Will Give Karma for Help – wp_handle_upload and options.php

Ok, been using this forum for a few months now. Just getting my hands dirty with PHP. I prefer to dig through Google (as to not bother anyone when I’m stuck), but, I’ve been working at this for 3 days and can’t get it.

I’m trying to create a plugin that will allow me to upload an image (ad) and then insert it into any post I choose.

I’m using preg_replace() with <!–ad–> as my insert into the individual posts. That works fine.

And, I’ve managed to get pics uploaded with the wordpress uploader.

PROBLEM: $_FILES returns NULL when I finish the upload so I don’t know how to access the file name to use for the preg_replace.

From research I’m guessing I need to access the array in the saved WordPress options somewhere, but I have no idea how to do that.

Here’s the plugin code I’ve got…

ps. my ini file is fine as other uploads have worked and returned $_FILES array.

////////////////////////////////////////////
//Admin interface
////////////////////////////////////////////

// add the admin page and such
add_action('admin_init', 'ud_admin_init');
function ud_admin_init() {
    register_setting( 'ud_options', 'ud_options', 'ud_options_validate' );
    add_settings_section('ud_main', 'Main Section', 'ud_section_text', 'ud');
    add_settings_field('ud_filename', 'File:', 'ud_setting_filename', 'ud', 'ud_main');
}

// add the admin options page
add_action('admin_menu', 'ud_admin_add_page');
function ud_admin_add_page() {
    $mypage = add_options_page('Upload Demo', 'Upload Demo', 'manage_options', 'ud', 'ud_options_page');
}

// display the admin options page
function ud_options_page() {
?>
    <div class="wrap">
    <h2>Upload Demo</h2>
    <p>You can upload a file. It'll go in the uploads directory.</p>
    <form method="post" enctype="multipart/form-data" action="options.php">
    <?php settings_fields('ud_options'); ?>
    <?php do_settings_sections('ud'); ?>
    <p class="submit">
    <input type="submit" name="Submit" class="button-primary" value="<?php esc_attr_e('Save Changes') ?>" />
    </p>
    </form>

    </div>

<?php

}

function ud_section_text() {
    $options = get_option('ud_options');
    echo '<p>Upload your file here:</p>';
    if ($file = $options['file']) {
        // var_dump($file);
        echo "<img src='{$file['url']}' />";

    }
}

function ud_setting_filename() {
    echo '<input type="file" name="ud_filename" size="40" />';

}

function ud_options_validate($input) {
    $newinput = array();
    if ($_FILES['ud_filename']) {
        $overrides = array('test_form' => false);
        $file = wp_handle_upload($_FILES['ud_filename'], $overrides);
        $newinput['file'] = $file;
    }
    return $newinput; //<-- How do I get to what's in here!?!?!?
}

//////////////////////////////////////////////
// Ad Insert Function
//////////////////////////////////////////////

add_filter('the_content', 'ad_insert_tag', 0);

function ad_insert_tag($content) {
	if (!is_single()) {
		return $content;
	}

	$ad_name = //nothing here yet;
	$adContent = "?><img src=\"https://localhost/site1/wp-content/plugins/in-post-ad/images/$ad_name\"><?php";
	$adInsert = '<!--ad-->';

	if (preg_match($adInsert, $content)) {
		$content = preg_replace($adInsert, '$1' . $adContent . '$2', $content);

	} 

	ob_start();
	eval("?>$content<?");
	$result = ob_get_contents();
	ob_end_clean();

	return $result;
}

I’m a newbie so I apologize if this is an idiot question. Any assistance would be much appreciated.