getByPath.php

<?php

/*
 * Get value from array by path
 * Example:
 * $a = ['customer' => ['address' => 'St. Jork', 'city' => 'Miami']]
 *
 * getByPath($a, 'customer.address')
 */
function getByPath($array, $path) {
    $temp = &$array;

    foreach (explode('.', $path) as $key) {
        $temp =& $temp[$key];
    }

    return $temp;
}

/*
 * Set value into array by path
 *
 * setByPath($a, 'customer.postcode', '11334')
 */
function setByPath(&$array, $path, $value) {
    $temp = &$array;

    foreach(explode('.', $path) as $key) {
        $temp =& $temp[$key];
    }

    $temp = $value;
}