How to solve the garbled problem in php

In web development, the issue of Chinese character set encoding has always been a troublesome thing. A simple web page contains many characters, including English, numbers, Chinese, etc., and these characters need to be encoded and decoded during the transmission process. However, sometimes we encounter some problems, such as garbled Chinese characters in the web page. At this time, we need to solve this problem by setting the character set of PHP.

1. What is garbled code?

In web development, garbled characters refer to the inconsistency between the character set displayed in the browser and the actual encoding, causing the displayed characters to become incomprehensible characters or garbled characters. There are many reasons for garbled characters. One of the reasons is that the character sets used by the browser and the server are inconsistent. Generally speaking, the Chinese garbled problems we encounter are mainly related to the character set of PHP.

2. Set the PHP character set

In order to solve the problem of Chinese garbled characters, we need to set the PHP character set. In PHP, you can set the character set by setting the header. The specific code is as follows:

header('Content-type:text/html;charset=utf-8');

This line of code will tell the browser that the current web page needs to use the UTF-8 character set to display. Of course, if your web page uses other character sets, you need to replace utf-8 here with the name of the character set you use.

3. Database character set

In the database, the character set also needs to be set. If Chinese data is stored in the database, and the character set of the database is inconsistent with the character set of the web page, then the problem of Chinese garbled characters will occur. We can modify the character set of the database through the following commands:

ALTER DATABASE `database_name` CHARACTER SET utf8 COLLATE utf8_general_ci;

ALTER TABLE `table_name` CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;

These two commands can modify the character set of both the database and the table to utf-8, and also modify the sorting rule to utf8_general_ci. In this way, when we read the data from the database and display it on the web page, there will be no garbled characters.

4. File character set

In addition to setting the PHP character set and database character set, we also need to pay attention to the character set of the web page file. If the character set of the web page file is inconsistent with the actual encoding, it will also cause Chinese garbled characters. Normally, we can set the file character set by adding the following code in the head area:

<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>

This line of code will tell the browser that the character set of the current web page is utf-8. Of course, if your web page file uses other character sets, you need to replace utf-8 here with the name of the character set you use.

In short, it is not a big problem to encounter Chinese garbled characters in web development. As long as we have set up the PHP character set, database character set and file character set, we can easily solve this problem.

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