Quick Reference for PHP: Difference between revisions
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<nowiki>$qString = $_SERVER['QUERY_STRING'];</nowiki> | <nowiki>$qString = $_SERVER['QUERY_STRING'];</nowiki> | ||
<nowiki>$qString = preg_replace('#[^a-zA-Z0-9_-]#', '', $qString);</nowiki> | <nowiki>$qString = preg_replace('#[^a-zA-Z0-9_-]#', '', $qString);</nowiki> | ||
print "QUERYSTRING= $qString<BR>"; | <nowiki>print "QUERYSTRING= $qString<BR>";</nowiki> | ||
if ($qString == "") $qString = "home"; | <nowiki>if ($qString == "") $qString = "home";</nowiki> | ||
if ($qString == "home") { | if ($qString == "home") { | ||
?><i>Viewing the HOME PAGE</i></a> <? | <nowiki>?><i>Viewing the HOME PAGE</i></a> <?</nowiki> | ||
} elseif ($qString == "other") { | } elseif ($qString == "other") { | ||
?><i>Viewing some other page</i></a> <? | <nowiki>?><i>Viewing some other page</i></a> <?</nowiki> | ||
} | } | ||
The line with preg_replace protects against known query string exploits. The null assignment could be done better, however, the example is for syntax purposes. | |||
== Switch is the Equivalent of Case == | |||
<nowiki><?</nowiki> | |||
<nowiki>switch ($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": | |||
| | ||
Latest revision as of 13:48, 18 April 2014
Redirect with PHP
See also: PHP Function Reference
<?
header('Location: http://members.robotz.com/');
?>
Read Query String
<?
$qString = $_SERVER['QUERY_STRING'];
$qString = preg_replace('#[^a-zA-Z0-9_-]#', '', $qString);
print "QUERYSTRING= $qString<BR>";
if ($qString == "") $qString = "home";
if ($qString == "home") {
?><i>Viewing the HOME PAGE</i></a> <?
} elseif ($qString == "other") {
?><i>Viewing some other page</i></a> <?
}
The line with preg_replace protects against known query string exploits. The null assignment could be done better, however, the example is for syntax purposes.
Switch is the Equivalent of Case
<?
switch ($i) {
case 0:
echo "i equals 0";
break;
case 1:
echo "i equals 1";
break;
case 2:
echo "i equals 2";
break;
default:
echo "i is not equal to 0, 1 or 2";
}
?>
Or with string variables
case "apple":