With this little PHP script you can directly post photos to your server using Tweetbot.

gistfile1.php

<?php

$saveDir = ""; // place where the images should be saved.
$domain = "THE DOMAIN YOU'RE USING"; // your domain.

//server-side directory
$directory_self = str_replace(basename($_SERVER['PHP_SELF']), '', $_SERVER['PHP_SELF']);
$uploadsDirectory = $_SERVER['DOCUMENT_ROOT'] . $directory_self . $saveDir;

// Image filetype check source:
// http://designshack.net/articles/php-articles/smart-file-type-detection-using-php/
$tempFile = $_FILES['media']['tmp_name'];
$imginfo_array = getimagesize($tempFile);

if ($imginfo_array !== false) {
    $mime_type = $imginfo_array['mime'];
    $mime_array = array("video/quicktime", "image/png", "image/jpeg", "image/gif", "image/bmp");
    if (in_array($mime_type , $mime_array)) {

  	//generate random filename
		while(file_exists($uploadFilename = $uploadsDirectory.time().'-'.$_FILES['media']['name'])){$now++;}

		//upload the file to the webserver
		@move_uploaded_file($_FILES['media']['tmp_name'], $uploadFilename);

		//generate the filename that will be given to Tweetbot
		$outputFilename = $domain . $saveDir . basename($uploadFilename);

		//respond with JSON encoded media URL
		$response = array(url=>$outputFilename);
		echo json_encode($response);

    }
}
else {
    echo "This is not a valid image file";
}

?>

Tweetbot Image Hoster

With this little PHP script you can directly post photos to your server using Tweetbot.