array_multisort_by_key

array_multisort_by_key.php

/*
 * License: MIT
 */
 
/**
 * Sort an array of associative arrays by a key. Like array_multisort but you just provide the key instead of the whole column.
 * @param array[] $data The array of associative arrays to sort
 * @param mixed ...$args Any number of variables. [key, SORT_ASC|SORT_DESC, Sort Flags]
 *                       https://secure.php.net/manual/en/function.array-multisort.php
 * @return array[] The sorted $data
 */
function array_multisort_by_key($data, ...$args) {
	if (!is_array($data)) {
		return [];
	}
	$params = [];
	foreach ($args as $n => $arg) {
		if (is_string($arg)) {
			$column = [];
			foreach ($data as $row) {
				$column[] = $row[$arg];
			}
			$arg = $column;
		}
		$params[] = $arg;
	}
	$params[] = &$data;
	array_multisort(...$params);
	return $data;
}