ช่วยเขียนเชื่อมเงื่อนไข $condition ลงใน $sql ให้หน่อย ปูเขียนออกมาแล้วมันไม่ออก

if($_GET['lang']=='en'){
	require("function_en.inc.php");
	$page=(isset($_GET['page']))? intval($_GET['page']) : 1; 
	$limit_end=4; 
	$limit_start=($page-1)*$limit_end;  
	$send =""; 
	
	if(isset($_GET["id"]) and $_GET["id"] !=""){ 
	$send = "id_product=".$_GET["id"]; 
	$condition= "WHERE tb_product.id_product  = tb_product_image.id_product  AND tb_product.status = 'Yes' AND tb_product.type = 'WomenWD'  AND tb_product_image.status_img = '1' '".$_GET["id"] ."'";} 	// บรรทัดนี้
		
	$sql="SELECT tb_product.*,tb_product_image.* FROM tb_product,tb_product_image "."$condition ";  // บรรทัดนี้
	$query =mysql_query($sql." LIMIT ".$limit_start.",".$limit_end, $conn); 
	$count = mysql_num_rows($query); 
	$total = mysql_num_rows(mysql_query($sql, $conn)); 
	//echo $sql;

	$sql="SELECT tb_product.*,tb_product_image.* FROM tb_product,tb_product_image  WHERE tb_product.id_product  = tb_product_image.id_product  AND tb_product.status = 'Yes' AND tb_product.type = 'WomenWD'  AND tb_product_image.status_img = '1' ";

SELECT tb_product.*,tb_product_image.* FROM tb_product,tb_product_image