How to convert UTF-16 encoding to Chinese in php

UTF-16 is a Unicode character encoding method that supports multiple languages, including Chinese. In PHP, we can use some functions to convert UTF-16 encoding to Chinese characters.

1. UTF-16 encoding

UTF-16 is a 16-bit Unicode character encoding method, which can represent global language character sets, including English, Chinese, Japanese, etc. wait. UTF-16 encoding uses one word (16 bits) to represent a character.

UTF-16 encoded byte sequence is divided into big-endian byte order and little-endian byte order. Big-endian byte order means the high-order byte first, and little-endian byte order means the low-order byte first. When using UTF-16 encoding, we need to specify which byte order to use.

2. Convert UTF-16 encoding to Chinese

In PHP, we can use the iconv and mb_convert_encoding functions to convert UTF-16 encoding to Chinese.

1. iconv function

iconv function can be used to convert character sets of strings. Its syntax is as follows:

string iconv ( string $in_charset , string $out_charset , string $str )

Among them, $in_charset represents the character set of the original string, $out_charset represents the character set of the target string, and $str represents the string that needs to be converted.

For example, we can use the following code to convert a UTF-16 encoded string to a Chinese string:

$str = "0055006A8F6CFF";
$str_utf16 = hex2bin($str);
$str_chinese = iconv("UTF-16LE", "UTF-8", $str_utf16);
echo $str_chinese;

In the above code, we first use the hex2bin function to convert the hexadecimal string Convert to a UTF-16 encoded string, and then use the iconv function to convert the UTF-16 encoded string to a Chinese string. In the iconv function, we specify that the character set of the original string is UTF-16LE (little-endian byte order), and the character set of the target string is UTF-8.

2. mb_convert_encoding function

The mb_convert_encoding function can also be used for character set conversion of strings. Its syntax is as follows:

string mb_convert_encoding ( string $str , string $to_encoding [, mixed $from_encoding = mb_internal_encoding() ] )

Among them, $str represents the string that needs to be converted, $to_encoding represents the character set of the target string, $from_encoding represents the characters of the original string Set, defaults to the return value of the mb_internal_encoding() function.

For example, we can use the following code to convert a UTF-16 encoded string to a Chinese string:

$str = "0055006A8F6CFF";
$str_utf16 = hex2bin($str);
$str_chinese = mb_convert_encoding($str_utf16, 'UTF-8', 'UTF-16LE');
echo $str_chinese;

In the above code, we first use the hex2bin function to convert the hexadecimal string Convert to a UTF-16 encoded string, and then use the mb_convert_encoding function to convert the UTF-16 encoded string to a Chinese string. In the mb_convert_encoding function, we specify that the character set of the original string is UTF-16LE (little endian byte order), and the character set of the target string is UTF-8.

3. Conclusion

UTF-16 encoding is an encoding method that supports multi-language character sets, including Chinese character sets. In PHP, we can use iconv and mb_convert_encoding functions to convert UTF-16 encoded strings to Chinese strings. When using these functions, we need to specify the character set of the original string and the character set of the target string.

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