(PHP 4, PHP 5, PHP 7, PHP 8)
imap_binary — Convert an 8bit string to a base64 string
$string): string|falseConvert an 8bit string to a base64 string according to ? RFC2045, Section 6.8.
stringThe 8bit string
Returns a base64 encoded string, 或者在失敗時(shí)返回 false.