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FooKelvin

How to generate Auto Increment ID? (Character and Number)

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Hi, how to generate auto increment ID with combination of characters and number.

For example, i would like to have product ID start from PROD00001.

When i add second product, the ID will check on the existing database to check PROD00001 is the latest ID.

So, the second product ID will +1, become PROD00002.

 

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So what exactly prevents you from using an actual AUTO_INCREMENT column? This “PROD...” stuff is only how you would display the numeric ID, and it can easily be done using (s)printf():

<?php

$id = 5;
printf('The ID is PROD%05d', $id);

In any case, don't try to invent your own auto-increment mechanism. If you naively select the latest ID, increment it and then update the ID, you'll get duplicate IDs when two PHP processes run at almost the same time.

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