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.

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