Key/value pairs in PHP are common so when you need to iterate through an array and return only the value, this is how you do it.

key-value-array.php

<?php 
$array = array(
"Events",
"Webinars",
"Cloud",
"Collaboration",
"Innovation",
"Tips"
)

foreach( $array as $key => $value ){
    echo $key."\t=>\t".$value."\n";
}

// This will return the following:
[0] => Events
[1] => Webinars
[2] => Cloud
[3] => Collaboration
[4] => Innovation
[5] => Tips

// But the following
foreach( $array as $key => $value ){
    echo $value."\n";
}
// will return just the values
Events
Webinars
Cloud
Collaboration
Innovation
Tips

?>