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				<?php

				/**
				* List of CIDR notation IP blocks, like "172.30.0.0/16".
				*
				* This class is primarily useful for managing IP whitelists or blacklists.
				* For example, you can check if an address is on a subnet like this:
				*
				* $whitelist = PhutilCIDRList::newList(array('172.30.0.0/16'));
				* $ok = $whitelist->containsAddrsss('172.30.0.1');
				*/
				final class PhutilCIDRList extends Phobject {

				private $blocks;

				private function __construct() {
				// <private>
				}

				public static function newList(array $blocks) {
				foreach ($blocks as $key => $block) {
				$blocks[$key] = PhutilCIDRBlock::newBlock($block);
				}

				$obj = new PhutilCIDRList();
				$obj->blocks = $blocks;
				return $obj;
				}

				public function containsAddress($address) {
				foreach ($this->blocks as $block) {
				if ($block->containsAddress($address)) {
				return true;
				}
				}

				return false;
				}

				}