PHP - Funny: $_get[] Passed Only When Refreshed.... :-(

When I use the following code, it doesn't print out "test" until after I refresh the page.

unset($_SESSION["product"]);

if ( !empty($_SESSION["product"]) && ($_SESSION["product"] != NULL)) {
echo "test";
}

When I use:

var_dump($_SESSION["product"]);

It shows:

array(0) { } 

I'm wondering it that's the problem. That it's array(0) when it should be array().

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.

In my main script I set $errorArray with values when required survey questions go unanswered.

The ne code that checks for missing required values is working perfectly, and right before I pass $errorArray to a function which rebuilds the survey questions - this time with the error messages - I do a var_dump($errorArray) and that array has errors in it as expected.

But while my function that re-builds the survey questions gets called and does indeed re-build the survey questions, the $errorArray isn't getting pased for some strange reason?

(I'm not sure if i have ever passed an array to a function before.)

In my function I have...

	function generateSurveyItem($dbc, $questionNo, $questionID, $surveyResponseArray=NULL, $errorArray=NULL){
	 
	}
	

When I var_dump($errorArray) at the top of the function, and submit a blank form, I end up with a blank page and a file path to my PHP script ending with...

	/public_html/utilities/function.php:3010:null
	

Questions:

1.) What is happening?

2.) I thought =NULL in the parameter list just meant that the argument is "optional"?

3.) I am able to successfully pass $surveyResponseArray to this function, so what is up with $errorArray?

P.S.  When I run things, and submit an empty form - thus no "required" fields get completed - the survey gets re-displays, and any values chosen are "sticky", but my error messages should also be displayed to let the user know what is mising, and that is the part that isn't working?

This has to be something silly stupid to fix...

I am trying to pass a php variable to javascript but it's not working. This is the "sketch" of my code.

<?php
$url="asset/go/";
?>

<!DOCTYPE html>
<html>
    <head>
        <title>Page Title</title>
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>

    </head>
    <body>
        <script>
            var user="mayor";
            var url ='<?php echo json_encode($url); ?>';
       if(user=="mayor"){
           alert(url);
       }
        </script>
    </body>
</html>

As it is now, it comes with the output below:

<?php echo json_encode($url); ?>

If I remove the quotation around the php in d jQuery, it throws an error in syntax.

Also both codes are located in the same file named test.php

Thanks in advance.