$_FILES empty at checkout

Question

I have added a bunch of new fields to my checkout form in woocommerce. it reads in the finished php file as such;

    <form name="checkout" method="post" class="checkout woocommerce-checkout processing" action="http://localhost:100/wordpress/checkout/" enctype="multipart/form-data" style="position: relative; zoom: 1;">
        <div id="pagePreview">
            <input type="file" name="CheckoutImageUpload">     
            <div class="BBtextInputFrontend">
                <input class="BBTextBoxFront" placeholder="placeholder">
                <input class="BBInitialValue BBData" type="text" name="BBInitialValue[]">
            </div>
            <div class="BBtextInputFrontend">
                <input class="BBTextBoxFront" placeholder="placeholder">
                <input class="BBInitialValue BBData" type="text" name="BBInitialValue[]">
            </div>
        </div>

        <!-- the rest is the default woocommerce billing inputs -->

        <div class="col2-set" id="customer_details">
            <div class="col-1">
                <div class="woocommerce-billing-fields">
                <h3>Billing Details</h3>

the problem is that the input

<input type="file" name="CheckoutImageUpload">

never returns a value in the $_FILES array. in fact, the $_FILES array always returns an empty array. I can get the other values through $_POST with no issue. but not files. putting the plugin on a fresh install on another separate computer yields the exact same results.

I'm currently using this code to find the values:

function add_image($order_id) {
    //if they DID upload a file...

    if ($_FILES['CheckoutImageUpload']['name']) {
        ?>Y<?php
        die();
    }
    else {
        ?>N<?php
        die();
    }
}
add_action( 'woocommerce_checkout_update_order_meta', 'add_image', 100, 1);

can anyone help? I feel like I'm losing my mind

The complete code mentioned I've added below. what you see above is a shortening of it while keeping the important parts.

  <?php
/*
    @package            BBPlugin
    @wordpress_plugin
    Plugin Name:            Brave books book preview plugin
    Plugin URI:             null
    Description:            Allows the user to single out words to be replaced for a preview in a book.
    Author:                 Goodship
    Version:                0.0.2
    Author URI:             www.Goodship.co.za
*/
// If this file is called directly, abort execution.
if ( ! defined( 'WPINC' ) ) {
    die;
}
ini_set('error_reporting', E_ALL);
// This will attach the file needed for the class which defines
// meta boxes, their tabs, views and partial content.
require_once plugin_dir_path( __FILE__ ) . 'admin/class-BBPlugin.php';


/**
    The class that represents the meta box that will display 
    the navigation tabs and each of the fields for the meta box.
 */
require_once plugin_dir_path( __FILE__ ) . 'admin/class-BBPlugin-meta-box.php';


/* 
    Execute the plugin.

    Everything for this particular plugin will be done so from within 
    the Author_Commentary/admin subpackage. This means that there is no reason to setup
    any hooks until we're in the context of the Author_Commentary_Admin class.
    @since 0.0.1
*/


/* 
    This will create an instance of the BBPlugin_Admin class
    from the class file mentioned previously as soon as the plugin is activated,
    After accepting the plugin name and version parameters.
*/


add_shortcode("BB", "BraveBooksShortCode");
function BraveBooksShortCode( $atts, $content = null , $checkout) {
    $inputDiv =  '<div class="BBtextInputFrontend">
                    <input class="BBTextBoxFront" type="text" placeholder="'.$content.'" />
                    <input class="BBInitialValue BBData" type="text" name="BBInitialValue[]" />
                </div>';
    return $inputDiv;
}







function Run_BBPlugin() {
    $BBPlugin = new BBPlugin_Admin('BB-Plugin', '0.0.1');
    $BBPlugin->initialize_hooks();
}

Run_BBPlugin();
wp_register_style( 'postStyles', '/'.'wp-content/plugins/BBPluginv2/admin/assets/css/BBClasses.css' );

wp_enqueue_style('postStyles');

wp_enqueue_script( 'jquery' );

function load_my_script(){
    wp_register_script(
        'functions',
        '/wp-content/plugins/BBPluginv2/admin/assets/js/functions.js' ,
        array( 'jquery' )
    );
    wp_enqueue_script( 'functions' );
}
add_action('wp_enqueue_scripts', 'load_my_script');






function woo_redirect_to_checkout() {
    $checkout_url = WC()->cart->get_checkout_url();
    return $checkout_url;
}
add_filter ('woocommerce_add_to_cart_redirect', 'woo_redirect_to_checkout');

