Form not showing? - php

Question

I require some assistance that I hope that one of you can answer for me. I have an assignment for my PHP course. For this assignment we were tasked with making a form with 4 input fields (including a reset and submit button). The fields are supposed to be labeled as name, address, email, and phone number. Now when I write the code into Dreamweaver I get no syntax errors but whenever I execute the script using Wamp, the form doesn't show. Any help would be appreciated as this is something that has to be done for our midterm.
<?php
function validateInput($data, $fieldName) {
global $errorCount;
if (empty($data)) {
echo "\"$fieldName\" is a required field. <br />\n";
++$errorCount;
$retval = "";
} else { //Only clean up the input if it isn't // empty
$retval = trim($data);
$retval = stripslashes($retval);
}
return($retval);
}
function validateEmail ($data, $fieldName) {
global $errorCount;
if (empty($data)) {
echo "\"$fieldName\" is a required field.<br />\n";
++$errorCount;
$retval = "";
} else { // Only Clean up the input if it isn't // empty
$retval = trim($data);
$retval = stripslashes($retval);
$pattern = "/^[\w-]+(\.[\w-]+)*#" .
"[\w-]+(\.[\w-]+)*" .
"(\. [[a-z]]{2,})$/i";
if (preg_match($pattern, $retval)==0) {
echo "\"$fieldName\" is not a valid e-mail address.<br />\n";
++$errorCount;
}
}
return($retval);
}
function displayForm($Sender, $Email, $Address, $Phone) {
?>
<h2 style= "text-align:center">Contact Us</h2>
<form name="contact" action="contact_us.php" method="post">
<p>Your Name: <input type="text" name="Sender" value="<?php
echo $Sender; ?>" /> </p>
<p>Your E-mail: <input type="text" name="Email" value="<?php echo $Email; ?>" /></p>
<p>Address: <input type="text" name="Address" value="<?php echo $Address; ?>" /></p>
<p>Phone #: <input type="number" name="Phone" value="<?php echo $Phone; ?>"<br />
</p>
<p><input type="reset" value="Clear Form" /> <input type="submit" name="Submit" value="Send Form" /></p>
</form>
<?php
}
$ShowForm = TRUE;
$errorCount = 0;
$Sender = "";
$Email = "";
$Address = "";
$Phone = "";
if (isset($_POST['Submit'])) {
$Sender =
validateInput($_POST['Sender'], "Your Name");
$Email =
validateEmail($_POST['Email'], "Your E-mail");
$Subject =
validateInput($_POST['Address'], "Your Address");
$Message =
validateInput($_POST['Phone'],"Your number");
if ($errorCount==0)
$ShowForm = FALSE;
else
$ShowForm = TRUE;
}
if ($ShowForm == TRUE) {
if ($errorCount>0) // if there were errors echo "<p>Please re-enter the form information below.</p>\n";
displayForm($Sender, $Email, $Address, $Phone);
}
else {
$SenderAddress= "$Sender <$Email>";
$Headers= "From: $SenderAddress\nCC:
$SenderAddress\n";
// Substitute your own email address for // recipient#example.com
$result = mail ("recipient#example.com",
$Subject, $Message, $Headers);
if ($result)
echo "<p>Your message has been sent. Thank you, " . $Sender . ".</p>\n";
else
echo "<p>There was an error sending your message, " .
$Sender . ".</p>\n";
} ?>

Answer 1

You see nothing becouse you din`t call the function displayForm() you just create it.
so put this displayForm(); before the end of your php tag and see what will happen.

Answer 2

if ($ShowForm == TRUE) {
if ($errorCount>0) // if there were errors echo "<p>Please re-enter the form information below.</p>\n";
displayForm($Sender, $Email, $Address, $Phone);
}
It looks like your form is set to only show when $ShowForm == TRUE && $errorCount > 0. Since your defaults are $ShowForm = TRUE and $errorCount = 0 your form will never show.
This is why using curly braces on your ifs, while making the file larger, help greatly when troubleshooting.