Question

How to generate 20 digits random number in PHP

Answer 1

function Generate20DigitsRandomNumber() {
    $s = '';
         
    for ($i = 0; $i < 20; $i++) {
        $s .= rand(1, 9);
    } 
         
    if (!is_numeric($s)) {
        echo "Error: Unable to parse number\n";
        return -1;
    }
    
    echo $s . "\n";
     
    return (float)$s;
}
 
echo Generate20DigitsRandomNumber();



/*
run:

16438469154231764588
1.6438469154232E+19

*/

 

70+ SQL courses for beginners and professionals