Backend DevelopmentPHP TutorialDetailed explanation of the reasons and solutions for Chinese garbled characters displayed on PHP web pagesDetailed explanation of the reasons and solutions for Chinese garbled characters displayed on PHP web pages
PHP is a commonly used server-side scripting language, often used to develop dynamic web pages. In the process of web development, we often encounter the problem of garbled Chinese characters, which is caused by inconsistent character encoding. This article will discuss in detail the reasons and solutions for Chinese garbled characters displayed on PHP web pages, and provide specific code examples.
1. Cause analysis
-
Encoding problem of the PHP file itself:
The encoding of the PHP file should be consistent with the server-side environment. If the PHP file is saved in UTF-8 encoding and the server-side environment uses other encodings, the Chinese will be displayed with garbled characters. -
Database encoding setting problem:
When performing database operations, if the character set setting of the database does not match the encoding of the PHP file, Chinese data in the database will appear when accessing it. Garbled characters. -
Web page header character encoding settings:
In the head of the HTML document, the character encoding needs to be set to tell the browser how to parse the character information of the page. If the characters are not set correctly Encoding will also cause the problem of Chinese garbled characters.
2. Solution
1. PHP file encoding settings
Ensure that the PHP file is saved in UTF-8 encoding, which can be set in the editor, such as In Notepad, select "Format" --> "Convert to UTF-8 without BOM" and save the file.
2. Database character set setting
When making a database connection, you can set the database character set. The sample code is as follows:
$db = new mysqli("localhost", "username", "password", "dbname");
$db->query("set names utf8");After setting in this way, the database connection context will Use UTF-8 character set for communication to avoid garbled characters.
3. Web page header character encoding setting
Set the character encoding at the head of the HTML document:
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>PHP中文乱码问题解决方案</title> </head> <body> ... </body> </html>
By setting the meta tag #charset attribute specifies the character encoding of the page as UTF-8 to ensure that the browser correctly parses Chinese characters.
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