如何使用php加上mysql列值

Question

I want to know how can I add or plus the value of a column in MySQL using PHP. I have an input field for price and in my database table, I have created a column named price .

What I want is, when I put some value in the input field (eg. 10) and hit the submit button, it adds this value to the value of price in the database column.

Answer 1

使用更新查询，如下所示：

UPDATE <TABLE_NAME> SET <PRICE_COLUMN> = <PRICE_COLUMN> + $NEW_PRICE WHERE ID = $ID