by Sai gowtham

How to generate random alphanumeric string in PHP

This below function will help you to generate a random alphanumeric string in PHP.

function generateRandomString($length = 10) {
    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $charactersLength = strlen($characters);
    $randomString = '';
    for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, $charactersLength - 1)];
    }
    return $randomString;
}

echo $generateRandomString();

Output:

ozQS8IkMb2

Note: By default ,generateRandomString() function generates the combination of 10 random characters.

Top Udemy Courses

JavaScript - The Complete Guide 2020 (Beginner + Advanced)
JavaScript - The Complete Guide 2020 (Beginner + Advanced)
45,614 students enrolled
52 hours of video content
View Course
React - The Complete Guide (incl Hooks, React Router, Redux)
React - The Complete Guide (incl Hooks, React Router, Redux)
284,472 students enrolled
40 hours of video content
View Course
Vue JS 2 - The Complete Guide (incl. Vue Router & Vuex)
Vue JS 2 - The Complete Guide (incl. Vue Router & Vuex)
130,921 students enrolled
21 hours of video content
View Course