PHP-Image - Saving a BLOB(Image) to temporary location

I am saving user's images as blob in database. problem is that after retrieving that blob image,i want to save it in a temporary location of web server and from there i want to apply some business logic. please anybody help me to solve this. Thanks in advance

You can use file_put_contents to write data to a file. Basically, get the blob into a string by retrieving it from the database, then write that string into a file. The tempnam function can be used to create a temporary file, the manual page for this function contains an example of that.