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 definition for 'pluck' that takes an array of items and a key as parameters
function pluck($items, $key)
{
    // Use 'array_map' to apply a callback function to each element of the array
    return array_map( function($item) use ($key) {
        // Check if the item is an object, and if so, access the property specified by the key
        // If the item is an array, access the array element specified by the key
        return is_object($item) ? $item->$key : $item[$key];
    }, $items);
}

// Call 'pluck' with an array of associative arrays and a key, then display the result using 'print_r'
print_r(pluck([
    ['product_id' => 'p100', 'name' => 'Computer'],
    ['product_id' => 'p200', 'name' => 'Laptop'],
], 'name'));

?>

Sample Output:

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

Flowchart:

PHP Code Editor:

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