Unique ID

#1
Guest_Jaan_*

Posted 22 March 2007 - 06:45 PM

Guests

Sometimes you need to create a unique id for something.. i'll show you one really easy way how to create a unique id:

<?php
echo uniqid(); // This will create a ID what is 13 characters long
?>

Example

<?php
echo uniqid('', true); // This will create a ID what is 23 characters long
?>

Example

#2
John

Posted 22 March 2007 - 11:40 PM

Writes binary right handed and hex left handed

Moderators
6,321 posts

What is each parameter responsible for? Meaning what happens if i change true to false? and what can i put in the ' ' ?

#3
Guest_Jaan_*

Posted 23 March 2007 - 04:06 AM

Guests

uniqid syntax is:


uniqid(string prefix, [bool_more_entropy])

so.. if you use this:


<?php

echo uniqid('', true); // This will create a ID what is 23 characters long

?>

then you can write your ID prefix into ' '.

Example:

<?php

echo uniqid('codecall', true);

?>

This will create a unique id what looks like this:
Check
Like you see there's prefix+id so there have to be codecall(idHere)

Now those true and false statements

If you use false statement then your id will be 13 characters long, but if you use true statements then this id will be 23 characters long