/
registration-form.php
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registration-form.php
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<?php
// Include validate.php which contains functions for verifying the POST data.
include 'validate.php';
{
// Determine whether or not the form has been submitted.
$is_submitted = isset($_POST['submit']);
// Initialize error check booleans
$b_is_first_name_valid = true;
$b_is_last_name_valid = true;
$b_is_address_valid = true;
$b_is_city_valid = true;
$b_is_state_valid = true;
$b_is_zip_valid = true;
$b_is_country_valid = true;
// Initialize variables used to store POST data
$first_name = "";
$last_name = "";
$address1 = "";
$address2 = "";
$city = "";
$state = "";
$zip = "";
$country = "";
// If the form has not been submitted...
if($is_submitted == false)
{
// Create key/pair array containing the POST data and validity
// and pass it to display_registration_form().
$post_data = array
(
array($first_name, $b_is_first_name_valid),
array($last_name, $b_is_last_name_valid),
array($address1, $b_is_address_valid),
array($address2, $b_is_address_valid),
array($city, $b_is_city_valid),
array($state, $b_is_state_valid),
array($zip, $b_is_zip_valid),
array($country, $b_is_country_valid)
);
// Display the registration form.
display_registration_form($post_data);
}
// If the form has been submitted...
else
{
// Assign POST data
$first_name = $_POST['first_name'];
$last_name = $_POST['last_name'];
$address1 = $_POST['address1'];
$address2 = $_POST['address2'];
$city = $_POST['city'];
$state = $_POST['state'];
$zip = $_POST['zip'];
$country = $_POST['country'];
// Validate POST data
$b_is_first_name_valid = validate_string($first_name);
$b_is_last_name_valid = validate_string($last_name);
$b_is_address_valid = validate_address($address1, $address2);
$b_is_city_valid = validate_city($city);
$b_is_state_valid = validate_string($state);
$b_is_zip_valid = validate_zip($zip);
$b_is_country_valid = validate_string($country);
// Check POST data
if($b_is_first_name_valid == true &&
$b_is_last_name_valid == true &&
$b_is_address_valid == true &&
$b_is_city_valid == true &&
$b_is_state_valid == true &&
$b_is_zip_valid == true &&
$b_is_country_valid == true)
{
// The inputted data is valid, submit it to server.
submit_data($first_name,
$last_name,
$address1,
$address2,
$city,
$state,
$zip,
$country);
}
else
{
// The inputted data is not valid, show the form again with
// indicated errors.
// Create key/pair array containing the POST data and validity
// and pass it to display_registration_form().
$post_data = array
(
array($first_name, $b_is_first_name_valid),
array($last_name, $b_is_last_name_valid),
array($address1, $b_is_address_valid),
array($address2, $b_is_address_valid),
array($city, $b_is_city_valid),
array($state, $b_is_state_valid),
array($zip, $b_is_zip_valid),
array($country, $b_is_country_valid)
);
display_registration_form($post_data);
}
}
}
// submit_data() sends the user inputted data to the server for
// server-side validation and entry into the database.
//
// Arguments: POST data strings
// Returns: nothing
function submit_data($first_name,
$last_name,
$address1,
$address2,
$city,
$state,
$zip,
$country)
{
// Set confirmation page URL.
$confirmation_page="http://helloworld.cookingfor20somethings.com/confirmation.php";
// Create array of fields to submit.
$fields = array('first_name' => $first_name,
'last_name' => $last_name,
'address1' => $address1,
'address2' => $address2,
'city' => $city,
'state' => $state,
'zip' => $zip,
'country' => $country);
// Generate URL-encoded query (POST) string.
$post_data = http_build_query($fields);
/*
* Use cURL library for interacting with the confirmation page.
*/
// Initialize our cURL session.
$curl_handle = curl_init();
// Set the URL to use.
curl_setopt($curl_handle, CURLOPT_URL, $confirmation_page);
// Set the CURLOPT_POST option to 1 to indicate that we will perform a POST operation.
curl_setopt($curl_handle, CURLOPT_POST, 1);
// Set the POST data.
curl_setopt($curl_handle, CURLOPT_POSTFIELDS, $post_data);
// Execute POST.
$result = curl_exec($curl_handle);
// Close our cURL session.
curl_close($curl_handle);
}
// display_registration_form() displays the registration form.
