How to solve garbled characters in php code

With the development of the Internet, PHP has become a very popular server-side programming language. However, it is also common to encounter garbled characters when using PHP. This article will introduce the reasons and solutions for garbled PHP code.

1. Reasons

1. Inconsistent character encoding: Inconsistent character encoding between the server and the client will result in garbled characters.

2. File encoding: If the encoding of the PHP file is not a commonly used encoding such as UTF-8 or GB2312, garbled characters will appear.

3. Problems with the program itself: The program does not handle specific characters correctly and will also produce garbled characters.

2. Solution

1. Check the file encoding: You can use a text editor to open the PHP file and check the file encoding. If it is found that it is not UTF-8 or GB2312 encoding, you need to change the file encoding to UTF-8 or GB2312 encoding.

2. Set character encoding: You can set the character encoding in the header of PHP, for example:

3. Check the database connection: If you are using a database, you also need to set the character encoding when connecting to the database. For example, when using mysqli connection:

mysqli_set_charset("utf8");

4. Processing HTML special characters: When outputting content, if you need to output HTML special characters (<, >, &, etc.), need to be escaped using the htmlspecialchars function. For example:

echo htmlspecialchars($content);

5. Process other characters: If other characters are garbled, they can be converted through the iconv function. For example, convert a GB2312-encoded string to a UTF-8-encoded string:

iconv("GB2312", "UTF-8", $str);

6. Use transcoding Tools: Sometimes garbled code may appear because there is a problem with the code itself. You can use a transcoding tool to convert it. For example, use Notepad's transcoding function.

The above are several methods to solve the problem of garbled characters in PHP code. In most cases, the problem of garbled characters can be solved. Of course, different garbled code problems need to be handled according to specific circumstances to ensure that the PHP code can run normally and the output content will not be garbled.

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