Processwire file for uploading a form submission.

preview.php

<div class="form_container">
  				<form action="./" method="post" id="registermail" enctype="multipart/form-data">
 
						<!-- USER CREDENTIALS !-->
 
						<div class="user_credentials">
 
							<p>Scegli username e password</p>
 
								<input type="text" name="username" id="username" maxlenght="20" placeholder="Inserisci il tuo username" />
								<input type="password" name="password" id="password" maxlenght="20" placeholder="Scegli la tua password" />
								<input type="password" name="verify_password" id="verify_password" maxlenght="20" placeholder="Verifica la tua password" />
								<input type="email" name="email" id="email" placeholder="il tuo indirizzo e-mail" />
						</div>
						
						<!-- USER INFO !-->
 
						<div class="user_info">
 
							<p>Qualche tua informazione</p>
 
								<select name="provincia" class="select_list">
                // My options
								</select>
								
								<select name="genere" class="select_list">
                // My options
								</select>
 
								<select name="orientamento" class="select_list">
                // My options
								</select>
 
								<input type="file" name="contact_photo" />
						</div>
						
						<!-- ANNUNCIO !-->
 
						<div class="user_annuncio">
 
							<p>Il tuo annuncio (potrai cambiarlo in qualsiasi momento)</p>
 
								<textarea name="annuncio" id="annuncio" placeholder="Inserisci il tuo annuncio (di almeno 120 caratteri)" /></textarea>
						</div>
								<input type="submit" value="Invia" name="register_submit" id="register_submit" />
					</form>

submit.php

<?php    		
// First, confirm that a submission has been made
require_once('../index.php');
 
$input = wire('input');
$sanitizer = wire('sanitizer');
$config = wire('config');
 
if ($input->post->register_submit)
 
{
 
$upload_path = $config->paths->assets . 'uploads/';
 
// RC: create temp path if it isn't there already
  if(!is_dir($upload_path)) {
    if(!wireMkdir($upload_path)) throw new WireException("No upload path"); 
  }
 
// New wire upload
$u = new WireUpload('contact_photo'); // References the name of the field in the HTML form that uploads the photo
$u->setMaxFiles(5);
$u->setOverwrite(false);
$u->setDestinationPath($upload_path);
$u->setValidExtensions(array('jpg', 'jpeg', 'png', 'gif'));
 
// execute upload and check for errors
$files = $u->execute();
 
// Run a count($files) test to make sure there are actually files; if so, proceed; if not, generate getErrors()
if(!count($files)) {
$u->error("Sorry, but you need to add a photo!");
return false;
}
													    								
// Save in the ProcessWire page tree; map submission to the template fields
$np = new Page(); // create new page object
$np->template = "preview_mails_tmpl"; 
$np->parent = "/preview_mails/";
 
											
// Send all form submissions through ProcessWire sanitization
$email = $sanitizer->email($input->post->email);
$username = $input->post->username;
$password = $input->post->password;
$provincia = $input->post->provincia;
$genere = $input->post->genere;
$orientamento = $input->post->orientamento;
$annuncio = $input->post->annuncio;
 
													
// Match up the sanitized inputs we just got with the template fields
$np->of(false);
$np->title = $email;
$np->email = $email;
$np->username = $username;
$np->password = $password;
$np->provincia = $provincia;
$np->genere = $genere;
$np->orientamento = $orientamento;
$np->annuncio = $annuncio;
 
// Save/create the page
$np->save();
 
// Run photo upload
foreach($files as $filename)
{
$pathname = $upload_path . $filename;
$np->images->add($pathname);
$np->message("Added file: $filename");
unlink($pathname);
}
 
// Save page again
$np->save();
						    										    		
return true;
 
}