/**
* Check email address validity
* @param strEmailAddress Email address to be checked
* @return True if email is valid, false if not
*/
public static function check_email_address($strEmailAddress)
{
// If magic quotes is "on", email addresses with quote marks will
// fail validation because of added escape characters. Uncommenting
// the next three lines will allow for this issue.
//if (get_magic_quotes_gpc()) {
// $strEmailAddress = stripslashes($strEmailAddress);
//}
// Control characters are not allowed
if (preg_match('/[\\x00-\\x1F\\x7F-\\xFF]/', $strEmailAddress)) {
return false;
}
// Split it into sections using last instance of "@"
$intAtSymbol = strrpos($strEmailAddress, '@');
if ($intAtSymbol === false) {
// No "@" symbol in email.
return false;
}
$arrEmailAddress[0] = substr($strEmailAddress, 0, $intAtSymbol);
$arrEmailAddress[1] = substr($strEmailAddress, $intAtSymbol + 1);
// Count the "@" symbols. Only one is allowed, except where
// contained in quote marks in the local part. Quickest way to
// check this is to remove anything in quotes.
$arrTempAddress[0] = preg_replace('/"[^"]+"/', '', $arrEmailAddress[0]);
$arrTempAddress[1] = $arrEmailAddress[1];
$strTempAddress = $arrTempAddress[0] . $arrTempAddress[1];
// Then check - should be no "@" symbols.
if (strrpos($strTempAddress, '@') !== false) {
// "@" symbol found
return false;
}
// Check local portion
if (!EmailAddressValidatorUtil::check_local_portion($arrEmailAddress[0])) {
return false;
}
// Check domain portion
if (!EmailAddressValidatorUtil::check_domain_portion($arrEmailAddress[1])) {
return false;
}
// If we're still here, all checks above passed. Email is valid.
return true;
}