Transaction operations in ThinkPHP6

Transaction operation may be a bit unfamiliar to many newcomers. Even after reading the transaction operation part in the official ThinkPHP6 manual, they still don’t understand it. Next, I will introduce the transaction operations to you.

1. Let’s talk about the usage scenarios first.

Suppose I need to transfer 1,000 yuan to a friend. The normal business logic is:

1. The bank deducts 1,000 yuan from my account

2. The bank added 1,000 yuan to the friend's account.

If everything goes well, the transfer is successful!

Then the question is, if I accidentally enter the wrong bank account and the bank cannot find the bank account I entered, but the money has been deducted from my account at this time, what should I do?

We often say in our lives, "If the money cannot be transferred, the bank will return it." This is what it means.

2. Transaction operation definition.

So through the above example, we understand what a transaction operation is. A transaction refers to a logical group of operations. Each unit that makes up this group of operations either all succeeds or all fails.

Just like the money transfer example above, either the transfer is successful, if not, I need to return my money, which means returning to the initial state, also called "rollback".

3. Transaction operations in ThinkPHP6.

We understand the usage scenarios of transaction operations, so how to use them in ThinkPHP6?

Db::transaction(function () {
    Db::table('think_user')->insert(['name'=>'aaa']);
    Db::table('think_user')->delete(1);
});

Let's look at the above example. The deletion operation will only be performed when we insert the record successfully. If the insertion is unsuccessful, the deletion operation will not be performed.

For example, if we deliberately write a wrong field name1, the field name1 does not exist in the data table, and the insertion program will not be executed successfully, then the following delete statement is no problem, but it will still not be executed.

In addition, we can also manually control transactions. Look at the following code:

// 启动事务
Db::startTrans();
try {
    Db::table('think_user')->find(1);
    Db::table('think_user')->delete(1);
    // 提交事务
    Db::commit();
} catch (\Exception $e) {
    // 回滚事务
    Db::rollback();
}

The above is the content of transaction operations in ThinkPHP6. Through the examples in our real life, everyone can have a good understanding of transaction operations.

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