I have now managed to get server-side validation to work using Ben's solution. Integrated into my code (which only creates database entries when the form is submitted) Ben's solution looks like this...
PHP Code:
<?php
require_once("/httpdocs/formtools/global/api/api.php");
if(isset($_POST['form_submitted']))
{
$fields = array();
$rules = array();
$errors = array();
$rules[] = "required,fm_name,Please enter your name.";
$rules[] = "required,fm_email,Please enter your email address.";
$rules[] = "valid_email,fm_email,Please enter a valid email address.";
$rules[] = "required,fm_subject,Please enter a subject.";
$rules[] = "required,fm_message,Please enter a message.";
$errors = validate_fields($_POST, $rules);
if(empty($errors))
{
$fields = ft_api_init_form_page(1);
$params = array(
"submit_button" => "form_submitted",
"next_page" => "thank-you.php",
"form_data" => $_POST,
"finalize" => true
);
ft_api_process_form($params);
$fields = array_merge($fields, $_SESSION["form_tools_form"]);
}
else
{
$fields = array_merge($fields, $_POST);
}
}
?>And just above the form...
PHP Code:
<?php
if(!empty($errors))
{
echo "<div class='error'>Please fix the following errors:\n<ul>";
foreach($errors as $error)
{
echo "<li>$error</li>\n";
}
echo "</ul></div>\n";
}
?>