Speeding up PHP Calls - php

Question

so I have some PHP code which is displaying an email list (Name, Surname & Email) from a list I have hosted via API.
The problem I have is that in order to display the name of the subscriber, I have to separately pass the email through the API... and the only way to get the email is to use a separate function.
So, for a list of 100 people, I'm basically hitting calling their API 300 times... so it is taking forever to echo the information (and over 30ish people the server just times out).
Is there a way I can edit the blow code so that I'm not pulling their info EVERY time, and instead bring it all down at once?
Here's my code:
<?php
require('Mailin.php');
/////////Total Subscriber Count $subscribers
$mailin = new Mailin('https://api.sendinblue.com/v2.0','UNIQUEKEY');
$datacount = array( "id"=>13 );
$subscribercount = $mailin->get_list($datacount);
$subscribers = $subscribercount['data']['total_subscribers'] - 1;
/////////Get Emails of Subscribers
$dataemail = array( "listids" => array(2),
"page" => 1,
"page_limit" => 500
);
$getemails = $mailin->display_list_users($dataemail);
/////////Get Name of Subscribers
foreach (range(0, $subscribers) as $number) {
$subscriberemail = $getemails['data']['data'][$number]['email'];
echo $subscriberemail;
echo '<br/>';
$dataname = array( "email" => $subscriberemail );
$getname = $mailin->get_user($dataname);
$subscribername = $getname['data']['attributes']['NAME'];
$subscribersurname = $getname['data']['attributes']['SURNAME'];
echo $subscribername;
echo '<br/>';
echo $subscribersurname;
echo '<br/>';
}
?>
Here is the output you get calling the display_list_users:
{
"code":"success",
"message":"Retrieved details of all users for the given lists",
"data":{
"data":[
{
"blacklisted":0,
"email":"email1#domain.com",
"id":1,
"listid":[1],
"blacklisted_sms":1,
"last_modified" : "2015-05-22 15:30:00"
},
{
"blacklisted":1,
"email":"email2#domain.com",
"id":2,
"listid":[1,2],
"blacklisted_sms":0 ,
"last_modified" : "2015-05-25 19:10:30"
}
],
"page":1,
"page_limit":2,
"total_list_records":100
}
}
And the output you get calling the get_user:
{
"code":"success",
"message":"Data retrieved for email",
"data":{
"attributes":{
"EMAIL":"example#example.net",
"NAME" : "Name",
"SURNAME" : "surname"
},
"blacklisted":1,
"email":"example#example.net",
"entered":"2014-01-15",
"listid":[8],
"message_sent":[{
"camp_id" : 2,
"event_time" : "2013-12-18"
},
{ "camp_id" : 8,
"event_time" : "2014-01-03"
},
{ "camp_id" : 11,
"event_time" : "2014-01-07"
}],
"hard_bounces":[{
"camp_id" : 11,
"event_time" : "2014-01-07"
}],
"soft_bounces":[],
"spam":[{
"camp_id" : 2,
"event_time" : "2014-01-09"
}],
"unsubscription":{
"user_unsubscribe":[
{
"event_time":"2014-02-06",
"camp_id":2,
"ip":"1.2.3.4"
},
{
"event_time":"2014-03-06",
"camp_id":8,
"ip":"1.2.3.4"
}
],
"admin_unsubscribe":[
{
"event_time":"2014-04-06",
"ip":"5.6.7.8"
},
{
"event_time":"2014-04-16",
"ip":"5.6.7.8"
}
]
},
"opened":[{
"camp_id" : 8,
"event_time" : "2014-01-03",
"ip" : "1.2.3.4"
}],
"clicks":[],
"transactional_attributes":[
{
"ORDER_DATE":"2015-07-01",
"ORDER_PRICE":100000,
"ORDER_ID":"1"
},
{
"ORDER_DATE":"2015-07-05",
"ORDER_PRICE":500000,
"ORDER_ID":"2"
}
],
"blacklisted_sms":1
}
}