PHP - Variables Returning Blank Values!

SELECT u.firstname AS 'Name' , u.lastname AS 'Surname', c.shortname AS 'Course', (
            CASE
            WHEN gi.itemname LIKE '%summative%' THEN 'SUMMATIVE'
            WHEN gi.itemname LIKE '%formative 2%' THEN 'FORMATIVE 2'
            ELSE 'MC'
            END) AS 'Assessment', from_unixtime(gi.timemodified, '%d/%m/%y') AS 'Date',
            IF (ROUND(gg.finalgrade / gg.rawgrademax * 100 ,2) > 70,'Yes' , 'No') AS Pass, ROUND(gg.finalgrade / gg.rawgrademax * 100 ,2) AS 'Mark', ROUND(gg.finalgrade / gg.rawgrademax * 100 ,2) AS 'Mark'
            FROM mdl_course AS c
            JOIN mdl_context AS ctx ON c.id = ctx.instanceid
            JOIN mdl_role_assignments AS ra ON ra.contextid = ctx.id
            JOIN mdl_user AS u ON u.id = ra.userid
            JOIN mdl_grade_grades AS gg ON gg.userid = u.id
            JOIN mdl_grade_items AS gi ON gi.id = gg.itemid
            JOIN mdl_course_categories AS cc ON cc.id = c.category
            WHERE gi.courseid = c.id
            AND gi.itemname != 'Attendance'
            AND u.firstname LIKE '%03%'
            AND gi.itemname LIKE '%mative%'
            ORDER BY  `Name` , `Surname` , `Course`, `Assessment` ASC

Name 		Surname		Category 	Module 		Course 		Assessment 	Date 		Competent 	Mark 	
G03 Itumeleng 	Velmah Mokwa 	Fundamentals 	Communications 	CO1 119472 	FORMATIVE 2 	07/04/14 	Yes 		100.00
G03 Itumeleng 	Velmah Mokwa 	Fundamentals 	Communications 	CO1 119472 	SUMMATIVE 	07/04/14 	Yes 		100.00
G03 Itumeleng 	Velmah Mokwa 	Fundamentals 	Communications 	CO2 119457 	FORMATIVE 2 	05/04/14 	Yes 		100.00
G03 Itumeleng 	Velmah Mokwa 	Fundamentals 	Communications 	CO2 119457 	SUMMATIVE 	05/04/14 	Yes 		88.00
G03 Lally 	Sheila Mokane 	Fundamentals 	Communications 	CO1 119472 	FORMATIVE 2 	07/04/14 	NYC 		59.00
G03 Lally 	Sheila Mokane 	Fundamentals 	Communications 	CO1 119472 	SUMMATIVE 	07/04/14 	Yes 		90.00
G03 Lally 	Sheila Mokane 	Fundamentals 	Communications 	CO2 119457 	FORMATIVE 2 	05/04/14 	Yes 		100.00
G03 Lally 	Sheila Mokane 	Fundamentals 	Communications 	CO2 119457 	SUMMATIVE 	05/04/14 	Yes 		98.00

function print_overview_table_groups($COURSE, $choosegroup, $fromdate, $todate, $numarray)
{
    global $DB;
    //check data
    if(!$choosegroup){
        die('No Records To Display.');
    }
   
    $thisgroup = $numarray[$choosegroup];
       
        $sql = "SELECT DISTINCT u.firstname AS 'Name' , u.lastname AS 'Surname', 
			(CASE
			WHEN cc.parent = '2' THEN 'Fundamentals'
			WHEN cc.parent = '3' THEN 'Core'
			WHEN cc.parent = '4' THEN 'Elective'			
			END) AS 'Category',
			cc.name AS 'Module', 
			c.shortname AS 'Course', 
			(CASE
			WHEN gi.itemname LIKE '%summative%' THEN 'SUMMATIVE'
			WHEN gi.itemname LIKE '%formative 2%' THEN 'FORMATIVE 2'
			ELSE 'MC'
			END) AS 'Assessment', from_unixtime(gi.timemodified, '%d/%m/%y') AS 'Date',
			IF (ROUND(gg.finalgrade / gg.rawgrademax * 100 ,2) > 70,'Yes' , 'NYC') AS Competent, ROUND(gg.finalgrade / gg.rawgrademax * 100 ,2) AS 'Mark'
			FROM mdl_course AS c
			JOIN mdl_context AS ctx ON c.id = ctx.instanceid
			JOIN mdl_role_assignments AS ra ON ra.contextid = ctx.id
			JOIN mdl_user AS u ON u.id = ra.userid
			JOIN mdl_grade_grades AS gg ON gg.userid = u.id
			JOIN mdl_grade_items AS gi ON gi.id = gg.itemid
			JOIN mdl_course_categories AS cc ON cc.id = c.category
			WHERE gi.courseid = c.id
			AND gi.itemname != 'Attendance'
			AND u.firstname LIKE '%03%'
			AND gi.itemname LIKE '%mative%'
			ORDER BY  `Name` , `Surname` , `Course`, `Assessment` ASC";

        return $DB->get_records_sql($sql);
   
