SendGrid Curl Api

gistfile1.txt

$url = 'https://api.sendgrid.com/';
$user = ' ';
$pass = '';
$json_string = array(
    'to' => array('nauman@lbatechnologies.com')
);
$params = array(
    'api_user' => $user,
    'api_key' => $pass,
    'x-smtpapi' => json_encode($json_string),
    'to' => $toMain,
    'subject' => 'testing',
    'html' => 'heel',
    'text' => 'heel',
    'from' => 'school@test.com',
);



$request = $url . 'api/mail.send.json';
// Generate curl request
$session = curl_init($request);
// Tell curl to use HTTP POST
curl_setopt($session, CURLOPT_POST, true);
// Tell curl that this is the body of the POST
curl_setopt($session, CURLOPT_POSTFIELDS, $params);
// Tell curl not to return headers, but do return the response
curl_setopt($session, CURLOPT_HEADER, false);
// Tell PHP not to use SSLv3 (instead opting for TLS)
curl_setopt($session, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1_2);
curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
// obtain response
$response = curl_exec($session);
curl_close($session);
// print everything out
$result = json_decode($response);
var_dump($result);
die($result);