如何在php中给url一个唯一的ID？

Question

I want give particular unique id in my url, like at the end of url "?id=smtb" should be included...

as I am not knowing which code to be used in order to convert below url

www.mylink.com/page.php

into

www.mylink.com/page.php?id=smtb
www.mylink.com/page.php?id=sea

so that I can able to store in my database

Answer 1

Contact Form

<form method="GET" action="process.php">
    <input type="hidden" name="p" id="p" value="<?php echo $_GET['id']; ?>" />
</form>

process.php

$pageid = $_GET['p'];

When you click the link, you wil get something like:

www.abc.de/process.php?p=123123 this part makes no sense for me tho:

<?php echo $_GET['id']; ?> 

probably its this:

<?php echo $id ?> 

Answer 2

You can create uniq id's with this following function in PHP.

$up_id = uniqid(); 

If you just want your random id in Just the letters like string format.

You can uset that following function definied.

function generateRandomString($length = 5) {
    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $randomString = '';
    for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, strlen($characters) - 1)];
    }
    return $randomString;
}

You can get the link with linking like <a href="page.php?id=<?php echo $up_id; ?>">here you go</a>

Answer 3

If I understood your question correctly, you are looking for a way to generate a unique (numeric) id for each form you submit?

The first thing that comes to mind is to use a time function, which technically could result in duplicates, but in practice will be safe unless you have over 1000 requests per second.

$id = microtime(true) * 10000;

this snippet will produce a number similar to: 13966142246941

As for including it in your form, I'm guessing that @Xatenev's answer will suffice.

<?php echo $id ?>

Hope that helps.