PHP: URL fetch @Jakob

<form action="" method="get">
  	<!-- search from -->
		<div class="label">
		  <label for="suche.searchFrom">Tender from</label>
		</div>
		<div class="value">
		  <input id="suche.searchFrom" name="dato" value="10/03/2012" class="datepicker" type="text" />
		</div>
		<!-- produktart selection -->
		<div class="label">
		  <label for="suche.produktartSelection">Productkind</label>
		</div>
		<div class="value">
		<input name="produkt" value ='1' > (1=Primärregelleistung, 2=Sekundärregelleistung, 3=Minutenreserveleistung)
		  
		</div>
		<!-- limits -->
		<div class="label">
		  <label for="suche.resultLimit">next</label>
		</div>
		<div class="value">
		  <input name="limit" value ='100' >
		                           </div>
		<!-- button -->
		<input name="submit" value='ok' class="navButtonSmall buttonLeft" type="submit" />
	</form> 
         
<?php
	if(isset($_GET["dato"])){
	$ch = curl_init('https://www.regelleistung.net/ip/action/ausschreibung/public/ip/action/ausschreibung/public');
	curl_setopt($ch, CURLOPT_POST, true);
	curl_setopt($ch, CURLOPT_POSTFIELDS, array('suche.searchFrom' => $_GET["dato"], 'suche.resultLimit'=>$_GET["limit"],'suche.produktartSelection' => $_GET["produkt"]));
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	
	$response = curl_exec($ch);

	$regex='|<a.*?href="(.*?)"|';
	preg_match_all($regex,$response,$parts);
	$links=$parts[1];
	
	// Pick only download links
	foreach($links as $link){
		if (strpos($link,'download') !== false) {
		   $dwlink[] = " https://www.regelleistung.net".$link."<br><br>";
		}		
	}

	unset($dwlink[0]); // Remove "List of tenders" download
	foreach($dwlink as $index=>$link){
		echo $link;
	}
}
?>