PHP - Query Suddenly Not Returning All Results

When using cURL, how would I be able to include a call inside my get_all that basically will loop through all the next_page, get and store the data and then output it to $response->data when the "next_page" parameter becomes null?

**Here is the method**:

    public function get_all()
    {
        return $response->data;
    }

**This is what $response->data is returning as of now** (The cURL code wasn't included here):

    "paginator": {
        "total": 3092,
        "per_page": 500,
        "current_page": 2,
        "last_page": 7,
        "prev_page": "https://oc.com/api/v1/employees/?page=1",
        "next_page": "https://oc.com/api/v1/employees/?page=3"
    },
    "data": [
            {
                "id": 1592,
            etc....

Here are all of my unsuccessful attempts:

        public function get_all()
        {
    
    //        $next_url = $response->paginator->next_page;
    //
    //        foreach ($response as $next => $next_page) {
    //            print_r2($next);
    //
    //            if ($next_url !== null) {
    //                $next_page = $response->data;
    //            }
    //        }
    
    //        foreach ($response as $paginator => $next_page) {
    //            if ($next_url !== null) {
    //                $return[] = $response->data;
    //            }
    //        }
    
    //        var_dump($response->paginator);
    
    //        if ($next_url !== null) {
    //            $this->get_all($path, $args, $next_url);
    //        }
    
            return $response->data;
        }

SELECT i.item_id, 
		         i.title, 
		         i.price,
		         i.p_and_p,
		         SUM(i.price + i.p_and_p) AS `total_price`,
		         i.listing,
		         i.condition,
		         i.start_date_time,
		         i.listing_duration,
		         CONVERT_TZ(DATE_ADD(i.start_date_time, INTERVAL concat(i.listing_duration) DAY), '+00:00', u.time_zone) AS `end_date_time`
		  FROM items i
		  LEFT JOIN sub_categories sc ON sc.sub_category_id = i.sub_category_id
		  LEFT JOIN categories c ON c.name = 'test'
		  JOIN users u
		  WHERE u.username = 'Destramic'
		  AND i.start_date_time < NOW() 
		  AND DATE_ADD(i.start_date_time, INTERVAL concat(i.listing_duration) DAY) >= NOW()

case "update-delete":
	if(isset($_POST['highlight-purchased'])) 
		{
			// ****** Setup customized query to obtain only items that are checked ******
			$sql = "SELECT * FROM shoplist WHERE";
					for($i=0; $i < count($_POST['checkboxes']); $i++)
						{
							$sql=$sql . " idnumber=" . $_POST['checkboxes'][$i] . " or";
						}
					$sql= rtrim($sql, "or");
											
			$statement = $conn->prepare($sql);
			$statement->execute();
																						
			// *** fetch results for all checked items (1st query) *** //
			$result = $statement->fetchAll();

			$statement->closeCursor();
											
			// Setup query that will change the purchased flag to "N", if it's currently set to "Y"
			$sqlSetToN = "UPDATE shoplist SET purchased = 'N' WHERE purchased = 'Y'";
											
			// Setup query that will change the purchased flag to "Y", if it's currently set to "N", "", or NULL
			$sqlSetToY = "UPDATE shoplist SET purchased = 'Y' WHERE purchased = 'N' OR purchased = '' OR purchased IS NULL";

			$statementSetToN = $conn->prepare($sqlSetToN);
			$statementSetToY = $conn->prepare($sqlSetToY);
											
			/*** loop through the results/collection of checked items ***/
			foreach($result as $row)
				{
					if ($row["purchased"] != "Y")
						{
							// *** fetch one row at a time pertaining to the 2nd query *** //
							$resultSetToY = $statementSetToY->fetch();
															
							foreach($resultSetToY as $row)
								{															
									$statementSetToY->execute();																
								}
						}
					else
						{
							// *** fetch one row at a time pertaining to the 2nd query *** //
							$resultSetToN = $statementSetToN->fetch();
															
							foreach($resultSetToN as $row)
								{															
									$statementSetToN->execute();																
								}
						}
				}
				break;
		}

Originally, I would get both, and unfortunately would inconsistently use both.  Then, I wanted more consistently, so configured php.ini to only return objects as I felt accessing them was more concise.  And then later, I found myself needing arrays more often, and initially would just typecast them to arrays but eventually my standard was to set the PDO's fetch style to an array.  And now I find myself almost always explicitly requesting arrays and occasionally requesting columns or named values.

Do you configure ATTR_DEFAULT_FETCH_MODE, and if so to what?

PS.  Anyone use FETCH_CLASS, FETCH_INTO or FETCH_NUM?  If so, what would be a good use case?

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
        )

)