Question

I have an array of arrays like so:

array( array(), array(), array(), array() );

the arrays inside the main array contain 4 keys and their values. The keys are the same among all arrays like this:

array( 'id' => 'post_1',
       'desc' => 'Description 1',
       'type' => 'type1',
       'title' => 'Title'
     );

array( 'id' => 'post_2',
       'desc' => 'Description 2',
       'type' => 'type2',
       'title' => 'Title'
     );

So I want to create another array and extract the id and type values and put them in a new array like this:

array( 'post_1' => 'type1', 'post_2' => 'type2'); // and so on

The keys in this array will be the value of id key old arrays and their value will be the value of the type key.

So is it possible to achieve this? I tried searching php.net Array Functions but I don’t know which function to use?

Answer 1

Just use a good ol’ loop:

$newArray = array();
foreach ($oldArray as $entry) {
    $newArray[$entry['id']] = $entry['type'];
}