PHP - Convert The Values Of An Array

	<?php
    $srs = array();
    for ($section = 1; $section < 5; $section++) {
        for ($row = $section; $row < 10; $row++) {
            for ($seat = $row; $seat < 20; $seat++) {
                $srs[] = array(
                    'section_name' => $section,
                    'row_name' => $row,
                    'seat_name' => $seat);
            }
        }
    }
	
    output(convert_array($srs));
	// Converts the array
    function convert_array($input)
    {
	        return $input;
    }
	    function output($obj)
    {
        echo "<pre>";
        print_r($obj);
        echo "</pre>";
        die;
    }
?>
	

I'm trying to convert those array number to string, add implode() to make it happen, but seem PHP didn't recognize variable in $input. Like this implode("Section: ", $input) or (Section: ", $srs). Can you help me?

Thanks,

Gary

I have this php file which i use to get downloaded and uploaded data usage from my splynx radius server over API which outputs it as bytes making a very long string which i want to shorten into Mbps and from the arrays that i get from splynx server i would like help to convert the array "in_bytes" and "out_bytes" to MB. This is my whole code below. currently the output is in bytes and i need it to be in MB

<?php

$api_url = 'https://xxx/'; // Splynx URL

$admin_login = "xxx"; // administrator login
$admin_password = "xxx"; // administrator password

$api = new SplynxAPI($api_url);
$api->setVersion(SplynxApi::API_VERSION_2);

$isAuthorized = $api->login([
    'auth_type' => SplynxApi::AUTH_TYPE_ADMIN,
    'login' => $admin_login,
    'password' => $admin_password,
]);

if (!$isAuthorized) {
    exit("Authorization failed!\n");
}

$customerApiUrl_online = "admin/customers/customers-online";

$customers_params = [
    'main_attributes' => [
        'status' => ['IN', ['active', 'blocked']]
    ]];

$result_online = $api->api_call_get($customerApiUrl_online);
$customers_online = $api->response;
?>

<table class="table table-transparent">
    <thead>
        <tr>
            <th>DOWNOAD</th>
            <th>UPLOAD</th>
        </tr>
    </thead>
    <tbody>
        <?php foreach($customers_online as $item) :?>
            <tr>
                <td><?php echo $item['in_bytes']; ?></td>
                <td><?php echo $item['out_bytes']; ?></td>
            </tr>
        <?php endforeach;?>
    </tbody>
</table>

$x = ['a' => 2, 'b' => 1, 'c' => 4, 'd' => 1];

$x1 = array_keys($x);
$x2 = array_values($x);

$z = [];
for ($i=0; $i<count($x); $i++) {
  array_push($z, [$x1[$i],$x2[$i]] );
} 

print_r($z); //[['a', 2], ['b', 1], ['c', 4], ['d', 1]];

$sql = "
SELECT 
	student, sum( test_score ) as score
FROM 
	test
INNER JOIN 
	level 
ON 
	test.level_id = level.level_id
GROUP BY 
	student"
$result = $mysqli->query($sql, MYSQLI_STORE_RESULT);
if($result)
{
      while ($row = $result->fetch_array(MYSQLI_ASSOC))
       {
	    var_dump($row);
       }
}

array (size=2)
  'John' => string 'English' (length=2)
  'Score' => string '20' (length=3)

array (size=2)
  'Mary' => string 'Math' (length=3)
  'Score' => string '35' (length=3)

array (size=2)
  'Samuel' => string 'Physics' (length=3)
  'Score' => string '5' (length=3)