WordPress Options Page

<?php

// My First Options Page = mfop

/*-- GLOBAL VARIABLES -- */
$mfop_options = get_option('mfop_theme_options');

/**
* add Theme options page - under "Appearance" submenu
*/

function mfop_admin_page() {
    add_theme_page(
        __( 'Theme Options Page', 'mytheme' ),
        __( 'Theme Options Menu', 'mytheme' ),
        'edit_theme_options',
        'sections_name',
        'mfop_options_builder');
}
add_action('admin_menu', 'mfop_admin_page');

   /**
    * Initialize admin pages
    */

function mfop_admin_init(){

    register_setting( 'mfop_options', 'mfop_theme_options', 'mfop_options_validate' );
    add_settings_section('mfop_main', __( 'Main Settings Page:', 'mytheme' ), 'mfop_section_text', 'sections_name');
    add_settings_field('enable_checkbox', __( 'Enable Box:', 'mytheme' ), 'mfop_setting_checkbox', 'sections_name', 'mfop_main');
    add_settings_field('mfop_text_string', __( 'Text Input:', 'mytheme' ), 'mfop_setting_text', 'sections_name', 'mfop_main');
     add_settings_field('color_scheme', __( 'Color Scheme Selection:', 'mytheme' ), 'mfop_color_scheme_setting', 'sections_name', 'mfop_main');

}
add_action('admin_init', 'mfop_admin_init');

/*
* Options builder - using Settings API
* No more Tables!
*/

function mfop_options_builder() {
    ?>
    <div class="wrap">
        <?php screen_icon(); ?>
        <h2><?php _e( 'My Theme Options Page', 'mytheme' ); ?></h2>

        <form method="post" action="options.php">
            <?php
                settings_fields( 'mfop_options' );
                do_settings_sections( 'sections_name' );
                submit_button();
            ?>
        </form>
    </div>
    <?php
}


    /**
    *  Callback ee add_settings_field() waxa la waafajinayaa
    */

// CHECKBOX
function mfop_setting_checkbox() {
    global $mfop_options;
    if($mfop_options['enable']) { $checked = ' checked="checked" '; }
    echo "<input ".$checked." id='enable_checkbox' name='mfop_theme_options[enable]' type='checkbox' />";
}

// TWITTER
function mfop_setting_text() {
    global $mfop_options;
    echo "<input id='mfop_text_string' name='mfop_theme_options[twitter_url]' size='40' type='text' value='{$mfop_options['twitter_url']}' />";
}

// COLOR SCHEME

function mfop_color_scheme_setting() {
   global $mfop_options;
   $items = array("Red", "Blue");

   echo "<select name='mfop_theme_options[color_scheme]'>";
   foreach ($items as $item) {
      $selected = ( $mfop_options['color_scheme'] === $item ) ? 'selected = "selected"' : '';
      echo "<option value='$item' $selected>$item</option>";
   }
   echo "</select>";
}
    /**
    * Validate options
    */
function mfop_options_validate  () {}
function mfop_section_text () {}
?>