Hi Everyone,

I've been struggling with this for a half day and can't seem to figure out why SWFupload is adding an extra extension to my uploads? (e.g. burer.jpg.jpg)

I've reviewed the below code a thousand times and can't figure out why my files (whether png, gif or jpg) get an added .jpg extension?

<?php
    $POST_MAX_SIZE = ini_get('post_max_size');
    $unit = strtoupper(substr($POST_MAX_SIZE, -1));
    $multiplier = ($unit == 'M' ? 1048576 : ($unit == 'K' ? 1024 : ($unit == 'G' ? 1073741824 : 1)));

    if ((int)$_SERVER['CONTENT_LENGTH'] > $multiplier*(int)$POST_MAX_SIZE && $POST_MAX_SIZE) {
        header("HTTP/1.1 500 Internal Server Error"); // This will trigger an uploadError event in SWFUpload
        echo "POST exceeded maximum allowed size.";
        exit(0);
    }

// Settings
    $save_path = "/home/images/";
    $upload_name = "image";
    $max_file_size_in_bytes = 2147483647;               // 2GB in bytes
    $extension_whitelist = array("jpg", "gif", "png", "jpeg");  // Allowed file extensions
    $valid_chars_regex = '.A-Z0-9_ !@#$%^&()+={}\[\]\',~`-';                // Characters allowed in the file name (in a Regular Expression format)

// Other variables  
    $MAX_FILENAME_LENGTH = 260;
    $file_name = "";
    $file_extension = "";
    $uploadErrors = array(
        0=>"There is no error, the file uploaded successfully",
        1=>"The uploaded file exceeds the upload_max_filesize directive in php.ini",
        2=>"The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form",
        3=>"The uploaded file was only partially uploaded",
        4=>"No file was uploaded",
        6=>"Missing a temporary folder"
    );


// Validate the upload
    if (!isset($_FILES[$upload_name])) {
        HandleError("No upload found in \$_FILES for " . $upload_name);
        exit(0);
    } else if (isset($_FILES[$upload_name]["error"]) && $_FILES[$upload_name]["error"] != 0) {
        HandleError($uploadErrors[$_FILES[$upload_name]["error"]]);
        exit(0);
    } else if (!isset($_FILES[$upload_name]["tmp_name"]) || !@is_uploaded_file($_FILES[$upload_name]["tmp_name"])) {
        HandleError("Upload failed is_uploaded_file test.");
        exit(0);
    } else if (!isset($_FILES[$upload_name]['name'])) {
        HandleError("File has no name.");
        exit(0);
    }

// Validate the file size (Warning: the largest files supported by this code is 2GB)
    $file_size = @filesize($_FILES[$upload_name]["tmp_name"]);
    if (!$file_size || $file_size > $max_file_size_in_bytes) {
        HandleError("File exceeds the maximum allowed size");
        exit(0);
    }

    if ($file_size <= 0) {
        HandleError("File size outside allowed lower bound");
        exit(0);
    }

// Validate file name (for our purposes we'll just remove invalid characters)
    $file_name = preg_replace('/[^'.$valid_chars_regex.']|\.+$/i', "", $_FILES[$upload_name]['name']);
    if (strlen($file_name) == 0 || strlen($file_name) > $MAX_FILENAME_LENGTH) {
        HandleError("Invalid file name");
        exit(0);
    }

// Validate file extension
    $path_info = pathinfo($_FILES[$upload_name]['name']);
    $file_extension = $path_info["extension"];
    $is_valid_extension = false;
    foreach ($extension_whitelist as $extension) {
        if (strcasecmp($file_extension, $extension) == 0) {
            $is_valid_extension = true;
            break;
        }
    }
    if (!$is_valid_extension) {
        HandleError("Invalid file extension");
        exit(0);
    }

    if (!@move_uploaded_file($_FILES[$upload_name]["tmp_name"], $save_path.$file_name)) {
        HandleError("File could not be saved.");
        exit(0);
    }
    HandleError($_FILES[$upload_name]['name']);
    exit(0);

function HandleError($message) {
    echo $message;
}
?>