新手问一个问题，关于上传文件的

提示这个错误 怎么回事
Warning: mkdir(): No such file or directory in /home/u620403387/public_html/pic/add_file.php on line 47 Warning: move_uploaded_file(/image/pic/1383042727.jpg): failed to open stream: No such file or directory in /home/u620403387/public_html/pic/add_file.php on line 56 Warning: move_uploaded_file(): Unable to move '/tmp/phpyEgoIZ' to '/image/pic/1383042727.jpg' in /home/u620403387/public_html/pic/add_file.php on line 56I