It will always create unique id's based on the current time, process and machine name. Generate 18 byte unique id's based on the time, process id and mac address. Works on multiple processes and machines.
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adamhalasz/uniqid
It will always create unique id's based on the current time, process and machine name. Generate 18 byte unique id's based on the time, process id and mac address. Works on multiple processes and machines.
Full article