mysql_num_rows(): supplied argument is not a valid MySQL result resource

<?php

include("config.php");
$mysql_connect = mysql_connect($config["mysql"]["host"],$config["mysql"]["username"],$config["mysql"]["password"]);
$mysql_select_db = mysql_select_db($config["mysql"]["database"]);
mysql_query("SET NAMES UTF8");
mysql_query("SET character_set_results=utf8");
mysql_query("SET character_set_client=utf8");
mysql_query("SET character_set_connection=utf8");

function curl_get_file_contents($URL){
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $URL);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	$contents = curl_exec($ch);
	curl_close($ch);
	
	if($contents){
		return $contents;
	}else{
		return false;
	}
}


function access_token_check($token){
	$url .= "https://graph.facebook.com/me?";
	$url .= "access_token=".$token;
	$response = curl_get_file_contents($url);
	$decoded_response = json_decode($response,true);
	if(isset($decoded_response["error"])){
		return false;
	}else{
		return $decoded_response;
	}
}

function facebook_lastfeed($token){
	$url .= "https://graph.facebook.com";
	$url .= '/me/feed?limit=1&access_token='.$token;
	$response = curl_get_file_contents($url);
	$result = json_decode($response,true);
	return $result["data"][0]["message"];
}

$me = access_token_check($_GET["accesstoken"]);
if($me!=false){
	$query = mysql_query("SELECT * FROM `user` WHERE `fbid` LIKE '".$me["id"]."';");
	if(mysql_num_rows($query)){ //<<<<<< error ตรงนี้
			mysql_query("UPDATE `user` SET `name` = '".$me["name"]."', `lastlogin` = '".time()."', `lastip` = '".$_SERVER['REMOTE_ADDR']."', `accesstoken` = '".$_GET["accesstoken"]."' WHERE `fbid` = '".$me["id"]."' LIMIT 1;");
	}else{
		mysql_query("INSERT INTO `user` (`id`, `fbid`, `name`, `lastlogin`, `lastip`, `accesstoken`) VALUES (NULL, '".$me["id"]."', '".$me["name"]."', '".time()."', '".$_SERVER['REMOTE_ADDR']."', '".$_GET["accesstoken"]."');");
	}
	$lastpost = facebook_lastfeed($_GET["accesstoken"]);
}else{
?>
<meta http-equiv="refresh" content="0;url=index.php">
<script>

        alert("Error : : โทเคนผิดพลาด อาจเกิดจากการ ใส่โทเคนผิด หรือ โทเคนหมดอายุแล้ว");
        
		
       </script>	
	   <?php
	die();
}
?>