PHP 4, PHP 5, PHP 7, PHP 8
imap_utf7_decode - Decodes a modified UTF-7 encoded string
imap_utf7_decode( string$string ): string|false
Decodes modified UTF-7 string into ISO-8859-1 string.
This function is needed to decode mailbox names that contain certain characters which are not in range of printable ASCII characters.
A modified UTF-7 encoding string, as defined in RFC 2060, section 5.1.3.
Returns a string that is encoded in ISO-8859-1 and consists of the same sequence of characters in string, or false if string contains invalid modified UTF-7 sequence or string contains a character that is not part of ISO-8859-1 character set.