How to convert integer from ip address using php? (ip2long)

$lower = "IP ADDRESS";
echo $lower_dec = (float)sprintf("%u",ip2long($lower));

Generate Password in alphanumeric using PHP

$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$password = substr( str_shuffle( $chars ), 0, $length );