For injection, error hints are extremely important. The so-called error tip refers to the correct page and the results of different feedback, the master is very important to this point, which is critical to the accurate evaluation of the injection
Security precautions for PHP injection through the above process, we can understand the principles and techniques of PHP injection, of course, we can also work out the corresponding prevention methods:
The first is the security settings for the
Today I learned the basics about SQL injection from the Internet. The focus of SQL injection is to construct SQL statements, with the flexibility to use SQL
Statement to construct the injection string for the cow ratio. After learning to write a
bSQL Hacker
bSQL Hacker was developed by the Portcullis Lab, bSQL Hacker is an SQL Automatic injection tool (which supports SQL blinds) designed to enable SQL overflow injection of any database. The bSQL hacker are used by people who
Programmers write code with TDD (test-driven development): Before implementing a feature, you write a test case and then write the code to run it through. In fact, when the hacker SQL injection, the same is a TDD process: they will try to let the
PHP is a powerful but fairly easy to learn server-side scripting language that even inexperienced programmers can use to create complex, dynamic Web sites. However, it often has many difficulties in achieving the secrecy and security of Internet
There are three main types of error hints, logical and grammatical, and script run errors. One: Logic error Simple example is 1=1 1=2 these two, 1=1 and 1=2 page different principle is what? Take $sql = "SELECT * from news where Id=$_get[id]"
Attack in this series, we will explore comprehensively how to block SQL injection attacks in the PHP development environment and give a specific development example.
first, the introduction
PHP is a powerful but fairly easy to learn
For injection, error hints are extremely important. The so-called error tip refers to the correct page and the results of different feedback, the master is very important to this point, which is critical to the accurate evaluation of the injection
For injection, error hints are extremely important. The so-called error tip refers to the correct page and the results of different feedback, the master is very important to this point, which is critical to the accurate evaluation of the injection
1. The MAGIC_QUOTES_GPC option in the PHP configuration file php.ini is not turned on and is set to off2. Developers do not check and escape data typesBut in fact, the 2nd is the most important. I think that it is the most basic quality of a web
4. The nightmare of MD5
Dr. Wang of Shandong University has been doing MD5, we also come to make a mess, we are better than him, do not calculate, haha.
MD5 we have a way around, but not everywhere, PHP MD5 function can not bypass, because you enter
First we are talking about logic errors and grammatical errors:
The biggest difference is that the syntax error does not pass the compiler compiler, logic errors can be passed. Specifically, the grammatical error means that the error violates the
mysql| statement
Because of PHP and MySQL itself, php+mysql injection is more difficult than the ASP, especially in the injection of the structure of the statement is a difficult, this article is mainly borrowed from the okphp BBS v1.3 some
Below is the AJAX submission form data to the warehousing of the overall operation process, I hope this article for the vast number of PHP developers to help, thank you for reading this article PHP Project When we are writing to the database,
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