Difference between revisions of "Quick Reference for PHP"
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See also: [[PHP Function Reference]] | See also: [[PHP Function Reference]] | ||
| − | + | <? | |
| − | + | 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": | ||
| + | |||
| + | | ||
[[Category:Computer Technology]] | [[Category:Computer Technology]] | ||
[[Category:Programming]] | [[Category:Programming]] | ||
[[Category:PHP]] | [[Category:PHP]] | ||
Latest revision as of 14:48, 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":
