Upload file with delete option and allow extension option

pmpro_rh.php

<?php

/**
* This example is to show you the 'niche' options each Paid Memberships Pro - Register Helper Add-on field can take and how to use it.
* For more information on the Register Helper Add-on please visit https://www.paidmembershipspro.com/add-ons/free-add-ons/pmpro-register-helper-add-checkout-and-profile-fields/
**/

function my_pmprorh_init()
{
    //don't break if Register Helper is not loaded
    if(!function_exists("pmprorh_add_registration_field"))
    {
        return false;
    }
    //define the fields
    $fields = array();
	
  $fields[] = new PMProRH_Field(
        "photo",             // input name, will also be used as meta key
        "file",                    // type of field
        array(
            		'accept' => ".jpg",   // accept .jpg file extension  (http://www.w3schools.com/TAGs/att_input_accept.asp)
			'memberslistcsv' => true,
			'required' => true, // make field required, set value to false to make it optional
			'profile'	=> true,
			'allow_delete' => true
        )
    );
	
	
    foreach($fields as $field)
        pmprorh_add_registration_field(
            "checkout_boxes", // location on checkout page
            $field            // PMProRH_Field object
        );
    //that's it. see the PMPro Register Helper readme for more information and examples.
}
add_action("init", "my_pmprorh_init");