Sometimes you donot need to run php code in all your folder such as your image folder. In your Image folder, add following codes:
order allow,deny deny from all # secure directory by disabling script execution AddHandler cgi-script .php .pl .py .jsp .asp .htm .shtml .sh .cgi Options -ExecCGI
Above codes will deny all .php, .pl, .py, .jsp, .asp, .htm, .shtml, .sh,.cgi to run in your image folder.