How to create a dynamic array for Mandrill API - php

Question

I want to send an email to multiple email addresses using one Mandrill API call, here is what we do to send to only one email:
<?php
$mandrill_message = array(
// ...blah blah, doesn't matter
// To send to only one email address:
'to' => array(
array(
'email' => $the_email,
)
),
// ...blah blah, doesn't matter
);
?>
This is OK but while we want to send the message to multiple email addresses, we must have this:
<?php
$mandrill_message = array(
// ...blah blah, doesn't matter
// To send to more than one email:
'to' => array(
array(
'email' => $email_1,
),
array(
'email' => $email_2,
),
array(
'email' => $email_3,
),
),
// ...blah blah, doesn't matter
);
?>
As you can see, we've repeated the array part, now assuming we have this array:
$subscribers_email = array(
'email_1#xxx.com',
'email_2#xxx.com',
'email_3#xxx.com'
);
How could we possibly make the mandrill code to use $subscribers_email? Of course we can write the email addresses in the mandrill code like:
<?php
$mandrill_message = array(
// ...blah blah, doesn't matter
// To send to only one amil address:
'to' => array(
array(
'email' => 'email_1#xxx.com',
),
array(
'email' => 'email_2#xxx.com',
),
array(
'email' => 'email_3#xxx.com',
),
),
// ...blah blah, doesn't matter
);
?>
But that's not what I want, imagine we need to make this dynamic and as a function, like:
function sendEmailToArray($subscribers_email){
$mandrill_message = array(
// ...blah blah, doesn't matter
// To send to only one amil address:
'to' => array(
$subscribers_email
),
// ...blah blah, doesn't matter
);
}
So I want to make that array in a dynamic way, is that possible?

Answer 1

You should convert your array as your requirement.
Use this code
function sendEmailToArray($subscribers_email){
//$subscribers_email = array(
// 'email_1#xxx.com',
// 'email_2#xxx.com',
// 'email_3#xxx.com'
//);
$final_subscribers_email = array();
foreach ($subscribers_email as $key => $value) {
array_push($final_subscribers_email, array("email" => $value));
}
$mandrill_message = array(
// ...blah blah, doesn't matter
// To send to only one email address:
'to' => $final_subscribers_email,
// ...blah blah, doesn't matter
);
}

Answer 2

You can use array_walk for this.
$subscribers_email = array(
'email_1#xxx.com',
'email_2#xxx.com',
'email_3#xxx.com'
);
sendEmailToArray($subscribers_email);
function sendEmailToArray($subscribers_email){
// Convert the array
array_walk($subscribers_email, function(&$input){
$input = array('email' => $input);
});
// Send the emails
$mandrill_message = array(
'to' => array($subscribers_email),
);
}