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PHP Exercises: Retrieve all of the values for a given key

PHP: Exercise-87 with Solution

Write a PHP program to retrieve all of the values for a given key.

Sample Solution: -

PHP Code:

<?php
function pluck($items, $key)
{
    return array_map( function($item) use ($key) {
        return is_object($item) ? $item->$key : $item[$key];
    }, $items);
}
print_r(pluck([
    ['product_id' => 'p100', 'name' => 'Computer'],
    ['product_id' => 'p200', 'name' => 'Laptop'],
], 'name'));

?>

Sample Output: 

Array
(
    [0] => Computer
    [1] => Laptop
)

Flowchart:

Flowchart: Retrieve all of the values for a given key.

PHP Code Editor:

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Previous: Write a PHP program to get the last element of a given list.
Next: Write a PHP program to mutate the original array to filter out the values specified.

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PHP: Tips of the Day

Returns all elements in an array except for the first one

Example:

<?php
function tips_tail($items)
{
  return count($items) > 1 ? array_slice($items, 1) : $items;
}

print_r(tips_tail([1, 5, 7]));
?>

Output:

Array
(
    [0] => 5
    [1] => 7
)