Profile: sergioC-13

add_filter('cred_form_validate', 'cred_filetype_size_validation', 10, 2);

function cred_filetype_size_validation($field_data, $form_data) {                    
    list($fields, $errors) = $field_data;

    if (14 == $form_data['id']) {
        $file_type_uploaded = $_FILES['wpcf-documento-obra-escritor']['type'];
 
        if (!('application/pdf' == $file_type_uploaded) || ($file_type_uploaded == 'application/vnd.openxmlformats-officedocument.wordprocessingml.document')) {
            $errors['documento-obra-escritor'] = 'Sorry, the file you have uploaded is not of the correct type.';   
        } 
    }

    return array($fields, $errors);
}