How to set encoding format in php statement

When writing web applications using PHP, you often need to handle database operations, and the data in the database needs to use encoding formats when storing and transmitting. Therefore, setting the encoding format in PHP is a very important aspect.

PHP can support multiple encoding formats, including UTF-8, GBK, GB2312, etc. When using PHP to connect to a database, the encoding format needs to be set so that the data can be read and stored correctly. Let's take a look at how to set the encoding format of PHP.

1. Set MySQL database encoding

When using the MySQL database, we need to set the encoding format of the MySQL database in the code so that the data can be read and stored correctly. When connecting to the MySQL database, you can use the following statement to set the encoding format:

mysqli_set_charset($conn,"utf8");

Among them, $conn is the object connected to the MySQL database.

2. Set web page encoding

In the web page, the encoding format also needs to be set so that the browser can display the content correctly. Usually the following code is used to set the web page encoding:

<meta charset="utf-8">

Put the above code at the head of the HTML file to set the web page encoding to UTF-8.

3. Set the default encoding of PHP files

In PHP files, you need to set the default encoding in order to process strings correctly. The default encoding can be set in the php.ini file. Open the php.ini file and add the following statement under the [PHP] tag:

default_charset = "utf-8"

This will set the default encoding of PHP files to UTF-8.

4. Set the encoding format of HTTP header information

When processing HTTP header information, you also need to set the encoding format. You can use the following statement in the code to set the encoding format of the HTTP header information:

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

The above statement sets the encoding format of the HTTP header information to UTF-8.

In summary, setting the encoding format is a very important aspect of PHP to ensure that data is read and stored correctly, and that content is displayed correctly in web pages. The above methods can help developers correctly set the encoding format and improve the stability and reliability of Web applications.

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