How php escapes a specified character

This article mainly explains "php how to escape the specified characters", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's take you to learn "how to escape the specified characters in php"!

php will specify the method of character escape: 1. Create a PHP sample file;2. Define the string;3. Escape the string by the "addslashes($str);" method.

Operating environment: Windows 7 system, PHP 7.1 version, DELL G3 computer

Php how to escape the specified character?

First of all, we can understand briefly what is an escape character? What's the point?

An escape character is a special character constant. Escape characters begin with a backslash "\" followed by one or more characters. Escape characters have a specific meaning, different from the original meaning of the character, so it is called "escape" characters.

Use of escape characters:

1: Turn ordinary characters into special uses, such as the back key, enter key, etc.

2: Used to convert a special meaning character back to its original meaning.

3: Sensitive characters are escaped using escape characters (functions) before data is written to the database. Avoid website injection attacks.

Then we may encounter operations that require a large amount of data to escape during PHP development projects.

Here we will introduce you through a simple code example PHP escape restore string method.

I. Examples of functions used to escape character strings: