From 4f6a0b17ed16803651ea2e79fb3e9a5e2be05c9b Mon Sep 17 00:00:00 2001
From: cmp167 <you@example.com>
Date: Fri, 2 Sep 2022 10:45:07 +1200
Subject: [PATCH] Add isINN and isSnils

---
 cmpUtil.php | 88 +++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 86 insertions(+), 2 deletions(-)

diff --git a/cmpUtil.php b/cmpUtil.php
index 968814b..607c2fb 100644
--- a/cmpUtil.php
+++ b/cmpUtil.php
@@ -207,10 +207,15 @@
 				"output" => $out
 			);
 
-			$err = @file("/tmp/fgExec.err");
+			$ff = "/tmp/fgExec.err";
+
+			$err = @file($ff);
 			// var_export($err);
 
-			for($i = 0; $i < count($err); $i++) {
+			if(!is_array($err)) {
+				$a["stderr"][] = "Can't read file: $ff";
+			}
+			else for($i = 0; $i < count($err); $i++) {
 				$str = trim($err[$i], "\r\n");
 
 				// $this->d($str);
@@ -322,6 +327,85 @@
 			return null;
 		}
 
+		function isINN($inn) {
+			$inn = (string) $inn;
+
+			if(!preg_match("/^[0-9]{10,12}$/", $inn)) {
+				return null;
+			}
+
+			switch(strlen($inn)) {
+				case 10:
+					$n = 0;
+
+					foreach([2, 4, 10, 3, 5, 9, 4, 6, 8] as $i => $k) {
+						$n += $k * (int) $inn[$i];
+					}
+
+					$n10 = $n % 11 % 10;
+
+					if($n10 === (int) $inn[9])
+						return true;
+
+					return false;
+
+				case 12:
+					$n = 0;
+
+					foreach([7, 2, 4, 10, 3, 5, 9, 4, 6, 8] as $i => $k) {
+						$n += $k * (int) $inn[$i];
+					}
+
+					$n11 = $n % 11 % 10;
+
+					$n = 0;
+
+					foreach([3, 7, 2, 4, 10, 3, 5, 9, 4, 6, 8] as $i => $k) {
+						$n += $k * (int) $inn[$i];
+					}
+
+					$n12 = $n % 11 % 10;
+
+					if(($n11 === (int) $inn[10]) && ($n12 === (int) $inn[11]))
+						return true;
+
+					return false;
+			}
+
+			return false;
+		}
+
+		function isSnils($snils) {
+			$snils = (string) $snils;
+
+			if(!preg_match("/^[0-9]{11}$/", $snils)) {
+				return null;
+			}
+
+			$sum = 0;
+
+			for($i = 0; $i < 9; $i++) {
+				$sum += (int) $snils[$i] * (9 - $i);
+			}
+
+			$cs = 0;
+
+			if ($sum < 100) {
+				$cs = $sum;
+			} elseif ($sum > 101) {
+				$cs = $sum % 101;
+				if ($cs === 100) {
+					$cs = 0;
+				}
+			}
+
+			if($cs === (int) substr($snils, -2)) {
+				return true;
+			}
+
+			return false;
+		}
+
 		// END
 	}