
		$results = array(
								"0" => array(
								"title"=>"",
								"link"=>"",
								"summary"=>"",
								"category"=>"",
								"bid"=>""
							 )
		);
		//$SEARCHFEED_CID = GetSettings("searchfeed_id");
		$link = $SEARCHFEED_URL."cat=".urlencode($ss)."&pID=".$SEARCHFEED_CID."&IP=".getenv("REMOTE_ADDR")."&page=".($start)."&nl=".$num;
		$cc = 1;
		while(!($fh = @fopen($link, 'r'))){
			if($cc==$TRY_CONNECTIONS) break;
			$cc++;
			Pause($TRY_PAUSE);
		}
		if($fh)
		{
			$buff = "";
			$tmp = "";
			$tmp_arr = array();
			while($buff = fread($fh, 256)){
				$tmp.=$buff;
			}
			fclose($fh);
/*
							print "SF working...<hr>";
							$ft = fopen("temp2.txt","a");
							fwrite($ft, "\n\n$link\n\n");
							fwrite($ft, $tmp);
							fclose($ft);
*/
			$sc = $num;
			$count = 1;
			if(preg_match("/<Listings>(.*)<\/Listings>/is", $tmp, $matches)){
				$recs = $matches[1];
					if(preg_match("/<Count>(.*?)<\/Count>/is", $recs, $m1)){
						$sc = $m1[1];
					}
					if(preg_match_all("/<Listing>(.*?)<\/Listing>/is", $recs, $m1)){
						foreach($m1[1] as $tt){
							if(preg_match("/<URI>\s*(.*)\s*<\/URI>/is", $tt, $m2)){
								$linkurl = $m2[1];
							}
							if(preg_match("/<URL>\s*(.*)\s*<\/URL>/is", $tt, $m2)){
								$category = $m2[1];
							}
							if(preg_match("/<Title>\s*<!\[CDATA\[(.*)\]\]>\s*<\/Title>/is", $tt, $m2)){
								$title = $m2[1];
							}
							if(preg_match("/<Description>\s*<!\[CDATA\[(.*)\]\]>\s*<\/Description>/is", $tt, $m2)){
								$summary = $m2[1];
							}
							if(preg_match("/<Bid>\s*(.*)\s*<\/Bid>/is", $tt, $m2)){
								$bid = $m2[1];
							}
/*
							$ft = fopen("temp.txt","a");
							fwrite($ft, "$title\n$summary\n$linkurl\n$category\n$bid\n---------------------------\n");
							fclose($ft);
*/
							$results[$count] = array(
								"title"=>$title,
								"link"=>$linkurl,
								"summary"=>$summary,
								"category"=>$category,
								"bid"=>$bid
							);
							$count++;
						}
					}
				return $sc;
			}else return "";
		}else{
			return "";
		}
	}
//END OF SEARCHFEEDS XML FEEDS

//RAGING FEEDS

	function GetRAGINGResults(&$results, $ss, $start = 1, $num = 1){
		global $RAGING_URL;
		global $TRY_CONNECTIONS, $TRY_PAUSE;
		$results = array(
								"0" => array(
								"title"=>"",
								"link"=>"",
								"summary"=>"",
								"category"=>""
							 )
		);
      //		$link = $RAGING_URL."&q=".urlencode($ss)."&stq=".$start;
 		$link = "http://www.altavista.com/web/results?q=".urlencode($ss)."&stq=".$start;
 		
		$cc = 1;
		while(!($fh = @fopen($link, 'r'))){
			if($cc==$TRY_CONNECTIONS) break;
			$cc++;
			Pause($TRY_PAUSE);
		}
		if($fh){
			$buff = "";
			$tmp = "";
			$tmp_arr = array();
			while($buff = fread($fh, 256)){
				$tmp.=$buff;
			}
			fclose($fh);
		}
		$sc = 0;
/*
		if(preg_match("/found ([\d\,]+) results\s+<\/a>/i", $tmp, $m1)){
			$sc = $m1[1];
		}
*/
//new		
			if(preg_match("/found (.*?) results/i", $tmp, $m1)){
			$sc = $m1[1];
			$sc = preg_replace("/,/","",$sc);
                 }
//new                 
		$str_pos = strpos($tmp,"found $sc results") + 15; 
		$tmp = substr($tmp,$str_pos);
 		
		
//		if (preg_match_all("/<a\n*\s+href\s*=\"\/r\?ck_sm=([^\"]*)[^>]*>([^<]*)<\/a><br><\/b><span class=s>(.*)<br>/",$tmp,$array))
		if (preg_match_all("/<br class='lb'><a class='res' href=\'(.*?)\'>(.*?)<\/a><br><span class=s>(.*?)<br>/si",$tmp,$array))
		{
			$i=0;
			while($i<count($array[1]))
			{
 //				$linkurl="http://www.altavista.com/r?ck_sm=".$array[1][$i];
				$linkurl=$array[1][$i];
	             		$title=$array[2][$i]; 
				$summary=$array[3][$i];
				$category = "n/a"; 
				$results[$i+1] = array(
					"title"=>$title,
					"link"=>$linkurl,
					"summary"=>$summary,
					"category"=>$category
				);
				$i++;  
/* echo "$title <br>"; 
echo "$linkurl <br>"; 
echo "$summary <br>"; 
*/				
			}
		}
		return $sc;
	}

?>

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