How to solve the problem of Chinese garbled characters when converting hexadecimal to string in PHP

In PHP programming, sometimes we will encounter the need to express hexadecimal Convert the string to normal Chinese characters. However, in the process of this conversion, sometimes you will encounter the problem of Chinese garbled characters. This article will provide you with a method to solve the problem of Chinese garbled characters when converting hexadecimal to string in PHP, and give specific code examples.

1. Use hex2bin() function for hexadecimal conversion

PHP’s built-in hex2bin() function can convert a hexadecimal string into a normal string . When using this function, you need to ensure that the incoming hexadecimal string is in the correct format, otherwise it will cause garbled characters.

The following is a simple sample code that demonstrates how to use the hex2bin() function to convert a hexadecimal string into a normal Chinese string:

$hexString = "e6b587e58faae4b88ae5ad90"; //16進(jìn)制表示的中文字符串
$normalString = hex2bin($hexString);
echo $normalString;

In the above code, $hexString It is a Chinese string represented in hexadecimal. After conversion using the hex2bin() function, $normalString will get the corresponding Chinese string. This method is suitable for solving simple hexadecimal conversion problems.

2. Processing multi-byte character encoding

When processing Chinese strings, you need to consider the issue of multi-byte character encoding. In PHP, you can use the mb_convert_encoding() function to handle multi-byte character encoding to ensure normal conversion.

The following is a sample code that shows how to combine the hex2bin() and mb_convert_encoding() functions to process Chinese hexadecimal strings:

$hexString = "e6b587e58faae4b88ae5ad90"; //16進(jìn)制表示的中文字符串
$normalString = hex2bin($hexString);
$chineseString = mb_convert_encoding($normalString, 'UTF-8', 'UTF-16BE');
echo $chineseString;

In the above code, $hexString is a hexadecimal string The Chinese string represented by the system is first converted into a normal string using the hex2bin() function, and then converted into a UTF-8 encoded Chinese string through the mb_convert_encoding() function. This can effectively avoid the problem of Chinese garbled characters.

Summary:

When processing hexadecimal to string conversion in PHP, you need to pay attention to the following points to avoid Chinese garbled characters:

• Make sure that the incoming 16 The hexadecimal string format is correct
• Use hex2bin() function for conversion
• When dealing with multi-byte character encoding, combine the mb_convert_encoding() function

Through the above method , we can effectively solve the problem of Chinese garbled characters in hexadecimal string conversion in PHP and ensure that Chinese characters are displayed normally.

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