How to generate random password with PHP?

Question

Or is there a software to auto generate random passwords?

Answer 1

here is a function that generates a password with a minimum length, a minimum number of digits and a minimal number of letters.

function generatePassword() {
$min_length=8;  //Minimum length of the password
$min_numbers=2; //Minimum of numbers AND special characters
$min_letters=2; //Minimum of letters

$password = '';
$numbers=0;
$letters=0;
$length=0;

while ( $length <= $min_length OR $numbers <= $min_numbers OR $letters <= $min_letters) {
    $length+=1;
    $type=rand(1, 3);
    if ($type==1) {
        $password .= chr(rand(33, 64)); //Numbers and special characters
        $numbers+=1;
    }elseif ($type==2) {
        $password .= chr(rand(65, 90)); //A->Z
        $letters+=1;
    }else {
        $password .= chr(rand(97, 122)); //a->z
        $letters+=1;
    }

}
return $password;   
}