نمونه :
<?php
if(isset($_GET['submit'])) {
$username = $_GET['username'];
$sex = $_GET['sex'];
$age = $_GET['age'];
if($sex == 'male') { $bgColor = '#000'; } else if($sex == 'female') { $bgColor = '#00F'; }
echo '<div style="display:block;margin:20px auto;padding:20px;width:400px;text-align:left;color:#FFF;background:'.$bgColor.'">';
echo 'Username : '.$username.'<br>';
echo 'sex : '.$sex.'<br>';
echo 'age : '.$age.'<br>';
echo '</div>';
} else {
?>
<div style="display:block;margin:20px auto;width:400px;text-align:left;">
<form method="get" action="">
Username : <input type="text" name="username"><br><br>
sex :
<select name="sex">
<option value="male">Male</option>
<option value="female">Female</option>
</select>
<br><br>
age : <input type="number" name="age"><br><br>
<input type="submit" name="submit" value="send">
</form>
</div>
<?php } ?>
