计算和比较行查询Mysql PHP

Question

我是PHP的初学者，如果查询的所有行都正确，我希望得到你的帮助：打印一条消息，如果某些或所有行不符合条件，则打印另一条消息。

我需要帮助Qry和PHP sintaxis，我想我需要使用te COUNT，但我现在不知道怎么做。

谢谢。

我的表格名称：oder_product

+-----+-----+-----+-----+-----+------+
| id | item_id | shipping | delivery |
======================================
| 1  |    1    |   YES    |    NO    |  
======================================

======================================
| 2  |    2    |   YES    |   YES    | 
======================================
| 3  |    2    |   YES    |   YES    | 
======================================
| 4  |    2    |   YES    |   YES    | 
======================================
| 5  |    2    |   YES    |   YES    | 
======================================

======================================
| 6  |    3    |   YES    |    NO    | 
======================================
| 7  |    3    |   YES    |   YES    | 
======================================

SELECT * FROM oder_product WHERE shipping=’YES’ AND delivery=’YES’ AND item_id=‘2’;

PHP

If $result=all rows match;
Echo’ All Products match’;

else
Echo’ some products don’t match’;

Answer 1

$sql=SELECT * FROM oder_product WHERE shipping='YES' AND delivery='YES' AND item_id='2';
$result=mysqli_query($con,$sql);

使用mysqli_num_rows（）查找数字

$rowcount=mysqli_num_rows($result);
if($rowcount>0){
echo 'All Products match';
}
else{
echo 'some products don’t match';
 }