How to set character set in phps

When developing with PHP, we sometimes need to set the character set to correctly display and process Chinese characters. In this article, we will explain how to set the character set in PHP code.

1. Specify HTTP header information

We can tell the browser how to handle the character set of the page by specifying HTTP header information. The following code can set the character set of the page to UTF-8:

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

2. Set the character set in HTML

In HTML, we can use the meta tag to specify character set. The following code can set the character set of the page to UTF-8:

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

3. Set the character set in PHP

We can use PHP's built-in function ini_set() to Set character set. The following code can set the character set to UTF-8:

ini_set("default_charset", "utf-8");

4. Set the character set in the database

If your PHP application needs to connect to the database, you need to ensure The character set in the database matches the character set in PHP. The following are some common database character set settings:

• MySQL: Use the following code to set the character set to UTF-8 when connecting to the database:

mysqli_set_charset($conn,"utf8");

• Oracle : Use the following code to set the character set to UTF-8 when connecting to the database:

oci_connect("username", "password", "//host:port/SID", "AL32UTF8");

• Microsoft SQL Server: Use the following code to set the character set to UTF-8 when connecting to the database:

$connectionInfo = array("Database"=>"dbName", "UID"=>"username", "PWD"=>"password", "CharacterSet" => "UTF-8");
$conn = sqlsrv_connect($serverName, $connectionInfo);

Summary

This article introduces how to set the character set in PHP code, including specifying HTTP header information, setting the character set in HTML, and using PHP's built-in function ini_set() to set characters set and how to set the character set in the database. When developing PHP, you need to pay attention to the character set settings to ensure that Chinese characters are displayed and processed correctly.

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