Count page PDF with Imagick (Prestashop) - php

Question

I use Imagick to count the number of pages in my PDF which is uploaded by the client except that my var_dump does not return any results.
Here is my prestashop code from my ProductController.php controller for uploading files.
class ProductController extends ProductControllerCore
{
const CUSTOMIZATION_FILE_DIR = 'customizations';
protected function pictureUpload()
{
if (!($field_ids = $this->product->getCustomizationFieldIds()))
return false;
$authorized_file_fields = array();
foreach ($field_ids AS $field_id)
{
if ($field_id['type'] == Product::CUSTOMIZE_FILE)
$authorized_file_fields[(int)$field_id['id_customization_field']] = 'file' . (int)$field_id['id_customization_field'];
}
$indexes = array_flip($authorized_file_fields);
foreach ($_FILES AS $field_name => $file)
{
if (in_array($field_name, $authorized_file_fields) AND isset($file['tmp_name']) AND !empty($file['tmp_name']))
{
// If there is an upload error, let the parent handle it
if ($file['error'] != UPLOAD_ERR_OK)
continue;
// If the file is not allowed, let the parent handle it
if (!$this->isUploadTypeAllowed($file))
continue;
// Unset the PDF to prevent the parent to handle this file
unset($_FILES[$field_name]);
// Create dir
mkdir(_PS_UPLOAD_DIR_ . ProductController::CUSTOMIZATION_FILE_DIR.'/'.$this->context->cart->id, 0777, true);
// Mark the file as a custom upload
$file_name = ProductController::CUSTOMIZATION_FILE_DIR.'/'.$this->context->cart->id.'/P'. md5(uniqid(rand(), true)).'.pdf';
$doc = exec("identify -format %n $file_name");
var_dump($doc);
$tmp_name = tempnam(_PS_TMP_IMG_DIR_, 'PS');
if (!move_uploaded_file($file['tmp_name'], $tmp_name))
{
$this->errors[] = Tools::displayError('An error occurred during the PDF upload.');
return false;
}
// Copy file to the upload dir
if (!copy($tmp_name, _PS_UPLOAD_DIR_.$file_name))
{
$this->errors[] = Tools::displayError('An error occurred during the PDF upload.');
return false;
}
// Chmod the new file
if (!chmod(_PS_UPLOAD_DIR_.$file_name, 0777))
{
$this->errors[] = Tools::displayError('An error occurred during the PDF upload.');
return false;
}
// Create a fake thumb to avoid error on delete, this hack avoids lots of core method override
file_put_contents(_PS_UPLOAD_DIR_ . $file_name . '_small', '');
chmod(_PS_UPLOAD_DIR_ . $file_name . '_small', 0777);
// Register the file
$this->context->cart->addPictureToProduct($this->product->id, $indexes[$field_name], Product::CUSTOMIZE_FILE, $file_name);
// Remove tmp file
unlink($tmp_name);
}
}
return parent::pictureUpload();
}
protected function isUploadTypeAllowed($file)
{
/* Detect mime content type */
$mime_type = false;
$types = array('application/pdf', 'application/zip'); // Extra mime types can be added here
if (function_exists('finfo_open'))
{
$finfo = finfo_open(FILEINFO_MIME);
$mime_type = finfo_file($finfo, $file['tmp_name']);
finfo_close($finfo);
}
elseif (function_exists('mime_content_type'))
{
$mime_type = mime_content_type($file['tmp_name']);
}
elseif (function_exists('exec'))
{
$mime_type = trim(exec('file -b --mime-type '.escapeshellarg($file['tmp_name'])));
}
if (empty($mime_type) || $mime_type == 'regular file')
{
$mime_type = $file['type'];
}
if (($pos = strpos($mime_type, ';')) !== false)
$mime_type = substr($mime_type, 0, $pos);
// is it allowed?
return $mime_type && in_array($mime_type, $types);
}
}
Thank you.