Answers for "generate 6 digit random char in php"

php generate random string of characters

function generateRandomString($length = 25) {
    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $charactersLength = strlen($characters);
    $randomString = '';
    for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, $charactersLength - 1)];
    }
    return $randomString;
}
//usage 
$myRandomString = generateRandomString(5);

generate random number of 4 digit in php

<?php
$FourDigitRandomNumber = mt_rand(1111,9999);
echo $FourDigitRandomNumber;
?>