生成大随机数php [重复]

Question

This question already has an answer here:

• In PHP, how do I generate a big pseudo-random number? 12 answers

I want to generate a number with 75 characters using PHP.

I have searched everywhere and got nothing, except for this: http://dailycoding.com/tools/RandomNumber.aspx

I do not think it is effective to grab it from that page.

What I have tried is this:

rand(1,9999999999999999999999999999999999999);

</div>

Answer 1

try this

function bigNumber() {
    # prevent the first number from being 0
    $output = rand(1,9);

    for($i=0; $i<74; $i++) {
        $output .= rand(0,9);
    }

    return $output;
}