webrf/MultipleEmailAttachments.php

## MultipleEmailAttachments.php
<?php
    if(isset($_FILES) && (bool) $_FILES) {
        $AllowedExtensions = ["pdf","doc","docx","gif","jpeg","jpg","png","rtf","txt"];
        $files = [];
        $server_file = [];
        foreach($_FILES as $name => $file) {
            $file_name = $file["name"];
            $file_temp = $file["tmp_name"];
            foreach($file_name as $key) {
                $path_parts = pathinfo($key);
                $extension = strtolower($path_parts["extension"]);
                if(!in_array($extension, $AllowedExtensions)) { die("Extension not allowed"); }
                $server_file[] = "uploads/{$path_parts["basename"]}";
            }
            for($i = 0; $i<count($file_temp); $i++) { move_uploaded_file($file_temp[$i], $server_file[$i]); }
        }
        $to = "<<TO EMAIL>>";
        $from = "<<TO EMAIL>>";
        $subject ="test attachment";
        $message = "this is a test message";
        $headers = "From: $from";
        $semi_rand = md5(time());
        $mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";
        $headers .= "\nMIME-Version: 1.0\n" . "Content-Type: multipart/mixed;\n" . " boundary=\"{$mime_boundary}\"";
        $message = "This is a multi-part message in MIME format.\n\n" . "--{$mime_boundary}\n" . "Content-Type: text/plain; charset=\"iso-8859-1\"\n" . "Content-Transfer-Encoding: 7bit\n\n" . $message . "\n\n";
        $message .= "--{$mime_boundary}\n";
        $FfilenameCount = 0;
        for($i = 0; $i<count($server_file); $i++) {
            $afile = fopen($server_file[$i],"rb");
            $data = fread($afile,filesize($server_file[$i]));
            fclose($afile);
            $data = chunk_split(base64_encode($data));
            $name = $file_name[$i];
            $message .= "Content-Type: {\"application/octet-stream\"};\n" . " name=\"$name\"\n" .
                "Content-Disposition: attachment;\n" . " filename=\"$name\"\n" .
                "Content-Transfer-Encoding: base64\n\n" . $data . "\n\n";
            $message .= "--{$mime_boundary}\n";
        }
        if(mail($to, $subject, $message, $headers)) {
            echo "<p>mail sent to $to!</p>";
        } else {
            echo "<p>mail could not be sent!</p>";
        }
    }
?>

<html>
<head>
    <meta charset="utf-8" />
</head>
<body>

<form method="post" enctype="multipart/form-data">

    <input type="file" name="attach[]" multiple />
    <input type="submit" value="Submit" />

</form>

</body>
</html>
	<?php
	if(isset($_FILES) && (bool) $_FILES) {
	$AllowedExtensions = ["pdf","doc","docx","gif","jpeg","jpg","png","rtf","txt"];
	$files = [];
	$server_file = [];
	foreach($_FILES as $name => $file) {
	$file_name = $file["name"];
	$file_temp = $file["tmp_name"];
	foreach($file_name as $key) {
	$path_parts = pathinfo($key);
	$extension = strtolower($path_parts["extension"]);
	if(!in_array($extension, $AllowedExtensions)) { die("Extension not allowed"); }
	$server_file[] = "uploads/{$path_parts["basename"]}";
	}
	for($i = 0; $i<count($file_temp); $i++) { move_uploaded_file($file_temp[$i], $server_file[$i]); }
	}
	$to = "<<TO EMAIL>>";
	$from = "<<TO EMAIL>>";
	$subject ="test attachment";
	$message = "this is a test message";
	$headers = "From: $from";
	$semi_rand = md5(time());
	$mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";
	$headers .= "\nMIME-Version: 1.0\n" . "Content-Type: multipart/mixed;\n" . " boundary=\"{$mime_boundary}\"";
	$message = "This is a multi-part message in MIME format.\n\n" . "--{$mime_boundary}\n" . "Content-Type: text/plain; charset=\"iso-8859-1\"\n" . "Content-Transfer-Encoding: 7bit\n\n" . $message . "\n\n";
	$message .= "--{$mime_boundary}\n";
	$FfilenameCount = 0;
	for($i = 0; $i<count($server_file); $i++) {
	$afile = fopen($server_file[$i],"rb");
	$data = fread($afile,filesize($server_file[$i]));
	fclose($afile);
	$data = chunk_split(base64_encode($data));
	$name = $file_name[$i];
	$message .= "Content-Type: {\"application/octet-stream\"};\n" . " name=\"$name\"\n" .
	"Content-Disposition: attachment;\n" . " filename=\"$name\"\n" .
	"Content-Transfer-Encoding: base64\n\n" . $data . "\n\n";
	$message .= "--{$mime_boundary}\n";
	}
	if(mail($to, $subject, $message, $headers)) {
	echo "<p>mail sent to $to!</p>";
	} else {
	echo "<p>mail could not be sent!</p>";
	}
	}
	?>

	<html>
	<head>
	<meta charset="utf-8" />
	</head>
	<body>

	<form method="post" enctype="multipart/form-data">

	<input type="file" name="attach[]" multiple />
	<input type="submit" value="Submit" />

	</form>

	</body>
	</html>