//
// Arguments: multi-dimensional array containing POST data and boolean
// indicating whether or not the POST data is valid.
// Returns: nothing
function display_registration_form($post_data)
{
// Initialize validation failure flag
$b_validation_failure = false;
// Redirect submit action back to this page in case we need to show errors.
$action = htmlspecialchars($_SERVER[PHP_SELF]);
// Print html and body tags.
echo "<html>\n";
echo "<body>\n";
// Print form header.
echo "<h2>HelloWorld Registration Form</h2>\n";
echo "<h4>All fields are required.</h4>\n";
// Print form.
echo "<form action=$action method=\"POST\" enctype=\"multipart/form-data\">\n";
echo "<input type=\"hidden\" name=\"action\" value=\"submit\">\n";
// Assign post data value so we can print it below.
$value = $post_data[0][0];
echo "<input type=\"text\" name=\"first_name\" placeholder=\"First Name\" value=\"$value\">\n";
// If POST data failed verification append "*" to the input field.
if($post_data[0][1] == false)
{
echo "<span style=\"color:red\">*</span>\n";
// Set validation failure flag
$b_validation_failure = true;
}
echo "<br><br>\n";
// Assign post data value so we can print it below.
$value = $post_data[1][0];
echo "<input type=\"text\" name=\"last_name\" placeholder=\"Last Name\" value=\"$value\">\n";
// If POST data failed verification append "*" to the input field.
if($post_data[1][1] == false)
{
echo "<span style=\"color:red\">*</span>\n";
// Set validation failure flag
$b_validation_failure = true;
}
echo "<br><br>\n";
// Assign post data value so we can print it below.
$value = $post_data[2][0];
echo "<input type=\"text\" name=\"address1\" placeholder=\"Address 1\" value=\"$value\">\n";
// If POST data failed verification append "*" to the input field.
if($post_data[2][1] == false)
{
echo "<span style=\"color:red\">*</span>\n";
// Set validation failure flag
$b_validation_failure = true;
}
echo "<br>\n";
// Assign post data value so we can print it below.
$value = $post_data[3][0];
echo "<input type=\"text\" name=\"address2\" placeholder=\"Address 2\" value=\"$value\">\n";
echo "<br><br>\n";
// Assign post data value so we can print it below.
$value = $post_data[4][0];
echo "<input type=\"text\" name=\"city\" placeholder=\"City\" value=\"$value\">\n";
// If POST data failed verification append "*" to the input field.
if($post_data[4][1] == false)
{
echo "<span style=\"color:red\">*</span>\n";
// Set validation failure flag
$b_validation_failure = true;
}
// Switch to printing HTML with embedded PHP since it will be easier to read.
?>
<br><br>
<select name="state">
<option <?php if(empty($post_data[5][0]) == true) { echo "selected"; } ?> disabled>Choose State</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "AL") == 0) { echo "selected"; } ?> value="AL">Alabama</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "AK") == 0) { echo "selected"; } ?> value="AK">Alaska</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "AZ") == 0) { echo "selected"; } ?> value="AZ">Arizona</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "AR") == 0) { echo "selected"; } ?> value="AR">Arkansas</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "CA") == 0) { echo "selected"; } ?> value="CA">California</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "CO") == 0) { echo "selected"; } ?> value="CO">Colorado</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "CT") == 0) { echo "selected"; } ?> value="CT">Connecticut</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "DE") == 0) { echo "selected"; } ?> value="DE">Delaware</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "DC") == 0) { echo "selected"; } ?> value="DC">District Of Columbia</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "FL") == 0) { echo "selected"; } ?> value="FL">Florida</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "GA") == 0) { echo "selected"; } ?> value="GA">Georgia</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "HI") == 0) { echo "selected"; } ?> value="HI">Hawaii</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "ID") == 0) { echo "selected"; } ?> value="ID">Idaho</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "IL") == 0) { echo "selected"; } ?> value="IL">Illinois</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "IN") == 0) { echo "selected"; } ?> value="IN">Indiana</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "IA") == 0) { echo "selected"; } ?> value="IA">Iowa</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "KS") == 0) { echo "selected"; } ?> value="KS">Kansas</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "KY") == 0) { echo "selected"; } ?> value="KY">Kentucky</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "LA") == 0) { echo "selected"; } ?> value="LA">Louisiana</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "ME") == 0) { echo "selected"; } ?> value="ME">Maine</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "MD") == 0) { echo "selected"; } ?> value="MD">Maryland</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "MA") == 0) { echo "selected"; } ?