Let’s talk about the implementation and precautions of the delete function in ThinkPHP5.0

As times change, programming languages ​​and development frameworks are constantly updated and improved. For example, in recent years, with the rapid development of the Internet, the application scenarios of the PHP language have become more and more widespread. Among the PHP frameworks, ThinkPHP is the one most familiar to many developers. Today, let’s talk about the implementation methods and precautions of the delete function in ThinkPHP5.0.

1. Basic introduction to ThinkPHP5.0

ThinkPHP5.0 is an important version of the ThinkPHP framework and an important achievement in the field of PHP programming. ThinkPHP5.0 has made relatively large improvements and upgrades on the basis of the original ThinkPHP4.0. This framework contains almost all the mainstream features of PHP, and also has a complete set of development documents and cases, which is very suitable for PHP enthusiasts to carry out in-depth learning and development.

2. Basic operations of deleting data

In the common operations of adding, deleting, modifying and checking, deleting data is also an aspect that should be involved. In ThinkPHP5.0, it is very simple to implement the deletion operation, just use the delete() method. Let's take a look at the detailed implementation of this method:

//删除数据
Db::name('table_name')->where(array('id' => 1))->delete();

In the above code, Db is the database operation object of the current table, and name specifies the table name of the current operation. Match the data with id 1 through where, and then let the delete() method complete the deletion operation.

Of course, because the deletion operation is extremely dangerous, the use of the delete() method needs to be treated with caution. When we use the delete() method, we need to pay attention to the following points:

• Once the deletion of data is completed, it is irreversible. Please confirm that the correct data has been selected before performing the deletion operation;
• Before performing the deletion operation, you need to use the where() method to perform the matching operation. The where() method uses an array as a parameter. The implementation of the array is as follows: array('field name' => 'value');
• When you need to delete data in the form of an array, you need to use whereIn( )method.

3. Parameters of the delete() method

When we use the delete() method, in addition to the where() and whereIn() methods, we can delete In addition to selecting the location of the data, you can also achieve the goal through the parameters of the method. Let's take a look at the parameters of the delete() method:

//指定要删除的数据
Db::name('table_name')->delete($ids);

$ids in the above code is the location of the data we want to delete. If you want to delete multiple pieces of data, you need to put their locations into an array. If you want to delete a single piece of data, you can directly use the following method:

//删除单条数据
Db::name('table_name')->where(['id' => '1'])->delete();

4. Summary

Through the introduction of the above article, we learned that data deletion can be achieved in ThinkPHP5.0 Methods and precautions for use. Deletion operations require a high degree of caution. Remember to be more careful when using them to prevent data loss caused by misuse. In addition, we also need to clearly know the parameters required by the delete() method, how to use the parameters, and the characteristics of the parameters. In this way, when we really need to delete data, we can complete the operation more accurately and achieve the best results.

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