Chinese characters in php files become garbled

PHP, as a server-side programming language, is usually used to develop Web applications. In PHP files, developers will inevitably use Chinese, but sometimes they will encounter the problem of Chinese garbled characters. This article will introduce some techniques to solve Chinese garbled characters in PHP files.

1. File encoding

When using Chinese in PHP files, you must first pay attention to the encoding format of the file. PHP files usually use UTF-8 encoding, which supports most languages, including Chinese. For example, under the Windows operating system, you can use a text editor such as Notepad to edit PHP files and set the encoding format of the file to UTF-8.

2. Character encoding

Generally, PHP applications use UTF-8 encoding by default, however, in specific cases, the character encoding needs to be set to GBK or GB2312 and other Chinese codes.

For example, when using a MySQL database, make sure that the character encoding of the database is the same as the character encoding of the PHP program. You can set the character encoding when connecting to the database in PHP:

$conn = mysql_connect("localhost","username","password");
mysql_select_db("database",$conn);
mysql_query("set names 'utf8'",$conn);

3. Output encoding

When outputting Chinese in a PHP file, you need to ensure that the output encoding matches the file Coding is consistent. You can use the header() function to set the output encoding:

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

At the same time, when using echo to output Chinese , make sure to use double quotes. Chinese can be used directly in double quotes without escaping.

For example:

echo "Hello, world";

4. String processing function

When processing Chinese strings , use string processing functions that match Chinese encoding. For example, when using the strlen() function to calculate the string length, you need to use the mb_strlen() function.

For example:

$str = "Hello, world";
echo strlen($str); //Output 6
echo mb_strlen($str,'utf- 8'); //Output 4

5. File inclusion

When using file inclusion, make sure that the encoding of the included file is consistent with that of the main file. You can use the require or include functions to include files, and use absolute or relative paths to specify file locations.

For example:

require_once("/path/to/file.php");

In short, when using Chinese in PHP files, pay attention to the file and character encoding , output encoding, string processing functions and file inclusion, etc., to avoid the occurrence of Chinese garbled characters while ensuring consistency.

The above is the detailed content of Chinese characters in php files become garbled. For more information, please follow other related articles on the PHP Chinese website!