The mb_regex_encoding() is an inbuilt function in PHP that is used for setting and retrieving the encoding for the multibyte regular expression.
Syntax:
mb_regex_encoding(?string $encoding = null): string|bool
Parameters: The function accept only one parameter which is described below.
- $encoding: The parameter defines which encoding you will be going to use in this program. If the encoding will be omitted, it will use an internal encoding.
Return Values: The return type of mb_regex_encoding() is mixed, which means that the function can return different types of values depending on the context in which it is used. If you call mb_regex_encoding() without any arguments, it will return the current character encoding as a string.
Example 1: The following program demonstrates the mb_regex_encoding() function.
PHP
<?php mb_regex_encoding('ISO-8859-1'); // Search a string using a regular expression // with ISO-8859-1 characters $string = 'The café is closed.'; if (mb_ereg('^The café is closed.$', $string)) { echo 'The string matches the regular expression!'; } else { echo 'The string does not match the regular expression.'; } ?> |
Output:
The string matches the regular expression!
Example 2: The following program demonstrates the mb_regex_encoding() function.
PHP
<?php mb_regex_encoding('UTF-8'); $success = mb_regex_encoding('ISO-8859-1'); if ($success) { echo 'New encoding set successfully.'; } else { echo 'Failed to set new encoding.'; } ?> |
Output:
New encoding set successfully.
Reference: https://www.php.net/manual/en/function.mb-regex-encoding.php
