src/Archangel.php
protected function buildHeaders()
    {
        $headers = array();
        foreach ($this->headers as $key => $value) {
            if ($key == 'CC' || $key == 'BCC') {
                $value = implode(', ', $value);
            }
            array_push($headers, sprintf('%s: %s', $key, $value));
        }

        if (!empty($this->attachments)) {
            array_push(
                $headers,
                "Content-Type: multipart/mixed; boundary=\"{$this->boundaryMixed}\""
            );
        } elseif (!empty($this->plainMessage) && !empty($this->htmlMessage)) {
            array_push(
                $headers,
                "Content-Type: multipart/alternative; boundary=\"{$this->boundaryAlternative}\""
            );
        } elseif (!empty($this->htmlMessage)) {
            array_push(
                $headers,
                'Content-type: text/html; charset="iso-8859-1"'
            );
        }

        return implode(self::LINE_BREAK, $headers);
    }
protected function buildHeaders()
    {
        $headers = array();
        foreach ($this->headers as $key => $value) {
            if ($key == 'CC' || $key == 'BCC') {
                $value = implode(', ', $value);
            }
            array_push($headers, sprintf('%s: %s', $key, $value));
        }

        if (!empty($this->attachments)) {
            array_push(
                $headers,
                "Content-Type: multipart/mixed; boundary=\"{$this->boundaryMixed}\""
            );
        } elseif (!empty($this->plainMessage) && !empty($this->htmlMessage)) {
            array_push(
                $headers,
                "Content-Type: multipart/alternative; boundary=\"{$this->boundaryAlternative}\""
            );
        } elseif (!empty($this->htmlMessage)) {
            array_push(
                $headers,
                'Content-type: text/html; charset="iso-8859-1"'
            );
        }

        return implode(self::LINE_BREAK, $headers);
    }
protected function buildHeaders ( ) { $ headers = array ( ) ; foreach ( $ this -> headers as $ key => $ value ) { if ( $ key == 'CC' || $ key == 'BCC' ) { $ value = implode ( ', ' , $ value ) ; } array_push ( $ headers , sprintf ( '%s: %s' , $ key , $ value ) ) ; } if ( ! empty ( $ this -> attachments ) ) { array_push ( $ headers , "Content-Type: multipart/mixed; boundary=\"{$this->boundaryMixed}\"" ) ; } elseif ( ! empty ( $ this -> plainMessage ) && ! empty ( $ this -> htmlMessage ) ) { array_push ( $ headers , "Content-Type: multipart/alternative; boundary=\"{$this->boundaryAlternative}\"" ) ; } elseif ( ! empty ( $ this -> htmlMessage ) ) { array_push ( $ headers , 'Content-type: text/html; charset="iso-8859-1"' ) ; } return implode ( self :: LINE_BREAK , $ headers ) ; }
Builder for the additional headers needed for multipart emails

@return string headers needed for multipart
Builder for the additional headers needed for multipart emails