PHP二维数组排序|PHP二维数组去重

二维数组排序

function array_sort($arr, $keys, $order = 0) {
	if (!is_array($arr)) {
		return false;
	}
	$keysvalue = array();
	foreach ($arr as $key => $val) {
		$keysvalue[$key] = $val[$keys];
	}
	if ($order == 0) {
		asort($keysvalue);
	} else {
		arsort($keysvalue);
	}
	reset($keysvalue);
	foreach ($keysvalue as $key => $vals) {
		$keysort[$key] = $key;
	}
	$new_array = array();
	foreach ($keysort as $key => $val) {
		$new_array[$key] = $arr[$val];
	}
	return $new_array;
}

二维数组去重

function unique_2d_array_by_key($_2d_array, $unique_key) {
	$tmp_key[] = array();
	foreach ($_2d_array as $key => &$item) {
		if (is_array($item) && isset($item[$unique_key])) {
			if (in_array($item[$unique_key], $tmp_key)) {
				unset($_2d_array[$key]);
			} else {
				$tmp_key[] = $item[$unique_key];
			}
		}
	}
	return $_2d_array;
}