PHP - Variable Not Being Passed To Include

Hi All,

I've been trying to access xml data from an API feed, but it needs a Variable to be passed to an include file without a form. the include is at the header of the page.

in the code below, i'm trying to retrieve the variable $project_add from the $xml_2 feed. $proj_add_ID comes from another feed and is being passed ok. 

foreach ($projects_1 as $proj_1) {

                        $job_no =$proj_1['job_no'];
                        $job_name =$proj_1['job_name'];
                        $job_status =$proj_1['job_status'];
                        $job_staff =$proj_1['job_staff'];
                        $job_due =$proj_1['job_due'];
                        $clr_1 = $colors_1[$job_status];
                        
                        if ($err_2) {
                        echo "cURL Error #:" . $err_2;
                         } else {
                        $_POST['job_id']= $job_no;
                        $xml_2=simplexml_load_string($response_2) or die("Error: Cannot create object");
                        $proj_add = $xml_2->xpath("CustomFields/CustomField[ID ='$proj_add_ID']");                         
                            foreach($proj_add as $item_2) {
                            $project_add = "$item_2->Text";
                        }            
                        echo "<div class='row no-gutters'>";
                        echo "<div class='col-sm bg-white border rounded'><a href='managejob.php?job_id=$job_no' class='text-left ml-1'><strong>$job_no</strong></a></div>";
                        echo "<div class='col-sm-2 bg-white border rounded'><p class='text-left ml-1'>$job_name</p></div>";                         
                        echo "<div class='col-sm-2 bg-white border rounded'><p class='text-left ml-1'></p>$project_add</div>";                        
                        echo "<div class='col-sm-2 bg-white border rounded'>" . state_dropdown_1($job_no, $job_status, $clr_1) . "</div>";                        
                        echo "<div class='col-sm-2 bg-white border rounded'><p class='text-left ml-1'>$job_staff</p></div>"; 
                        echo "<div class='col-sm-2 bg-white border rounded'><form action='CALL_API_PUTTaskDate.php' method='POST'>"
                                . "<input type='hidden' name='task_ID' value ='". $jdata['task_ID'] ."'>"
                                . "<input type='hidden' name='est_min' value ='". $jdata['est_min'] ."'>"
                                . "<input class ='form-control bg-white text-dark font-weight-bold' type='date' name='start_date' value='" . date('Y-m-d', strtotime( $jdata['display_date_1'] )) . "' onchange='this.form.submit()'>"
                                . "</form></div>";
                        echo "<div class='col-sm bg-white border rounded'><p class='text-left ml-1 mt-1'><strong>" . date('d/m/Y', strtotime( $jdata['display_date'])) . "</strong></p></div></div>";
                        
                       }

The include file is like this

/ collect Custom Felds
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // collect value of status input field
    $job_no = $_REQUEST['job_id'];
      } 

if (isset($_POST['job_id'])) {
$job_no = $_POST['job_id'];
}

if (isset($_GET['job_id'])) {
$job_no = $_GET['job_id'];
}

$curl_2 = curl_init();

curl_setopt_array($curl_2, array(
  CURLOPT_URL => "https://api.xxx.com/job.api/get/$job_no/customfield?apiKey=xxx&accountKey=xxx",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => array(
    "Accept: */*",
    "Accept-Encoding: gzip, deflate",
    "Cache-Control: no-cache",
    "Connection: keep-alive",
    "Host: api.xxx.com",
    "Postman-Token: xxx",
    "User-Agent: PostmanRuntime/7.17.1",
    "cache-control: no-cache"
  ),
));

$response_2 = curl_exec($curl_2);
$err_2 = curl_error($curl_2);

curl_close($curl_2);

The problem is the variable $job_no isn't getting passed to CURLOPT_URL so it's not retrieving the data required. i need to be able to retrieve this data without submitting a form as it's in a foreach loop and the Id is specific to each iteration. is there a way to do this? I have been able to achieve this by putting the include within the div tags that it will be displayed but it just slows down everything too much and hangs. 

Any help will be much appreciated. 

Kind regards,

Michael Bennington.