mailtodisk.php

<?php

// sendmail_path="C:\XAMPP\php\php.exe C:\WWW\mailtodisk.php \"C:\XAMPP\mailoutput\__TIME__-__RAND__-__SUBJECT__.eml\""
// sendmail_path = "/usr/bin/php /var/www/mailtodisk.php \"/var/www/mailoutput/__TIME__-__RAND__-__SUBJECT__.eml\""

// file_put_contents(__DIR__ . '/mailtodisk.log', print_r($_SERVER, 1));

// Destination folder/filename is required
$destination = @$_SERVER['argv'][1];
if (!$destination) {
	// file_put_contents(__DIR__ . '/mailtodisk.log', "\n\n\n\n\n\nmissing destination\n", FILE_APPEND);
	exit(1);
}

// Create target folder
@mkdir(dirname($destination), 0777, true);
if (!is_dir(dirname($destination))) {
	// file_put_contents(__DIR__ . '/mailtodisk.log', "\n\n\n\n\n\n\ninvalid destination\n", FILE_APPEND);
	exit(2);
}

// Get entire mail content
$mail = file_get_contents('php://stdin');
// file_put_contents(__DIR__ . '/mailtodisk.log', "\n\n\n\n\n\n\n$mail\n", FILE_APPEND);

// Extract subject
$subject = 'NO SUBJECT';
if (preg_match('#Subject:\s+([^\r\n]+)#', $mail, $match)) {
	$subject = imap_utf8($match[1]);
}

// Create filename with wildcards
list($usec) = explode(" ", microtime());
$destination = strtr($destination, array(
	'__TIME__' => date('Y_m_d-H_i_s') . '-' . substr($usec, 2),
	'__RAND__' => rand(),
	'__SUBJECT__' => preg_replace('#_{2,}#', '_', trim(preg_replace('#[^a-z0-9-]#i', '_', $subject), '_')),
));

file_put_contents($destination, $mail);
exit(0);