The following lines were added (+) and removed (-):
<? <? header('Location: http://members.robotz.com/'); header('Location: http://members.robotz.com/'); ?> ?>== Read Query String == <? <nowiki>$qString = $_SERVER['QUERY_STRING'];</nowiki> <nowiki>$qString = preg_replace('#[^a-zA-Z0-9_-]#', '', $qString);</nowiki> <nowiki>print "QUERYSTRING= $qString<BR>";</nowiki> <nowiki>if ($qString == "") $qString = "home";</nowiki> if ($qString == "home") { <nowiki>?><i>Viewing the HOME PAGE</i></a> <?</nowiki> } elseif ($qString == "other") { <nowiki>?><i>Viewing some other page</i></a> <?</nowiki> }The line with preg_replace protects against known query string exploits. The null assignment could be done better, however, the example is for syntax purposes.== Switch is the Equivalent of Case == <nowiki><?</nowiki> <nowiki>switch ($i) {</nowiki> <nowiki> case 0:</nowiki> <nowiki> echo "i equals 0";</nowiki> <nowiki> break;</nowiki> <nowiki> case 1:</nowiki> <nowiki> echo "i equals 1";</nowiki> <nowiki> break;</nowiki> <nowiki> case 2:</nowiki> <nowiki> echo "i equals 2";</nowiki> <nowiki> break;</nowiki> <nowiki> default:</nowiki> <nowiki> echo "i is not equal to 0, 1 or 2";</nowiki> <nowiki>}</nowiki> <nowiki>?></nowiki>Or with string variables case "apple":