tmb-nginx.conf

server {
    listen       80;
    server_name  tmb.rating-widget.com;
    root         /full/path/to/your/app/thumb;

    location = / {
        set $src_filename_l _;
        set $src_filename_r _;
        set $src_extension _;

        #
        # Parse src param that have a valid image extension (jpg, jpeg, png or gif).
        #
        if ($args ~ "src=http(s?)%3A%2F%2F(?<src_filename_l>.{3,115})(.*?)(?<src_filename_r>.{0,115})\.(?<src_extension>(jpg|gif|png|jpeg))$"){ }

        #
        # Parse src param with a general address (image or any other given url).
        #
        if ($args ~ "src=http(s?)%3A%2F%2F(?<src_address_l>.{3,115})(.*?)(?<src_address_r>.{0,115})$"){ }

        #
        # If the src param was NOT a valid image url - use general address and set the file extension to jpg by default.
        #
        if ($src_extension = "_") {
            set $src_filename_l $src_address_l;
            set $src_filename_r $src_address_r;
            set $src_extension jpg;
        }

        #
        # Set some default values for timthumb width, height and zoom crop.
        #
        set $zc 1;
        set $w 152;
        set $h 110;
        if ($arg_zc) {
            set $zc $arg_zc;
        }
        if ($arg_w) {
            set $w $arg_w;
        }
        if ($arg_h) {
            set $h $arg_h;
        }

        #
        # Finally, combine the cache filename.
        #
        set $os_filename "$src_filename_l$src_filename_r-$zc-$h-$w.$src_extension";

        #
        # If the file found on the disk, simply serve the cached file without starting php-fpm.
        #
        if (-f $document_root/img-cache/$os_filename) {
            rewrite ^ /img-cache/$os_filename last;
            return 200;
        }

        include        fastcgi_params;
        fastcgi_read_timeout 120s;
        fastcgi_index  timthumb.php;
        # Optional addition of the filename for DEBUG.
        fastcgi_param  QUERY_STRING     $query_string&p=$os_filename;
        fastcgi_param  SCRIPT_FILENAME $document_root/timthumb.php;

        #
        # If the file is not found on the disk route the request to timthumb php script.
        #
        if (!-f $document_root/img-cache/$os_filename) {
             fastcgi_pass   unix:/tmp/php5-fpm.sock;
        }
    }
 
    #
    # Cache all requests
    #
    add_header        Cache-Control public;
    add_header        Cache-Control must-revalidate;
    expires           max;
    
    include /etc/nginx/conf.global.d/restrictions.conf;
    include /etc/nginx/conf.global.d/common.conf;
}