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<?php
class Mail
{
private $from = ['name' => '', 'email' => ''];
private $to = [];
private $subject = '';
private $message = '';
private $files = [];
private $multipart = false;
private $boundary = '';
private $uniqId = '';
private $replyTo = [];
private $timestamp = null;
const CRLF = "\r\n";
public function __construct()
{
$this->uniqId = '<php-mail-' . md5(microtime()) . mt_rand() . '@git.php.net>';
}
/**
* Return unique id of mail
* @return string unique Id of message in format: '<php-mail-...@git.php.net';
*/
public function getId()
{
return $this->uniqId;
}
/**
* Add parent mail for this mail
* @param string $uniqId unique Id of message in format: '<php-mail-...@git.php.net';
*/
public function addReplyTo($uniqId)
{
$this->replyTo[] = $uniqId;
}
/**
* Add attached text file to mail
* @param string $name unique file name
* @param string $data file content
*/
public function addTextFile($name , $data)
{
$this->files[trim($name)] = chunk_split(base64_encode($data), 76, self::CRLF);
}
/**
* Return length of attached file
* @param string $name unique file name
* @return int file length
*/
public function getFileLength($name)
{
$name = trim($name);
return isset($this->files[$name]) ? strlen($this->files[$name]) : 0;
}
/**
* Delete attached file
* @param string $name unique file name
*/
public function dropFile($name)
{
$name = trim($name);
unset($this->files[$name]);
}
/**
* Set "From" address
* @param string $email email author address
* @param string $name author name
*/
public function setFrom($email, $name = '')
{
$this->from = ['email' => trim($email), 'name' => trim($name)];
}
/**
* Add recipient address
* @param string $email recipient address
* @param string $name recipient name
*/
public function addTo($email, $name = '')
{
$this->to[] = ['email' => trim($email), 'name' => trim($name)];
}
/**
* Set mail subject
* @param string $subject subject
*/
public function setSubject($subject)
{
$this->subject = trim($subject);
}
/**
* Set timestamp
* @param string $timestamp timestamp
*/
public function setTimestamp($timestamp)
{
$this->timestamp = trim($timestamp);
}
/**
* Set mail body text
* @param string $message body text
*/
public function setMessage($message)
{
$this->message = $message;
}
/**
* Format header string
* @param string $name header name
* @param string $value header value
* @return string header string
*/
private function makeHeader($name, $value)
{
return $name . ': ' . $value;
}
/**
* Format address string
* @param array $address array with email adress and name
* @return string address string
*/
private function makeAddress(array $address)
{
return $address['name'] ? $this->utf8SafeEncode($address['name'], 100) . ' <'. $address['email'] . '>' : $address['email'];
}
/**
* Cut end encode string by mb_encode_mimeheader
* @param string $value utf8 string
* @param int $maxLenght max length
* @return string encoded string
*/
private function utf8SafeEncode($value, $maxLenght = null)
{
if ($maxLenght) $value = mb_substr($value, 0, $maxLenght);
return mb_encode_mimeheader($value, 'UTF-8', 'Q');
}
/**
* Prepare heade part of mail
* @return string header part of mail
*/
private function makeHeaders()
{
$headers = [];
$headers[] = $this->makeHeader('From', $this->makeAddress($this->from));
$headers[] = $this->makeHeader('Message-ID', $this->uniqId);
if (count($this->replyTo)) {
$replyTo = implode(' ', $this->replyTo);
$headers[] = $this->makeHeader('References', $replyTo);
$headers[] = $this->makeHeader('In-Reply-To', $replyTo);
}
$headers[] = $this->makeHeader('MIME-Version', '1.0');
$headers[] = $this->makeHeader('Date', date(DATE_RFC2822, $this->timestamp ?: time()));
if ($this->multipart) {
$this->boundary = sha1($this->uniqId);
$headers[] = $this->makeHeader('Content-Type', 'multipart/mixed; boundary="' . $this->boundary . '"');
} else {
$headers[] = $this->makeHeader('Content-Type', 'text/plain; charset="utf-8"');
// we use base64 for avoiding some problems sush string length limit, safety encoding etc.
$headers[] = $this->makeHeader('Content-Transfer-Encoding', 'quoted-printable');
}
return implode(self::CRLF , $headers);
}
/**
* Prepare body part of mail
* @return string mail body
*/
private function makeBody()
{
$body = '';
if ($this->multipart) {
$body .= '--' . $this->boundary . self::CRLF;
$body .= $this->makeHeader('Content-Type', 'text/plain; charset="utf-8"') . self::CRLF;
$body .= $this->makeHeader('Content-Transfer-Encoding', 'quoted-printable') . self::CRLF;
$body .= self::CRLF;
$body .= quoted_printable_encode($this->message);
foreach ($this->files as $name => $data) {
$body .= self::CRLF . '--' . $this->boundary . self::CRLF;
$body .= $this->makeHeader('Content-Type', 'text/plain; charset="utf-8"') . self::CRLF;
$body .= $this->makeHeader('Content-Transfer-Encoding', 'base64') . self::CRLF;
$body .= $this->makeHeader('Content-Disposition', 'attachment; filename="' . $name . '"') . self::CRLF;
$body .= self::CRLF;
$body .= $data;
}
$body .= self::CRLF . '--' . $this->boundary . '--';
} else {
$body = quoted_printable_encode($this->message);
}
return $body;
}
/**
* Send current mail
* @return bool
*/
public function send()
{
$this->multipart = (bool) count($this->files);
$receivers = implode(', ', array_map([$this, 'makeAddress'], $this->to));
$subject = $this->utf8SafeEncode($this->subject, 450);
$headers = $this->makeHeaders();
$body = $this->makeBody();
return mail($receivers, $subject, $body, $headers, "-f noreply@php.net");
}
}
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