}

$lists = print_overview_table_groups($COURSE, $choosegroup, $fromdate, $todate, $numarray);
   
	print "<pre>";
	print_r($lists);
	print "</pre>";

Array
(
    [G03 Itumeleng] => stdClass Object
        (
            [name] => G03 Itumeleng
            [surname] => Mokwa
            [category] => Fundamentals
            [module] => Communications
            [course] => CO2 119457
            [assessment] => SUMMATIVE
            [date] => 05/04/14
            [pass] => Yes
            [mark] => 88.00
        )

    [G03 Lally] => stdClass Object
        (
            [name] => G03 Lally
            [surname] => Mokane
            [category] => Fundamentals
            [module] => Communications
            [course] => CO2 119457
            [assessment] => SUMMATIVE
            [date] => 05/04/14
            [pass] => Yes
            [mark] => 98.00
        )

)

Hi,

I have a string with the value of

{ "success": true, "delivered": true, "contactDetailsRequired": false, "message": "Signed For by: D ANDERSON ", "signature": "https://webservices.thedx.co.uk/PodImage/ImageHandler.ashx?tn=906732192165", "date": "21-07-2020", "serviceLevelName": "Consigned", "time": "13:33:19", "trackedProductName": "DataExchange" }

How do i go about placing the values into variables so for example:

$success = "true";
$delivered = "true";
$message = "Signed for by: D ANDERSON";
etc....

My mind has gone blank and im having one of those days, any help would be greatly appreciated. Thanks

  $username = $_POST['uid'];
  $email = $_POST['mail'];
  $password = $_POST['pwd'];
  $passwordRepeat = $_POST['pwd-repeat'];
  $date = $_POST['date2'];
  $stream = $_POST['relationship'];

		$sql1 = "INSERT INTO users (uidUsers, emailUsers, pwdUsers, relationship) VALUES (?, ?, ?, ?);";
		$sql2 = "INSERT INTO Family1 (username, application_filed, relationship) VALUES (?, ?, ?);";
		$sql3 = "INSERT INTO Family2 (username, application_filed, relationship) VALUES (?, ?, ?);";
		mysqli_query($sql1, $conn);
		mysqli_query($sql2, $conn);
		mysqli_query($sql3, $conn);
		
   $stmt = mysqli_stmt_init($conn);
		if (!mysqli_stmt_prepare($stmt, $sql2)) {
          header("Location: ../signup.php?error=sqlerror");
          exit();
        }
		        else {

          mysqli_stmt_bind_param($stmt, "sss", $username, $date, $stream);
          $result = mysqli_stmt_get_result($stmt);
		  if ($row = mysqli_fetch_assoc($result))
		  ($username==$_SESSION['uid'] and $stream =='nursing');
			mysqli_stmt_execute($stmt);
		}
		
		if (!mysqli_stmt_prepare($stmt, $sql3)) {
          header("Location: ../signup.php?error=sqlerror");
          exit();
        }
		        else {

          mysqli_stmt_bind_param($stmt, "sss", $username, $date, $stream);
          $result = mysqli_stmt_get_result($stmt);
		  if ($row = mysqli_fetch_assoc($result))
		  ($username==$_SESSION['uid'] and $stream =='doctoral');
			mysqli_stmt_execute($stmt);
		}
		
        if (!mysqli_stmt_prepare($stmt, $sql1)) {
          header("Location: ../signup.php?error=sqlerror");
          exit();
        }

 if (!mysqli_stmt_prepare($stmt, $sql1)) {
          header("Location: ../signup.php?error=sqlerror");
          exit();
        }
        else {
          $hashedPwd = password_hash($password, PASSWORD_DEFAULT);
          mysqli_stmt_bind_param($stmt, "ssss", $username, $email, $hashedPwd, $stream);
          mysqli_stmt_execute($stmt);
          header("Location: ../signup.php?signup=success");
          exit();

I was wondering if someone could point me in the right direction. I have this code. They idea I had behind it is to insert values into different tables depending on variables being passed. 

So when user fills out a form and selects $stream="nursing" I want results to go to table 'users' and 'Family1', but not 'Family2' table. and if user selects $stream='doctoral' results should go to table 'users' and  'Family2', and not go to 'Family1'

But with my query I get results go to both table and also users table. And there is no restriction to what users selects, variable $stream being passed no matter what it is.

Is this the wrong way to go here? Did I completely mess up the logic?

<?PHP

class database {
	// Variables
	public $test;
	
	// Constructor
	public function __construct()
	{
		$test = "4";
	}
	
	
	// Functions
	//
	public function test()
	{
		var_dump($this->test);
	}
	
}

$test = new database;

$test->test();

?>