The following article may help:
Renaming images based on the time the file was uploaded
In some situations, the developers need to reename images based on the time the file was uploaded. With Cute Editor, you can easily rename images with a time date stamp the file was uploaded.
The unique identifier used in the generated file name has the following format:
YYYYMMDDHHMMSS+3 Random numbers
Where YYYY, MM, DD is the year, month and day; HH, MM, SS is hours, minutes and seconds.
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