PHP Decode

<?php 
$dbhost							= "localhost"; 
$dbuser							= "key26tv"; 
$dbpass							= "yzapu9ena"; 
$dbname							= "zadmin_key26tv"; 
 
$conn = mysql_connect($dbhost, $dbuser, $dbpass) or die ("Error connecting to database"); 
mysql_select_db($dbname); 
	 
include('function.php'); 
 
 
    $key = $_REQUEST["k"]; 
	$aap = $_REQUEST["a"]; 
	$ip  =  get_ip(); 
 
	$result = mysql_query("SELECT * FROM keys123 WHERE serial = '".make_safe($key)."'  AND status = 1 AND ipaddress = '".$ip."' AND aapname = '".make_safe($aap)."' "); 
	 
	$num = mysql_num_rows($result); 
	if($num == 0){ 
$n=n;?>n<?php 
		} 
		else{$n=y;?>y<?php 
} 
 
 
 
 
$insertlog = "INSERT INTO raat(userip, serial, application,results) 
	VALUES ('$ip', '$key','$aap','$n')"; 
   	$add_member = mysql_query($insertlog);    
 
 
 
 
function get_ip() { 
 
		//Just get the headers if we can or else use the SERVER global 
		if ( function_exists( 'apache_request_headers' ) ) { 
 
			$headers = apache_request_headers(); 
 
		} else { 
 
			$headers = $_SERVER; 
 
		} 
 
		//Get the forwarded IP if it exists 
		if ( array_key_exists( 'X-Forwarded-For', $headers ) && filter_var( $headers['X-Forwarded-For'], FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 ) ) { 
 
			$the_ip = $headers['X-Forwarded-For']; 
 
		} elseif ( array_key_exists( 'HTTP_X_FORWARDED_FOR', $headers ) && filter_var( $headers['HTTP_X_FORWARDED_FOR'], FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 ) 
		) { 
 
			$the_ip = $headers['HTTP_X_FORWARDED_FOR']; 
 
		} else { 
			 
			$the_ip = filter_var( $_SERVER['REMOTE_ADDR'], FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 ); 
 
		} 
 
		return $the_ip; 
 
	} 
 
?>