How thinkphp avoids SQL injection attacks

1. What is a SQL injection attack?

SQL injection attack is a method often used by hackers to attack websites. SQL injection attacks refer to attackers modifying, inserting or deleting data in the database through maliciously constructed SQL statements. In most cases, WEB applications are based on parameters entered by the user. Developers do not perform effective filtering and character escaping, allowing attackers to gain permissions by entering malicious strings.

2. SQL injection vulnerabilities in ThinkPHP

There were some SQL injection vulnerabilities in earlier versions of ThinkPHP, but this is a commonly used framework. For example, ThinkPHP versions 3.0.0~3.1.1 have a syntax called coherent operations. An attacker can inject malicious code into the database by planting special characters in this syntax. In addition, ThinkPHP will also automatically convert URL parameters into corresponding SQL statements, which provides an opportunity for injection attacks.

3. Measures to prevent SQL injection attacks

1. Filtering user input

During the development process , the parameters entered by the user should be filtered to exclude content that may contain injected attack code. If you are not sure whether the entered parameters have security risks, you should escape them, such as escaping a single quote into two single quotes, which can effectively avoid SQL injection attacks.

2. Use parameterized query

Parameterized query is a safe way to implement database query. Its basic idea is to use the user’s input data It is separated from the SQL statement so that the data entered by the user will not affect the SQL statement. Therefore, SQL injection attacks can be avoided by using parameterized queries.

3. Use ORM tools

ORM framework (Object-Relational Mapping) is a mapping between relational databases and object-oriented languages Technology that can convert database query operations into object operations. Using an ORM framework can effectively avoid SQL injection attacks because the ORM framework can automatically escape and filter query statements.

4. Update ThinkPHP version

It is recommended that you upgrade the old version of ThinkPHP to the latest version as soon as possible. Because as technology develops, the ThinkPHP development team will fix vulnerabilities in old versions and add new security measures to ensure the security of the framework.

4. Safety Awareness Cultivation

In addition to the above measures, the cultivation of security awareness is also very important. Developers should strengthen their security awareness, learn relevant security knowledge, understand web security attack and defense technologies, and improve security awareness, so that they can better protect their websites.

What is thinkphp

thinkphp is a free development framework that can be used to develop front-end web pages. The earliest thinkphp was created to simplify development. Thinkphp also follows the Apache2 protocol. It was originally Evolved from Struts, we also make use of some good foreign framework patterns, use object-oriented development structures, and are compatible with many tag libraries and other patterns. It can develop and deploy applications more conveniently and quickly, and of course it is not just enterprise-level applications. , any PHP application development can benefit from the simplicity, compatibility and speed of thinkphp.

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