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email.php
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email.php
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<?php
/** Needs */
require 'config.php';
function emailValidate($eml){
$eml = filter_var($eml, FILTER_SANITIZE_EMAIL);
if (filter_var($eml, FILTER_VALIDATE_EMAIL) === false) {
return $rslt = "invalid";
}
else return $eml;
}
function emailVerify($eml)
{
$url = 'http://apilayer.net/api/check?access_key=';
$api = Credentials::Mail_Layer_API_Key;
$curl = $url . $api . "&email=" . $eml . "&catch_all=1";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "$curl");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$rslt = curl_exec($ch);
// print_r($rslt);
if (curl_errno($ch)) {
curl_close($ch);
return $rslt = "problem";
}
curl_close($ch);
return $rslt;
}
function processResult($rslt){
$jsn = json_decode($rslt, true);
// print_r($jsn);
$valid = $jsn['format_valid'];
$mx = $jsn['mx_found'];
$smtp = $jsn['smtp_check'];
$role = $jsn['role'];
$disp = $jsn['disposable'];
// //evaluate email
$rslt = ""; //set arbitrary good result
if ($valid == false) return $rslt = "invalid";
if ($mx == false) return $rslt = "bad"; //domain is bad
if ($smtp == false) return $rslt = "bad"; // user is bad
if ($role == true) return $rslt = "role"; // is a role email like info, service, etc
if ($disp == true) return $rslt = "disposable"; // is disposable like mailinator
if ($rslt == "") return $rslt = "good"; //passed all the checks
else return $rslt = "problem";//something went wrong with how the data was handled
}
/** check that email is valid */
$eml = htmlspecialchars($_REQUEST['eml']);
$rslt = emailValidate($eml);
if ($rslt == "invalid") {
echo $rslt;
return;
}
$rslt = emailVerify($eml); //verify email through api
$rslt = processResult($rslt); //process api result
//print_r($rslt);
if ($rslt === "role" || $rslt === "disposable" || $rslt === "problem" ) {
echo "invalid";
return;
}
if ($rslt === "bad"){
echo $rslt;
return;
}
/** see if email is in the db already */
if ($rslt === "good") {
try {
$sql = "SELECT * FROM email WHERE email = :email";
$db = DB::getDB();
$stmt = $db->prepare($sql);
$stmt->bindValue(':email', $eml, PDO::PARAM_STR);
$stmt->setFetchMode(PDO::FETCH_ASSOC);
$stmt->execute();
$rslt = $stmt->fetchAll(PDO::FETCH_ASSOC);
if ($stmt->rowCount() !== 0) {
$db = null;
echo "exists";
return;
};
}
catch (PDOException $e)
{
echo "Error: " . $e->getMessage();
$db = null;
return;
}
/** write email to db */
try {
$cmd = "INSERT INTO email ( id, email ) VALUES ('', :email)";
$con = DB::getDB();
$stmt = $con->prepare($cmd);
$stmt->bindParam(':email', $eml);
$stmt->execute();
echo "success";
$db = null;
return;
} catch (PDOException $e) {
echo "Error: " . $e->getMessage();
echo "problem";
$db = null;
return;
}
}