Email validation error in PHP -
i have build form , and link emailvalidation.php send data on mail. facing error in php code on line 37. don't know error.
error: fatal error: call undefined function
checkdnsrr()ing:\pleskvhosts\domain.com\httpdocs\php\functions\emailvalidation.phpon line 37
php code:
<?php function validemail($emailaddress) { $isvalid = true; $atindex = strrpos($emailaddress, "@"); if (is_bool($atindex) && !$atindex) { $isvalid = false; } else { $domain = substr($emailaddress, $atindex + 1); $local = substr($emailaddress, 0, $atindex); $locallen = strlen($local); $domainlen = strlen($domain); if ($locallen < 1 || $locallen > 64) { // local part length exceeded $isvalid = false; } else if ($domainlen < 1 || $domainlen > 255) { // domain part length exceeded $isvalid = false; } else if ($local[0] == '.' || $local[$locallen - 1] == '.') { // local part starts or ends '.' $isvalid = false; } else if (preg_match('/\\.\\./', $local)) { // local part has 2 consecutive dots $isvalid = false; } else if (!preg_match('/^[a-za-z0-9\\-\\.]+$/', $domain)) { // character not valid in domain part $isvalid = false; } else if (preg_match('/\\.\\./', $domain)) { // domain part has 2 consecutive dots $isvalid = false; } else if (!preg_match('/^(\\\\.|[a-za-z0-9!#%&`_=\\/$\'*+?^{}|~.-])+$/', str_replace("\\\\", "", $local))) { // character not valid in local part unless // local part quoted if (!preg_match('/^"(\\\\"|[^"])+"$/', str_replace("\\\\", "", $local))) { $isvalid = false; } } if ($isvalid && !(checkdnsrr($domain, "mx") || checkdnsrr($domain, "a"))) { // domain not found in dns $isvalid = false; } } return $isvalid; } ?>
you call this
checkdnsrr and function not supported in php version
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