如何獲得受PHP中MySQL查詢影響的行？

Question

從PHP，如果我使用mysqli_stmt_execute執行以下查詢：

UPDATE users 
SET hair_color = 'brown' 
WHERE height > 180;

如何確定表中的哪些行實際上已更新並受到查詢的影響？

請注意，我希望僅在PHP中解決此問題，而不使用DB觸發器等。特別是，出現此問題是因為我們正試圖從數據庫中刪除所有觸發器。

Answer 1

$string="UPDATE users SET hair_color = 'brown' WHERE height > 180";
//Update Query String which will perform in update query

$update_query=mysqli_query($connection,$string);
//by this we are actually running our update queries.    

$total_affected_rows=mysqli_affected_rows($con); 
//By this line you will get total affected rows

//if you need to select and show all the affected rows then you can make a 
//query

$sql=mysqli_query($con,"SELECT * FROM users WHERE height > 180");

Answer 2

您可以使用mysqli_stmt_affected_rows()獲取受影響的行

在這里檢查http://php.net/manual/en/mysqli-stmt.affected-rows.php