move_uploaded_file(): SAFE MODE Restriction in effect. The script whose uid is 523 is not allowed to access /htdocs/cn/special/impic_12 owned by uid 99

我是用mkdir ($temp_path，0777 );创建的impic_12文件夹，并创建成功，但是属性为0755（0777，才能上传文件成功）;使用chmod($temp_path,0777)命令也没有用！
我以前也在其他服务器上用过mkdir，并没有出现过这个错误的，谁能告诉我是怎么回事吗？