PHP - Take Comma Seperated Values From One Array And Put Them In A New Array

I am trying to give role based access here. I want to display the pages which user has access in checkbox format. Here is my code

$sql = "SELECT p.page_id AS pid, 
                            p.page, 
                            p.href, 
                            ra.pages AS rpage 
             FROM pages p 
             INNER JOIN role_access ra 
             WHERE p.page_id IN (ra.page) 
             AND ra.role=1";

$query = mysqli_query($con, $sql) or die(mysqli_error($con));

$checked_arr = array();

while($row = mysqli_fetch_array($query)) { 
$checked_arr = explode(",",$row['rpage']);

foreach ($checked_arr as $page) {

    echo "<br/><input type='checkbox' name=\"pages[]\" value='$page' />$page<br>";
}

My tables are like this

ROLE

CREATE TABLE `role` (
  `rid` int(5) NOT NULL,
  `role_name` varchar(50) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

INSERT INTO `role` (`rid`, `role_name`) VALUES
(1, 'Admin'),
(2, 'Others');

ALTER TABLE `role`
  ADD PRIMARY KEY (`rid`);


ROLE-ACCESS

CREATE TABLE `role_access` (
  `id` int(10) NOT NULL,
  `page` varchar(160) NOT NULL,
  `role` int(7) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

INSERT INTO `role_access` (`id`, `page`, `role`) VALUES
(1, '1,2,3,4,5', 1),
(2, '2,4,5', 2);

ALTER TABLE `role_access`
  ADD PRIMARY KEY (`id`);



PAGES

CREATE TABLE `pages` (
  `page_id` int(11) NOT NULL,
  `code` varchar(10) NOT NULL,
  `page` varchar(100) NOT NULL,
  `href` varchar(255) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

INSERT INTO `pages` (`page_id`, `code`, `page`, `href`) VALUES
(1, 'Patient', 'Registration', '/patient_registration.php'),
(2, 'Patient', 'List', '/patient_list.php'),
(3, 'Patient', 'Edit', '/edit_patient.php'),
(4, 'Patient', 'Export', '/export_patient.php'),
(5, 'Patient', 'MRD', '/patient_MRD.php');

ALTER TABLE `pages`
  ADD PRIMARY KEY (`page_id`);

In above query i get result like this

But required result is

if i change checkbox display like

while($row = mysqli_fetch_array($query)) { 
$checked_arr = explode(",",$row['rpage']);
$pname = $row['page'];
foreach ($checked_arr as $page) {

    echo "<br/><input type='checkbox' name=\"pages[]\" value='$page' />$pname<br>";
}
}

i get result

How to get the names for that file.

So I'm trying to create an Array from a comma separated string containing array{s}. How can I take a string full of comma separated hex values such as : 

<?php
    $myStr = (
        "00ffff", "00cccc", "009999", 
        "007777", "004444", "001111", 
        "01ffff", "01cccc", "019999"
    );
?>

& turn it into 3 separated arrays like : 

<?php
    $myNewArrs = [
        Array1 ( 3 ), 
        Array2 ( 3 ), 
        Array3 ( 3 ), 
    ];
?>

which REALLY looks like : 

<?php
    $myNewArrs = [
        Array ( "00ffff", "00cccc", "009999" ), 
        Array ( "007777", "004444", "001111" ), 
        Array ( "01ffff", "01cccc", "019999" ), 
    ];
?>

?

Any assistance is most-definitely appreciated!

Thank you & have a great afternoon!