function check_if_cart_has_product( $valid, $product_id, $quantity ) {
    global $woocommerce;
    $woocommerce->cart->empty_cart();
    $woocommerce->cart->add_to_cart($product_id,0);
    return $valid;
}
add_filter( 'woocommerce_add_to_cart_validation', 'check_if_cart_has_product', 10, 3 );

function change_add_to_cart_loop( $product ) {
    global $product; // this may not be necessary as it should have pulled the object in already
    return '<a href="' . esc_url( $product->get_permalink( $product->id ) ) . '">READ MORE</a>';
}
add_filter( 'woocommerce_loop_add_to_cart_link', 'change_add_to_cart_loop' );


function woo_custom_cart_button_text() {
    return __( 'Buy this book', 'woocommerce' );
}
add_filter( 'woocommerce_product_single_add_to_cart_text', 'woo_custom_cart_button_text' );    // 2.1 +

function wc_remove_all_quantity_fields( $return, $product ) {
    return true;
}
add_filter( 'woocommerce_is_sold_individually', 'wc_remove_all_quantity_fields', 10, 2 );

function wc_add_to_cart_message_filter($message, $product_id = null) {
    $message = sprintf( 'Please remember to enter your details before purchase.');
    return $message;
}
add_filter ( 'wc_add_to_cart_message', 'wc_add_to_cart_message_filter', 10, 2 );








// display the extra data in the order admin panel
function kia_display_order_data_in_admin( $order , $order_id){
    global $woocommerce, $post;?>

    <div class="order_data_column">
        <h4><?php _e( 'Words used' ); ?></h4>
        <?php
        $items = $order->get_items();
        foreach ( $items as $item ) {
            $product_id = $item['product_id'];
            echo '<p>' .json_encode(get_post_meta($product_id, 'BBPlugin-Pages', true) ). '</p>';
            echo '<p>' .json_encode(get_post_meta($post->ID, 'your_key', true) ). '</p>';
        }

        $pageJSONData = json_encode(get_post_meta($product_id, 'BBPlugin-Pages', true));
        $wordsJSONData = json_encode(get_post_meta($post->ID, 'your_key', true));
        ?>
        <script type='text/javascript'>
            var pageArray = <?php echo $pageJSONData ?>;
            var wordsArray = <?php echo $wordsJSONData ?>;
        </script>
        <a href="javascript:restructureInput(pageArray, wordsArray)">Create PDF</a>
    </div>

<?php
}

add_action( 'woocommerce_admin_order_data_after_order_details', 'kia_display_order_data_in_admin' );


/*
** Getting an image to upload
*/
function add_image($order_id, $posted) {
    $sanitized_input_data = array();
    $inputsData = $_POST['BBInitialValue'];
    $filesData = $_FILES['CheckoutImageUpload'];
    $testLog = fopen("testicle.txt","w") or exit ("Unable to open file!");
    fwrite ($testLog , "added files: " . $_FILES['CheckoutImageUpload']['name']);



    foreach ( $inputsData as $inputsBoxNumber => $inputBoxData ) {
        $inputArray = explode( "|", $inputBoxData );
        if ( ! empty( $inputBoxData ) ) {

            $BBData = array(
                    'shortcode' => $inputArray[0],
                    'word_used' => $inputArray[1]
            );
            fwrite ($testLog , "found files: " . $inputArray[0]);
            $sanitized_input_data[ $inputsBoxNumber ] = $BBData;
        }
    }
    fclose ($testLog);

    update_post_meta( $order_id, 'your_key', $sanitized_input_data);

    //if they DID upload a file...

    if ($_FILES['CheckoutImageUpload']['name']) {
        //if no errors...
        if (!$_FILES['CheckoutImageUpload']['error'] ) {
            $valid_file = true;
            //now is the time to modify the future file name and validate the file
            $new_file_name = strtolower($_FILES['CheckoutImageUpload']['tmp_name'] ); //rename file
            if ($_FILES['CheckoutImageUpload']['size'] > ( 1024000 ) ){ //can't be larger than 1 MB
                $valid_file = false;
                $message    = 'Oops!  Your file\'s size is to large.';
                echo $message;
                die();
            }

            //if the file has passed the test
            if ( $valid_file ) {
                //move it to where we want it to be
                //copy( $_FILES['CheckoutImageUpload']['tmp_name'], plugin_dir_path( __FILE__ ) . 'admin' );
                $message = 'Congratulations!  Your file was accepted.';
                echo $message;


