PO::export_headers(): string

39		public function export_headers() {40			$header_string = '';41			foreach ( $this->headers as $header => $value ) {42				$header_string .= "$header: $value\n";43			}44			$poified = PO::poify( $header_string );45			if ( $this->comments_before_headers ) {46				$before_headers = $this->prepend_each_line( rtrim( $this->comments_before_headers ) . "\n", '# ' );47			} else {48				$before_headers = '';49			}50			return rtrim( "{$before_headers}msgid \"\"\nmsgstr $poified" );51		}