PHP で PEAR::Mail を使ってメールにファイルを添付して凄く簡単にメール送信する

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$data = Array(
 'to' => 'info@weble.org',
 'from' => 'info@example.com',
 'name' => '団体名',
 'subject' => 'タイトル',
 'body' => '内容',
 'option' => Array('file' => '/uploads/2012/screenshot-2012年06月03日.png')
);
if(mail_post($data)) {
 echo 'メール送信成功';
} else {
 echo 'メール送信失敗';
}

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sudo pear install -a Mail
sudo pear install -a Mail_mime

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function mail_post($data, $document_root = '/var/www/html')
{
 if(isset($data['option']['file'])) {
 
 $pear_mail = include_once("Mail.php");
 $pear_mail_mime = include_once("Mail/mime.php");
 
 if($pear_mail && $pear_mail_mime) {
 
 preg_match('/[^\/]+$/', $data['option']['file'], $filename);
 mb_convert_variables('JIS', 'UTF-8', $data['body'], $filename[0]);
 
 $mime = new Mail_mime;
 $mime->setParam('text_charset', 'ISO-2022-JP');
 $mime->setParam('text_encoding', '8bit');
 $mime->setTxtBody($data['body']);
 $mime->addAttachment($document_root . $data['option']['file'], null, $filename[0]);
 $headers = array(
 'From' => $data['from'], 'To' => $data['to'],
 'Subject' => mb_encode_mimeheader(mb_convert_encoding($data['subject'], 'JIS', 'UTF-8'), 'JIS'),
 );
 $headers = $mime->headers($headers);
 $body = $mime->get();
 
 $mail = Mail::factory('sendmail');
 return $mail->send($data['to'], $headers, $body);
 } else {
 return false;
 }
 } else {
 mb_language("japanese");
 mb_internal_encoding("UTF-8");
 $to = $data['to'];
 $from = mb_encode_mimeheader(mb_convert_encoding($data['name'], "JIS", "UTF-8")) . "<{$data['from']}>";
 return mb_send_mail($to, $data['subject'], $data['body'], "From:{$from}");
 }
}