                $BBdirectory = wp_upload_dir();
                $BBdirectory = $BBdirectory['path'] .'/'. $order_id .'/';
                if (!file_exists($BBdirectory)) {
                    mkdir($BBdirectory, 0777, true);
                    if (move_uploaded_file($_FILES['CheckoutImageUpload']['tmp_name'], $BBdirectory . $_FILES["CheckoutImageUpload"]['name'])) {
                        echo "Uploaded";
                        die();
                    } else {
                        echo "File was not uploaded";
                        die();
                    }
                }
            }
        } //if there is an error...
        else {
            //set that to be the returned message
            $message = 'Ooops!  Your upload triggered the following error:  ' . $_FILES['CheckoutImageUpload']['error'];
            echo $message;
        }
    }
    else {
    }
}


add_action( 'woocommerce_checkout_update_order_meta', 'add_image', 99, 2);
//add_action( 'woocommerce_checkout_update_order_meta', 'add_image');
/*
function platoon_add_order_meta( $order_id, $posted ) {
    $sanitized_input_data = array();
    $inputsData = $_POST['BBInitialValue'];
    foreach ( $inputsData as $inputsBoxNumber => $inputBoxData ) {
        $inputArray = explode( "|", $inputBoxData );
        if ( ! empty( $inputBoxData ) ) {

            $BBData = array(
                    'shortcode' => $inputArray[0],
                    'word_used' => $inputArray[1]
            );

            $sanitized_input_data[ $inputsBoxNumber ] = $BBData;
        }
    }

    update_post_meta( $order_id, 'your_key', $sanitized_input_data);
}
add_action( 'woocommerce_checkout_update_order_meta', 'platoon_add_order_meta', 99, 2 );
*/

function add_checkout_notice() {


    global $woocommerce;
    $items = $woocommerce->cart->get_cart();
    $item = end($items)['data']->post->ID;

    $pages = get_post_meta( $item, 'BBPlugin-Pages', true );
    echo '<div id="pagePreview">';
    echo    '<input type="file" name="CheckoutImageUpload" />';

    foreach ( $pages as $pageNumber=>$pageData ) {

        if ($pageData["page_type"] == "text_only"){
            $designedData = $pageData["text"];
            $designedData = do_shortcode ( $designedData, false );
            echo $designedData;
        }
        else if ($pageData["page_type"] == "2up"){
            $designedData = $pageData["text"];
            $designedData = do_shortcode ( $designedData, false );
            echo $designedData;
        }
    }
    echo '</div>';
    ?>
    <script>
        function Test(){
            <?php
/*
                $testLog = fopen("testicle.txt","w") or exit ("Unable to open file!");
                fwrite ($testLog , "added files: " . $_FILES['CheckoutImageUpload'] . $_POST['BBInitialValue']);
                fclose ($testLog);
*/
            ?>
        }
    </script>

    <a onclick="Test()" class="btn">Call PHP Function</a>
    <?php
}
add_action( 'woocommerce_checkout_before_customer_details', 'add_checkout_notice');

/*
** end of image upload
*/

?>

I've also included the code below for debugging, and it also returns nothing, so it isn't exclusive to the action.

?>
    <script>
        function Test(){
            <?php
                $testLog = fopen("testicle.txt","w") or exit ("Unable to open file!");
                fwrite ($testLog , "added files: " . $_FILES);
                fclose ($testLog);
            ?>
        }
    </script>

    <a onclick="Test()" class="btn">Call PHP Function</a>
    <?php

Answer 1

"@Fred -ii- I used that link you added to get all the errors and I received this error: [Thu Mar 31 12:23:09.121930 2016] [:error] [pid 11208:tid 1248] [client 127.0.0.1:51335] PHP Notice: Undefined index: CheckoutImageUpload in Z:\Work\J00028 - Brave books plugin\Wordpress stack\apps\wordpress\htdocs\wp-content\plugins\BBPluginv2\BBPlugin.php on line 290, referer: http://localhost:100/wordpress/product/a-book/ Does this help? – Captain Dando"

Your file's name attribute is name="checkoutupload" but you're using $_FILES['CheckoutImageUpload'] throughout your code.

So, to keep you from changing all of the $_FILES['CheckoutImageUpload'] to the named attribute, simply change the file name attribute to name="CheckoutImageUpload".

Also make sure that the folder you are uploading to has the correct path and that it has the proper permissions to write to it.