Pass Numeric Values in a Querystring in PHP
Description
The following code shows how to pass Numeric Values in a Querystring.
Example
//index.php//from w ww.j av a 2 s . c om
<html>
<body>
<div>
<p>Click a link to change the text color of the verbiage below:</p>
<a href="index.php?color=1">Green</a><br />
<a href="index.php?color=2">Red</a><br />
<a href="index.php?color=3">Blue</a><br />
<a href="index.php">Reset</a>
<?php
if (isset ($_GET['color'])){
$color = intval ($_GET['color']);
} else {
$color = "";
}
if ($color == 1){
$fontcolor = "00FF00";
} elseif ($color == 2){
$fontcolor = "FF0000";
} elseif ($color == 3){
$fontcolor = "0000FF";
} else {
$fontcolor = "000000";
}
?><p style="color: #<?php echo $fontcolor; ?>; font-weight: bold;">Hello World!</p><?php
?>
</div>
</body>
</html>
The code above generates the following result.