> value="MA">Massachusetts</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "MI") == 0) { echo "selected"; } ?> value="MI">Michigan</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "MN") == 0) { echo "selected"; } ?> value="MN">Minnesota</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "MS") == 0) { echo "selected"; } ?> value="MS">Mississippi</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "MO") == 0) { echo "selected"; } ?> value="MO">Missouri</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "MT") == 0) { echo "selected"; } ?> value="MT">Montana</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "NE") == 0) { echo "selected"; } ?> value="NE">Nebraska</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "NV") == 0) { echo "selected"; } ?> value="NV">Nevada</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "NH") == 0) { echo "selected"; } ?> value="NH">New Hampshire</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "NJ") == 0) { echo "selected"; } ?> value="NJ">New Jersey</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "NM") == 0) { echo "selected"; } ?> value="NM">New Mexico</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "NY") == 0) { echo "selected"; } ?> value="NY">New York</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "NC") == 0) { echo "selected"; } ?> value="NC">North Carolina</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "ND") == 0) { echo "selected"; } ?> value="ND">North Dakota</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "OH") == 0) { echo "selected"; } ?> value="OH">Ohio</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "OK") == 0) { echo "selected"; } ?> value="OK">Oklahoma</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "OR") == 0) { echo "selected"; } ?> value="OR">Oregon</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "PA") == 0) { echo "selected"; } ?> value="PA">Pennsylvania</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "RI") == 0) { echo "selected"; } ?> value="RI">Rhode Island</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "SC") == 0) { echo "selected"; } ?> value="SC">South Carolina</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "SD") == 0) { echo "selected"; } ?> value="SD">South Dakota</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "TN") == 0) { echo "selected"; } ?> value="TN">Tennessee</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "TX") == 0) { echo "selected"; } ?> value="TX">Texas</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "UT") == 0) { echo "selected"; } ?> value="UT">Utah</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "VT") == 0) { echo "selected"; } ?> value="VT">Vermont</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "VA") == 0) { echo "selected"; } ?> value="VA">Virginia</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "WA") == 0) { echo "selected"; } ?> value="WA">Washington</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "WV") == 0) { echo "selected"; } ?> value="WV">West Virginia</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "WI") == 0) { echo "selected"; } ?> value="WI">Wisconsin</option>
<option <?php if($post_data[5][1] == true && strcmp($post_data[5][0], "WY") == 0) { echo "selected"; } ?> value="WY">Wyoming</option>
</select>
<?php
// If POST data failed verification append "*" to the input field.
if($post_data[5][1] == false)
{
echo "<span style=\"color:red\">*</span>\n";
// Set validation failure flag
$b_validation_failure = true;
}
echo "<br><br>\n";
// Assign post data value so we can print it below.
$value = $post_data[6][0];
echo "<input type=\"text\" name=\"zip\" placeholder=\"Zip (5 or 9 digit)\" value=\"$value\">\n";
// If POST data failed verification append "*" to the input field.
if($post_data[6][1] == false)
{
echo "<span style=\"color:red\">*</span>\n";
// Set validation failure flag
$b_validation_failure = true;
}
// Switch to printing HTML with embedded PHP since it will be easier to read.
?>
<br><br>
<select name="country">
<option <?php if(empty($post_data[7][0]) == true) { echo "selected"; } ?> disabled>Choose Country</option>
<option <?php if($post_data[7][1] == true && strcmp($post_data[7][0], "United States") == 0) { echo "selected"; } ?> value="United States">United States</option>
</select>
<?php
// If POST data failed verification append "*" to the input field.
if($post_data[7][1] == false)
{
echo "<span style=\"color:red\">*</span>\n";
// Set validation failure flag
$b_validation_failure = true;
}
echo "<br><br><br>\n";
echo "<input type=\"submit\" name=\"submit\" value=\"Submit\">\n";
// If one or more of the POST data entries is invalid display
// a message to the user indicating that errors occurred and to
// try again.
if($b_validation_failure == true)
{
echo "<br><br>\n";
echo "<span style=\"color:red\">Validation error(s) occurred. Please confirm the fields marked with an asterisk (*) and submit again.</span>\n";
}
// Close form.
echo "</form>\n";
// Close body and html tags.
echo "</body>\n";
echo "</html>\n";
}