Why does php appear garbled? How to deal with it?

PHP is a very popular programming language, but sometimes it may display garbled characters. In this article, we will explore the reasons why PHP is garbled and how to solve this problem.

Part 1: Why garbled characters appear

1. PHP file encoding problem

When the encoding format of the PHP file is different from the encoding format of the web page When the encoding format is inconsistent, it will cause garbled code problems. For example, if the PHP file is encoded in UTF-8, but the encoding format of the web page is GB2312, then garbled characters will occur.

2. Database encoding problem

When using a database, if the encoding format of the database, table, and field is inconsistent with the PHP file encoding, it will also cause garbled code problems. For example, if the database uses UTF-8 encoding, but the PHP file uses GB2312 encoding, garbled characters will occur.

3. Output encoding problem

When the encoding format of PHP output content is inconsistent with the encoding format of the web page, garbled code problems will also occur. For example, if the content output by PHP is encoded in UTF-8, but the encoding format of the web page is GB2312, garbled characters will occur.

Part 2: How to solve the garbled code problem

1. Modify the PHP file encoding

First, we need to confirm the encoding of the PHP file Encoding format. If you find that the encoding format of the PHP file is inconsistent with that of the web page, you can try to change the encoding format of the PHP file to an encoding format that is consistent with the web page, such as UTF-8 or GB2312.

2. Modify database encoding

If the encoding format of the database, table, and field is inconsistent with the PHP file encoding, we can try to modify their encoding format to be consistent with the PHP file encoding. Consistent encoding format. For example, change the encoding format of the database to UTF-8 or GB2312.

3. Modify the output encoding

When the encoding format of the PHP output content is inconsistent with the encoding format of the web page, you can modify the encoding format of the PHP output content to be consistent with the web page Encoding format. For example, change the encoding format of PHP output content to UTF-8 or GB2312.

4. Use the iconv() function to transcode

If the above method cannot solve the garbled problem, you can try to use the iconv() function to transcode. The iconv() function can convert strings of different encodings, such as converting GB2312-encoded strings to UTF-8-encoded strings.

5. Use the mb_convert_encoding() function to transcode

Another feasible method is to use the mb_convert_encoding() function to transcode. The mb_convert_encoding() function can also convert strings of different encodings, but it supports more encoding formats, such as Shift_JIS, EUC-JP, ISO-2022-JP, etc.

Part 3: Summary

When developing PHP applications, it is very common to encounter garbled code problems. This article hopes to help readers solve this problem by introducing the causes and solutions to the PHP garbled problem. In actual development, we should pay attention to the consistency of the encoding format and perform transcoding in a timely manner to avoid garbled code problems.

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