PHP - Index/Follow Script

index-follow-script.php

<?php
		//[TM][6/19/2012] Index-Follow Script
                // Another variation of the URL_task script. This one is based on SEO Requirements of redundant pages created by WordPress loops. 
		//v1.0.0

		$domain = $_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
		$homepage = "www.[domain].com/";
		$reg_meta = "<meta name='robots' content='index, follow' />";

				if ($domain <> $homepage)
				{

					$tag = strpos($domain, "tag/");
					$category = strpos($domain, "category/");
					$page = strpos($domain, "page/");
					$all = strpos($domain, "/");

					if ($tag == true) {$index_follow = "<meta name='robots' content='noindex, nofollow' />";}
					elseif ($category == true) {$index_follow = "<meta name='robots' content='noindex, nofollow' />";}
					elseif ($page == true) {$index_follow = "<meta name='robots' content='follow, noindex' />";}
					elseif ($page == true) {$index_follow = $reg_meta;}
					echo ($index_follow);

				}

				else
				{
    				echo ($reg_meta);
				}

?>