Slicing a multi-dimensional PHP array across one of its elements

Question

Say for example you just queried a database and you recieved this 2D array.

$results = array(
    array(\'id\' => 1, \'name\' => \'red\'  , \'spin\' =&         


        

Answer 1

As of June 20th in PHP-5.5 there is a new function array_column

For example:

$records = array(
    array(
        'id' => 2135,
        'first_name' => 'John',
        'last_name' => 'Doe'
    ),
    array(
        'id' => 3245,
        'first_name' => 'Sally',
        'last_name' => 'Smith'
    ),
    array(
        'id' => 5342,
        'first_name' => 'Jane',
        'last_name' => 'Jones'
    ),
    array(
        'id' => 5623,
        'first_name' => 'Peter',
        'last_name' => 'Doe'
    )
);


$firstNames = array_column($records, 'first_name');
print_r($firstNames);

Will return

Array
(
    [0] => John
    [1] => Sally
    [2] => Jane
    [3] => Peter
)

There are even more examples in the above mentioned link.