integrate hubspot forms submit with laravel/guzzle

[CHolt123]

Hello All, hoping you can help me. I am trying to use php and guzzle to process a for m dynamically. below is my submit request:

$client = new \GuzzleHttp\Client([

            'headers' => ['Content-Type' => 'application/json']

             ]);

        $arr = [

                    [

                        "skipValidation" => true,

                        "fields" => [

                            ["name" => "firstname", "value" => $request->input("first")],

                            ["name" => "lastname", "value" => $request->input("last")],

                            ["name" => "phone", "value" => $request->input("phone")],

                            ["name" => "email", "value" => $request->input("email")],

                            ["name" => "source", "value" => $request->input("LeadSource")],

                            ["name" => "ls", "value" => $request->input("Lead_Source_Description__c")],

                            ["name" => "utm_medium", "value" => $request->input("pLIUTMMedium")],

                            ["name" => "utm_campaign", "value" => $request->input("pLIUTMCampaign")],

                            ["name" => "utm_source", "value" => $request->input("pLIUTMSource")],

                            ["name" => "utm_content", "value" => $request->input("pLIUTMContent")],

                            ["name" => "utm_term", "value" => $request->input("pLIUTMTerm")],

                            ["name" => "adcampaign", "value" => $request->input("Advertising_Campaign__c")]

                        ]

                    ]

        ];

        $post_json = json_encode($arr);

            print_r($post_json);

        $response = $client->post('https://api.hsforms.com/submissions/v3/integration/submit/$portal_id/$form_id', 

            [

                "body" =>  $post_json

            ]

        )->getBody();

        $result = json_decode($response);

The error I keep getting is:

resulted in a `400 Bad Request` response:

{"status":"error","message":"Invalid input JSON on line 1, column 1: Cannot deserialize instance of `com.hubspot.formsub 

[Teun · Accepted solution]

Hi @CHolt123, Allthough I do not know where it goes wrong with your code, I thought it might be helpfull to share my PHP script which we use to submit to a specific form:

// Default settings
    $baseURL = 'https://forms.hubspot.com/uploads/form/v2/';
    // Portal ID of client
    $portalId = '';

    // Hubspot Form ID (grabbed from URL)
    $hubspot_form = '';

    $params = '';

    // Loop through all post values and build URL params, example: FirstName=Teun&LastName=Rutten
    foreach($post as $key => $value) {
      if ( ! empty( $value ) ) {
        $name = $key;
        $params = $params . $name . '=' . urlencode($value) . "&";
      }
    }

    $hubspotutk      = isset($_COOKIE['hubspotutk']) ? $_COOKIE['hubspotutk'] : ''; //grab the cookie from the visitors browser.
    $ip_addr         = $_SERVER['REMOTE_ADDR']; //IP address too.
    
    $hs_context      = array(
      'hutk' => $hubspotutk,
      'ipAddress' => $ip_addr,
      'pageUrl' => $post['url'],
      'pageName' => isset($post['page']) ? $post['page'] : ''
    );
    $hs_context_json = json_encode($hs_context);
    $params = $params . '&hs_context=' . urlencode($hs_context_json);

    // Prepare URL
    $endpoint = $baseURL . $portalId . '/' . $hubspot_form;

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
    curl_setopt($ch, CURLOPT_URL, $endpoint);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
        'Content-Type: application/x-www-form-urlencoded'
    ));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response    = curl_exec($ch); //Log the response from HubSpot as needed.
    $status_code = curl_getinfo($ch, CURLINFO_HTTP_CODE); //Log the response status code
    curl_close($ch);
    return $response . ' ' . $status_code;
  }