checkEmailForMySite.php

<?php

// http://www.tabimoba.net/entry/2014/02/08/154120#.V9JP2pOLS34
// https://github.com/symfony/symfony/issues/18177
// http://qiita.com/ShibuyaKosuke/items/0b9a8fddaefb2060a14a

// より精密にフォーマットチェック&DNSチェック
// 利用できる特殊記号 半角英数字 . _ -
function checkEmailwithDNS($email, $check_dns = false) {
    switch (true) {
        case !filter_var($email, FILTER_VALIDATE_EMAIL):
        case !preg_match("/^([a-zA-Z0-9])+([a-zA-Z0-9\._-])*@([a-zA-Z0-9_-])+([a-zA-Z0-9\._-]+)+$/", $email):
        case !preg_match('/@([\w.-]++)\z/', $email, $m):
            return false;
        case !$check_dns:
        case checkdnsrr($m[1], 'MX'):
        case checkdnsrr($m[1], 'A'):
        case checkdnsrr($m[1], 'AAAA'):
            return true;
        default:
            return false;
    }
}


$emails = array(
	 '[email protected]'
	,'[email protected]'
	,'a"[email protected]'
	,'a@[email protected]'
	,'a#[email protected]'
	,'[email protected]'
	,'a%[email protected]'
	,'a&[email protected]'
	,'a`[email protected]'
	,'a([email protected]'
	,'a)[email protected]'
	,'[email protected]'
	,'[email protected]'
	,'[email protected]'
	,'a|[email protected]'
	,'a\[email protected]'
	,'a^[email protected]'
	,'a:[email protected]'
	,'a;[email protected]'
	,'a*[email protected]'
	,'[email protected]'
	,'[email protected]'
	,'a<[email protected]'
	,'a>[email protected]'
	,'a>[email protected]'
	,'a,[email protected]'
	,'a`[email protected]'
	,'a[[email protected]'
	,'a][email protected]'
	,'a{[email protected]'
	,'a}[email protected]'
	,'a}[email protected]'
	,'¥[email protected]'
	,'[email protected]'
	,'"[email protected]'
	,'@[email protected]'
	,'#[email protected]'
	,'[email protected]'
	,'%[email protected]'
	,'&[email protected]'
	,'([email protected]'
	,')[email protected]'
	,'[email protected]'
	,'[email protected]'
	,'|[email protected]'
	,'\[email protected]'
	,'^[email protected]'
	,':[email protected]'
	,';[email protected]'
	,'*[email protected]'
	,'[email protected]'
	,'[email protected]'
	,'<[email protected]'
	,'>[email protected]'
	,',[email protected]'
	,'`[email protected]'
	,'[[email protected]'
	,'][email protected]'
	,'{[email protected]'
	,'}[email protected]'
	,'[email protected]'
	,'[email protected]'
	,'[email protected]'
	,'[email protected]'
	,'abc@@vwx.yz'
	,'[email protected]'
);

$ng_emails = array();
$ok_emails = array();

foreach ($emails as $email) {

	if (checkEmailwithDNS($email, true)) {
		// echo '(^-^):'.$email."\n";
		$ok_emails[] = $email;
	} else {
		// echo '(>_<):'.$email."\n";
		$ng_emails[] = $email;
	}
}

echo "\n[OK (^-^) EMAIL LIST]\n";
if (!empty($ok_emails)) {
	foreach ($ok_emails as $email) {
		echo $email."\n";
	}
}

echo "\n[NG (>_<) EMAIL LIST]\n";
if (!empty($ng_emails)) {
	foreach ($ng_emails as $email) {
		echo $email."\n";
	}
}