每次插入操作后，您必须得到插入的id值。

获取最后一个插入ID的功能是： mysql_insert_id（）

I have a basic data structure for storing recipes. It consists of three tables as below:

Table 1 - Recipes (recipe_id, recipe_name)

Table 2 - Ingredients (ingredient_id, ingredient_name)

Table 3 - Recipe_Ingredients (recipe_id, ingredient_id)

I have come across a problem when adding a new recipe and would like to know the best practice for inserting.

Currently, on submitting the form I insert into the Recipes table, the recipe_id is auto generated. I then insert into the Ingredients table, again the ingredient_id is auto generated. The third step on submit is to then insert into the Recipe_Ingredients table, but how do I get the values of the recipe and ingredient ids that have just been created in order to insert them into the Recipe_Ingredients table?

I currently have separate PHP functions to insert into the Recipes and Ingredients tables.

You have to get the inserted id value after each insert operation.

The function to get the last insert id is: mysql_insert_id()