Form: Authentication : empty: die
Step: 1 Client's code
<html>
<title>form:check_empty.htm </title>
<body text="#000080" bgcolor="#F7F0D7">
<table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="211">
<tr>
<td width="209">Please enter your name</td>
</tr>
<tr>
<td width="209">
<form method="POST" action="check_empty.php">
<input type="text" name="fname" size="20"><br>
<input type='hidden' name='insert_1' id='in_post_1' value='in_post_1' />
<input type="submit" value="Submit" name="B1"></p>
</form>
<p> </td>
</tr>
<tr>
<td width="209"> </td>
</tr>
</table>
</body>
</html>
Server's Code
<?php
$fname = $_POST['fname'];
// Evaluates to true because $var is empty
if (empty($fname)) {
echo '$fname is either 0, empty, or not set at all';
die("Missing Name");
}
else
{
echo "Thank you ";
}
// Evaluates as true because $var is set
//if (isset($fname)) {
// echo '$var is set even though it is empty';
//}
?>
Runtime Views:
Try to submit an empty box
Now try with any name
