php generate randomstring code example

Example 1: randomstring php

//generates 13 character random unique alphanumeric id
echo uniqid();
//output - 5e6d873a4f597

Example 2: rand string php

function RandomString()
    {
        $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
        $randstring = '';
        for ($i = 0; $i < 10; $i++) {
            $randstring = $characters[rand(0, strlen($characters))];
        }
        return $randstring;
    }