SendEmail - Example of the code submission (PHP)

try {
                // Set the REST API URL
                $restURL = "https://api.enginemailer.com/RESTAPI/Submission/SendEmail";
                
                // Initiate the cURL Method with the REST API URL Specified Previously.
                $client = curl_init($restURL);
                
                // Declare the SubstitutionObject first to be used as Dynamic Variables, if there are none then this is not needed.
                // Dynamic Variables to be Replaced
                $SubstitutionObject->Key = "Dynamic Variables";
                // Dynamic Value to Replace
                $SubstitutionObject->Value = "Dynamic Value";
                
                // Declare the AttachmentObject first to be used as Attachments, if there are none then this is not needed.
                // File name
                $AttachmentObject->Filename = "Test.docx";
                // Base64 encoded content of the attachment
                $base64string = "SG93IHRvIGRlYnVnIFNRTCBTdG9yZWQgUHJvY2VkdXJlDQoNCjEuIExvY2FsIG9ubHkgLSBBenVyZSAoTm8pDQoyLiBQdXQgYnJlYWtwb2ludCBhdCBFWEVDIHN0YXRlbWVudA0KMy4gQ2xpY2sgRGVidWcNCjQuIE9uY2UgaGl0IGJyZWFrcG9pbnQsIHByZXNzIEYxMSB0byBzdGVwIGludG8gdGhlIHN0b3JlZCBwcm9jZWR1cmUu";
                
                $ AttachmentObject ->Content = $base64string;
                
                // Create the JSON Object with the UserKey, Parameters, CampaignName, ToEmail, Subject, SenderEmail, SubmittedContent(Email Body), SenderName and SubstitutionTags
                // Enter the UserID in $User that is found in the Profile Page
                $jsonObject->UserKey = "UserID from Profile Page"; 
                // Campaign Name
                $jsonObject->CampaignName = "Campaign Name"; 
                // Email Address to send to
                $jsonObject->ToEmail = "Email To Send To";
                // Subject of the Email
                $jsonObject->Subject = "Subject of the Email";
                // Sender's Email, please take note that the Domain of the Sender's 
                // Email have to be the same as the Domain Specified in the Portal.
                $jsonObject->SenderEmail = "Sender's Email";
                // Content of the Email
                $jsonObject->SubmittedContent = "Email Body";
                // Name of the Sender
                $jsonObject->SenderName = "Sender's Name"; 
                // Leave Empty with array() if there are no Dynamic Variables.
                $jsonObject->SubstitutionTags = array($SubstitutionObject); 
                
                // Leave Empty with array() if there are no Attachments.
                $jsonObject->Attachments = array($AttachmentObject);
                
                // Encode the Json Object into a String
                $jsonEncoded = json_encode($jsonObject);
                
                // Return the Transfer as String
                curl_setopt($client, CURLOPT_RETURNTRANSFER, true); 
                // Use POST Method
                curl_setopt($client, CURLOPT_POST, true); 
                // The Post Parameters that we will be Passing
                curl_setopt($client, CURLOPT_POSTFIELDS, $jsonEncoded); 
                // Calls the Rest API
                $curl_response = curl_exec($client);
                curl_close($client);
}
catch (Exception $e)
{
                echo 'Caught exception: ',  $e->getMessage(), "\n";
}