问题 I have a simple form for creating an article: Title,image,category,body , etc.. My problem is with the image input. Selecting a new one and submitting everything works fine: the image is being uploaded to the server the title of the image is being saved to db and i can print it in the article. By editing the whole form, filling all fields but leaving the image field as it is, and finally submitting, the image field value in db is changing to nothing. How can i configure the php file, so every