Creating a unique image name on upload

[jennyp]

I have a MySQL database which holds information about a number of images, and I want to display these images in PHP pages.

I'm trying to write an upload page which will add images to this database, but in order to store a unique pathname/url for each one I need to create a unique name - or prefix - for each image as it is uploaded, and which is not already in the database.

I'd appreciate any tips or examples on how to go about doing this! Thanks!

[bogu]

U may use time() function or uniqid and befor uploading, prepare a name for the file, check is the filename u are trying to upload dont already exists and if exists regenerate a new one ...