Question

I’m trying to display 2 arrays with a foreach loop, but for some reason when the values in the arrays are set to 0, only the last item of the array is displaying

Say I have the following array values:

users array ( 0 => user1, 1 => user2)
occurrences array ( 0 => 0, 1 => 3)   //the key represents the user from the users array

The output of the foreach loop will display correctly

//output
user1 0
user2 3

However, if both values are 0 only user2 will be displayed

users array ( 0 => user1, 1 => user2)
occurrences array ( 0 => 0, 1 => 0);   //the key represents the user from the users array

//output (should also display user1 0)
user2 0

This is my foreach loop.

?>
<table>
<th>User</th><th># of Occurrences</th>
<?
foreach (array_combine($occurrences, $users) as $occur => $user){
    ?>
    <tr><td><? echo $user; ?></td><td><? echo $occur; ?></td></tr>
    <?
}
?></table>
<?

Answer 1

The code in the question is performing the following:

For each occurrence value key, provide a user.

I would imagine you are after the opposite behaviour:

For each user key, provide an occurrence value

Try swapping $occurrences and $users in the call, i.e.,

array_combine($users, $occurrences)

The reason you are only seeing user2 is because array_combine considers the entries 0 => 0 and 1 => 0 and will receive 0 0 as a key list. Therefore, it can only produce a single key in the resulting array hash (it is using the values from the occurrences array to build the key list).