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PHP: Pushing Array to Array

Using PHP, how can I push items to an array at the first level without going two levels deep?

$emails = array(); 

$contact_email = '1@example.com   ';
$contact_email_additional = '2@example.com, 3@example.com   ,    4@example.com';

array_push($emails, trim($contact_email));
array_push($emails, array_map('trim', explode(',', $contact_email_additional)));

echo '<pre>';
print_r($emails);
echo '</pre>';

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The problem with the code above is that it puts an array inside an array, instead of adding the items to the array.

Array
(
    [0] => 1@example.com
    [1] => Array
        (
            [0] => 2@example.com
            [1] => 3@example.com
            [2] => 4@example.com
        )

)

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ASKER CERTIFIED SOLUTION

Julian Hansen

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Julian Hansen

Sample code below. Working sample here

<?php
$emails = array(); 

$contact_email = '1@example.com   ';
$contact_email_additional = '2@example.com, 3@example.com   ,    4@example.com';

array_push($emails, trim($contact_email));
$emails = array_merge($emails, array_map('trim', explode(',', $contact_email_additional)));

echo '<pre>';
print_r($emails);
echo '</pre>';

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Ray Paseur

All of the PHP array functions are documented in the online man pages. It's worth taking a moment to read the descriptions (you can read them all in less than five minutes). You'll be pleasantly surprised at how many array functions exist and how richly supportive they are!
http://php.net/manual/en/ref.array.php