Share some possible causes and solutions to PHP garbled characters

PHP garbled characters are a common problem, especially when dealing with Chinese characters. In this article, we will introduce some factors that may cause PHP garbled characters, and how to solve these problems so that our PHP program can process Chinese characters normally.

1. The character set is not unified

A common PHP garbled problem is the confusion of different character sets. We must ensure that all character sets are consistent. This includes specifying character sets in HTML, CSS, JavaScript, and PHP code. In HTML, we can specify the character set by adding the following code in the tag:

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

If we are using a MySQL database, we must also ensure that the character set used when connecting to the database is also the same of. We can set the character set through the following PHP code:

mysqli_set_charset($con,"utf8mb4");

2. Inconsistent encoding

UTF-8 is a universal character encoding that can represent most languages ​​in the world character of. However, some character sets may not use UTF-8 encoding. If our MySQL database uses another encoding, such as GB2312 or BIG5, then we must make the encoding type in the PHP code consistent with the encoding in the database.

3. Output buffer problem

The output of a PHP program is usually cached in memory and then output to the browser. However, if the character set or contents of the buffer are modified before output, the output results may be garbled. We can use the following code to disable the output buffer:

ob_end_clean();

This clears the buffer contents and disables the buffer.

4. Database connection problem

When we retrieve Chinese data from the database, if the connection character set of the PHP program is inconsistent with the database, the data may be garbled. Before connecting to the database, we can use the following PHP code to set the character set:

mysql_query("SET NAMES 'utf8'");

5. Editor issue

Sometimes, the editor of the PHP script may convert Chinese characters Save as a different encoding type, which may result in garbled characters. Therefore, we must ensure that the editor used supports UTF-8 encoding and save the file in UTF-8 format.

The above are some factors that may cause PHP garbled code and how to solve these problems. If we can follow these best practices, our PHP programs can benefit from Chinese characters and handle and display them correctly.

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