Sets the Content-ID header for this part.
public setContentId ( string $cid = null ) : string | ||
$cid | string | Use this CID (if not already set). Else, generate a random CID. |
return | string | The Content-ID for this part. |
public setContentId ( string $cid = null ) : string | ||
$cid | string | Use this CID (if not already set). Else, generate a random CID. |
return | string | The Content-ID for this part. |