Web Contractor:

I must say,you attacked it nicely.Just a little explanation for learners to follow.

Foreach loops can only be used with arrays.
it has the format

<?php
foreach($array as $value){
statement;
}
?>

Foreach loop will go through every single element of the array($array) and each of the elements(2,4,6,8,10,12) will become the value($value) which can then be referenced in the statement.

Simply put,we are pulling each of the elements in the array and assigning them to a variable name temporarily, and then executing a statement on them.

that bolded section should be
foreach($key=>$value){execute statement here}
since arrays consists of keys and values.