Files_DUMP

            \Zend\Debug\Debug::dump($request->getFiles()->toArray()['incident']['attachedFiles']);die();
            
            array (size=3)
  0 => 
    array (size=5)
      'name' => string 'GON.PNG' (length=7)
      'type' => string 'image/png' (length=9)
      'tmp_name' => string 'D:\DevBox\php_tmp\phpA7F2.tmp' (length=29)
      'error' => int 0
      'size' => int 4099156
  1 => 
    array (size=5)
      'name' => string '1498520.jpg' (length=11)
      'type' => string 'image/jpeg' (length=10)
      'tmp_name' => string 'D:\DevBox\php_tmp\phpA803.tmp' (length=29)
      'error' => int 0
      'size' => int 293815
  2 => 
    array (size=5)
      'name' => string '10014654_710780645639034_820628453_n.jpg' (length=40)
      'type' => string 'image/jpeg' (length=10)
      'tmp_name' => string 'D:\DevBox\php_tmp\phpA804.tmp' (length=29)
      'error' => int 0
      'size' => int 45509

TheController.php

<?php
    public function indexAction()
    {
        $request = $this->getRequest();

        if($request->isPost())
        {
            $post = array_merge_recursive(
                $request->getPost()->toArray(),
                $request->getFiles()->toArray()
            );

            $this->incidentForm->setData($post);

            if($this->incidentForm->isValid()) {
                \Zend\Debug\Debug::dump($this->incidentForm->getData());
                die();
            }
        }

        return [
            'form' => $this->incidentForm
        ];
    }

TheFilter.php

<?php


        $singleFileFilter = new InputFilter();
        $singleFileFilter->add(
            [
                'name'     => 'attachment',
                'required' => false,
                'filters'  => [
                    [
                        'name'    => 'filerenameupload',
                        'options' => [
                            'target'          => '/data/incident_attachments/',
                            'randomize'       => true,
                            'use_upload_name' => false,
                            'overwrite'       => false
                        ]
                    ]
                ]
            ]
        );

        $attachedFilesFilter = new CollectionInputFilter();
        $attachedFilesFilter->setInputFilter($singleFileFilter);

        $this->add($attachedFilesFilter, 'attachedFiles');

TheForm.php

<?php


        $fileElement = new Element\File('attachment');
        $fileElement->setOptions(
            [
                'label'            => 'Add Attachment',
                'label_attributes' => [
                    'class' => 'control-label col-sm-3'
                ]
            ]
        );
        $fileElement->setAttributes([
            'class' => 'form-control'
        ]);

        $this->add(
            [
                'name'    => 'attachedFiles',
                'type'    => 'collection',
                'options' => [
                    'count'          => 3,
                    'target_element' => $fileElement
                ]
            ]
        );

TheOutput

object(Krankikom\Entity\Incident)[467]
  protected 'id' => null
  protected 'logDate' => null
  protected 'incidentTime' => 
    object(DateTime)[730]
      public 'date' => string '2014-05-15 02:55:39' (length=19)
      public 'timezone_type' => int 3
      public 'timezone' => string 'Europe/Berlin' (length=13)
  protected 'incidentLocation' => null
  protected 'incidentType' => null
  protected 'affectedPersons' => 
    object(Doctrine\Common\Collections\ArrayCollection)[468]
      private '_elements' => 
        array (size=1)
          0 => 
            object(Krankikom\Entity\Person)[600]
              ...
  protected 'reportingPerson' => 
    object(Krankikom\Entity\Person)[504]
      protected 'id' => null
      protected 'incident' => null
      protected 'title' => string '' (length=0)
      protected 'firstName' => string '44' (length=2)
      protected 'surName' => string '44' (length=2)
      protected 'dateOfBirth' => 
        object(DateTime)[728]
          public 'date' => string '2014-05-02 00:00:00' (length=19)
          public 'timezone_type' => int 3
          public 'timezone' => string 'Europe/Berlin' (length=13)
      protected 'address' => string '44' (length=2)
  protected 'damagedItems' => string '' (length=0)
  protected 'takenItems' => string '' (length=0)
  protected 'businessDisruption' => boolean true
  protected 'crimeReferenceNumber' => string '' (length=0)
  protected 'description' => string '123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123123' (length=132)
  protected 'attachedFiles' => 
    array (size=3)
      0 => 
        array (size=0)
          empty
      1 => 
        array (size=0)
          empty
      2 => 
        array (size=0)
          empty