From 288501be642a4b2a9b38db3c26b24db9b1ea8a0e Mon Sep 17 00:00:00 2001
From: eekdood <eric@fawcett.ws>
Date: Tue, 17 Oct 2017 13:20:55 -0400
Subject: [PATCH] Fix email validation

Replace preg_match() with filter_var() for more accurate and reliable email validation.
---
 sendform.php | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/sendform.php b/sendform.php
index 052fc50..64098f6 100644
--- a/sendform.php
+++ b/sendform.php
@@ -2,7 +2,7 @@
 	/************************************************************************
 	 *	SendForm Version 0.99.1						*
 	 *	Created 10 May 2005						*
-	 *	Modified 12 Oct 2017						*
+	 *	Modified 17 Oct 2017						*
 	 *	Questions/Comments: eric.fawcett@gmail.com   			*
 	 *									*
 	 *	COPYRIGHT NOTICE						*
@@ -228,7 +228,7 @@
 			badreferer($theDomain);
 	}
 	function errormail($errormsg) {
-		if (validemail($errorTo)) mail($errorTo, 'Error on Accu-Trim Form', $errormsg, $headers);
+		if (validemail($errorTo)) mail($errorTo, 'Error on form', $errormsg, $headers);
 	}
 	function fillrecipients() {
 		global $recipients;
@@ -284,12 +284,7 @@
 		#return $matches[0];
 	}
 	function validemail($email) {
-		// define a regular expression for "normal" addresses
-		$normal = "^[a-z0-9_\+-]+(\.[a-z0-9_\+-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*\.([a-z]{2,4})$"; 
-		// define a regular expression for "strange looking" but syntactically valid addresses
-		$validButRare = "^[a-z0-9,!#\$%&'\*\+/=\?\^_`\{\|}~-]+(\.[a-z0-9,!#\$%&'\*\+/=\?\^_`\{\|}~-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*\.([a-z]{2,})$";
-		if (preg_match($normal, $email)) return true;
-		else if (preg_match($validButRare, $email)) return true;
+		if (filter_var($email, FILTER_VALIDATE_EMAIL)) return true;
 		else return false;
 	}
 	function writeStyles() {