function strip_html($xml_tag,$xml_data){
	$s1 = "<".$xml_tag.">";
	$s2 = "</".$xml_tag.">";
	$s = $xml_data;
	$s1 = strtolower($s1);
	$s2 = strtolower($s2);
	$L1 = strlen($s1);
	$scheck = strtolower($s);
	if($L1>0){$pos1 = strpos($scheck,$s1);} else {$pos1=0;}
	if($pos1 !== false){
		if($s2 == '') return substr($s,$pos1+$L1);
		$pos2 = strpos(substr($scheck,$pos1+$L1),$s2);
		if($pos2!==false) return substr($s,$pos1+$L1,$pos2);
	}
	return '';
}
$a = "a";
$url = "http://www.streamservice.nl/";
$strip_html = strip_html($url, $a);
echo $strip_html;