Php code to send message to multiple recipient with different message body - php

Question

I'm trying to send messages to multiple recipients with different message body but I don't know if my script has any error. The problem is when I execute this below code, only one user email will receive message. If I try it again another one will get a message. I want all the emails in the array to receive the message with individual message body. And also I noticed that my script takes long to complete execution. Is there a better way to get this working as expected?
PHP
<?php
$conn_handler->prepare('
SELECT * FROM food_orders fo
INNER JOIN our_chefs oc
ON oc.chef_private_key = fo.order_chefpkey
WHERE fo.order_id = :currentorder AND fo.order_userid = :order_userid
ORDER BY fo.order_chefpkey
');
$conn_handler->bind(':currentorder', $lastOrderId);
$conn_handler->bind(':order_userid', $buyerid);
$conn_handler->execute();
$getFoodOrders = $conn_handler->getAll();
if( !isset($_SESSION['completed_'.$lastOrderId]) ) {
$creatProducts = array();
$email_list = array();
/*Here i loop on current orders*/
foreach($getFoodOrders as $row) {
//Create an array of chef emails
$email_list[$row->chef_private_key] = $row->chef_email;
//Create an array of items based on chef private key
$creatProducts[$row->order_chefpkey][] = array(
'o_name' => $row->order_foodname,
'o_pid' => $row->oder_foodid,
'o_price' => $row->order_price,
'o_currency' => $row->currency,
'o_qty' => $row->order_qty,
'o_size' => $row->order_size,
'o_img' => $row->order_image,
);
}
//Here i loop through the above chef emails
foreach($email_list as $key => $val) {
$productBuilder = null;
//Here i create html for products based on chef keys
foreach($creatProducts[$key] as $erow) {
$productBuilder .= '<div><b>Product Name:</b> '.$erow['o_name'].'<br/></div>';
}
//Here i send email to each chef with their individual products created above
$sourcejail->sendMail(
$val, //Send TO
null, //Send Bcc
null, //Send CC
null, //reply To
1, //Something
'Your have received new order ('.$lastOrderId.')', //Subject
$productBuilder //Message body
);
}
$_SESSION['completed_'.$lastOrderId] = true;
}