/**
*
* @param string $cnpj
* @return boolean
*/
public static function checkCnpj($cnpj)
{
$cnpj = str_replace(array('.', '/', '-'), '', $cnpj);
$cnpj = trim($cnpj);
if (empty($cnpj) || strlen($cnpj) != 14) {
return FALSE;
} else {
if (ZendT_Lib::checkFake($cnpj, 14)) {
return FALSE;
} else {
$rev_cnpj = strrev(substr($cnpj, 0, 12));
for ($i = 0; $i <= 11; $i++) {
$i == 0 ? $multiplier = 2 : $multiplier;
$i == 8 ? $multiplier = 2 : $multiplier;
$multiply = $rev_cnpj[$i] * $multiplier;
$sum = $sum + $multiply;
$multiplier++;
}
$rest = $sum % 11;
if ($rest == 0 || $rest == 1) {
$dv1 = 0;
} else {
$dv1 = 11 - $rest;
}
$sub_cnpj = substr($cnpj, 0, 12);
$rev_cnpj = strrev($sub_cnpj . $dv1);
unset($sum);
for ($i = 0; $i <= 12; $i++) {
$i == 0 ? $multiplier = 2 : $multiplier;
$i == 8 ? $multiplier = 2 : $multiplier;
$multiply = $rev_cnpj[$i] * $multiplier;
$sum = $sum + $multiply;
$multiplier++;
}
$rest = $sum % 11;
if ($rest == 0 || $rest == 1) {
$dv2 = 0;
} else {
$dv2 = 11 - $rest;
}
if ($dv1 == $cnpj[12] && $dv2 == $cnpj[13]) {
return TRUE;
} else {
return FALSE;
}
}
}
}
