mb_regex_encoding

Function name: mb_regex_encoding()

Function description: mb_regex_encoding() is used to set or get the current multibyte regular expression encoding.

usage:

1. Get the current multibyte regular expression encoding: string mb_regex_encoding(void)

   Example:

    $encoding = mb_regex_encoding(); echo "当前的多字节正则表达式编码是：".$encoding;

2. Set the current multibyte regular expression encoding: bool mb_regex_encoding(string $encoding)

   Parameters: $encoding - The encoding name to be set, such as "UTF-8".

   Example:

    $encoding = "UTF-8"; $result = mb_regex_encoding($encoding); if ($result) { echo "多字节正则表达式编码已设置为：".$encoding; } else { echo "设置多字节正则表达式编码失败！"; }

Notes:

• The mb_regex_encoding() function requires support for the mbstring extension. Make sure that the extension is enabled in the PHP configuration file.
• Multi-byte regular expression encoding needs to match the actual character encoding used, otherwise it may cause regular expression matching to fail.

Applicable version: PHP 4.2.0 and above.