Генератор ИНН

itn.php

<?php
function random_number($length=1){ 
	$number = array();
	for($i=0; $i < $length; $i++){
		$number[] = mt_rand(0,9);
	}
	return $number;
}

function company_itn(){
	$n = random_number(9);
	array_unshift($n,0); //for checksum indexes
	$n[] = ((2*$n[1] + 4*$n[2] + 10*$n[3] + 3*$n[4] + 5*$n[5] + 9*$n[6] + 4*$n[7] + 6*$n[8] + 8*$n[9]) % 11) % 10;
	array_shift($n);
	return implode($n);
}

function personal_itn(){
	$n = random_number(10);
	$n[] = (($n[0]*7+$n[1]*2+$n[2]*4+$n[3]*10+$n[4]*3 +$n[5]*5+$n[6]*9+$n[7]*4+$n[8]*6+$n[9]*8)%11)%10; 
    $n[] = (($n[0]*3+$n[1]*7+$n[2]*2+$n[3]*4 +$n[4]*10+$n[5]*3+$n[6]*5+$n[7]*9+$n[8]*4+$n[9]*6+$n[10]*8)%11)%10; 
	return implode($n);
}

$opts = getopt('n:t:');
$caller = $opts['t'].'_itn';
for($i=0; $i < $opts['n']; $i++){
	echo $caller().PHP_EOL;
}