Location: PHPKode > scripts > Easy Template > example2.php
<?php
include("template.class.php");

// If the form has not been posted...
if (! isset($_POST["Submit"])) {

    // Show the data entry form
    showForm();

} else { // We have posted data

    // Let's check the POST (or GET) data and validate
    $problem = validateForm();

    // If there were any problems then show them
    if (strlen($problem) > 0) {

        // Show the main registration form and pass in the validation problems
        showForm('<h3 style="color: red;">' . $problem . '</h3>');

    } else { // Data Validation Passed

        // SAVE THE RECORD OR PROCESS YOUR DATA HERE
        // Let's show a confirmation (which could be another template)
        echo "<h2>Your data was submitted successfully</h2>\n";

        //Now show the passed in values using the Template::getFormValue value
        //NOTE: we could also show these values using $_POST[] if needed
        echo "First Name: " . Template::getFormValue("FirstName") . "<br />\n";
        echo "Zip Code: " . Template::getFormValue("ZipCode") . "<br />\n";
        echo "Gender: " . Template::getFormValue("Gender") . "<br />\n";
        echo "Agree: " . (Template::getFormValue("Agree") == "on" ? "Yes" : "No");
    }
}
// --------------------------------------------------------------------------

//  Show the input form
function showForm($message="") {

    // Create the template object
    $template = new Template("example2.html");

    $template->replaceTag("Title", "My Template Example");
    $template->replaceTag("Message", $message);
    $template->replaceTag("FirstName", Template::getFormValue("FirstName"));
    $template->replaceTag("ZipCode", Template::getFormValue("ZipCode"));
    $template->replaceTag("Agree", Template::getHTMLChecked(Template::getFormValue("Agree")));

    // Populate the radio buttons group
    if (Template::getFormValue("Gender") == "F") {
        $template->replaceTag("GenderMale", Template::getHTMLChecked(false));
        $template->replaceTag("GenderFemale",  Template::getHTMLChecked(true));
    } else {
        $template->replaceTag("GenderMale", Template::getHTMLChecked(true));
        $template->replaceTag("GenderFemale", Template::getHTMLChecked(false));
    }

    $template->showPage();
}

//  Validate (server side for security) the values from the form
function validateForm() {

    // Validate the form values
    $problem = "";

    if (strlen(trim(Template::getFormValue("FirstName"))) == 0) {
        $problem .= "First name is required<br />";
    } elseif (strlen(trim(Template::getFormValue("FirstName"))) > 20) {
        $problem .= "First name is too long<br />";
    }

    if (! is_numeric(Template::getFormValue("ZipCode"))) {
        $problem .= "Zip code must be a valid number<br />";
    } elseif (strlen(trim(Template::getFormValue("ZipCode"))) <> 5) {
        $problem .= "Zip code must be 5 digits long<br />";
    }

    // Pass back any problems
    return $problem;

}
?>
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