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PHP---JSON-Email-Verification

This is a short, simple, and straight forward script to perform some basic verification on a submitted email address. Can be used either as a PHP include/require or as a straight up URL with one GET variable so that one can use it with just about any other language such as JavaScript, etc. When calling through a URL with another language such as JavaScript, the output is returned as a JSON string.

{"format_verified":1,"error":0,"domain_verified":1,"message":"Formatting and domain have been verified"}

["format_verified"] => 1 (BOOL)
["error"] => 0 (BOOL)
["domain_verified"] => 1 (BOOL)
["message"] => "Formatting and domain have been verified" (STRING)

This has only been developed and tested on a CentOS Apache setup with PHP 5.4.21 .

Options

Option	Type	Notes
address_to_verify	STRING	The email address that you are wanting to verify
verbose	BOOL	Return more detailed error messages

PHP Methods

Method	Passed Options	Return	Purpose
verify_domain()	$address_to_verify	TRUE if MX record has been verified. FALSE otherwise	Verify that an MX record exists for the domain name in the email address passed to the method
verify_formatting()	$address_to_verify, $verbose	TRUE if email address is formatted as it should. If the address is not formatted correctly, then the address will return FALSE if $verbose is not set or a STRING message if $verbose IS set.	Verify that the email address passed to the method is formatted correctly
convert_html_to_plain_txt()	$content, $remove_links	The plain text of the HTML code that was submitted	To take the HTML code submitted and remove all the HTML code sections out of the block. If $remove_links is set to TRUE, then the address from < a > links will be gone. FALSE is the default for $remove_links and will instead leave the address from < a > links in the returned plain text string.

JavaScript Example:

Using jQuery:

$(function(){
	$("#js_verify").click(function(){
		$.getJSON("EmailVerify.class.php", { "address_to_verify" : $("#email").val() }, function(data){
			alert(data.message);
			return false;
		});
		return false;
	});
});

PHP Example:

require_once("EmailVerify.class.php");
$verify = new EmailVerify();

if($verify->verify_formatting($_POST['email'])){
	echo "Email is formated correctly<BR>\r\n";
}else{
	echo "Email is NOT formated correctly<BR>\r\n";
}

if($verify->verify_domain($_POST['email'])){
	echo "Domain has been verified<BR>\r\n";
}else{
	echo "Domain has NOT been verified<BR>\r\n";
}

$plain_text = $verify->convert_html_to_plain_txt($html_email_content_to_convert);

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