Facebook feed grabber WP

facebook.php

<?php
	function authenticate(  ) {
		
		// Check that we have an App ID
		if ( $this->appId == null )
			return false;
		
		// Check that we have a secret
		if ( $this->secret == null )
			return false;
		
		// Make our facebook connection.
		$this->facebook = new Facebook(array(
			  'appId'  => $this->appId,
			  'secret' => $this->secret,
			));

        /* START CHANGE */
        // proxy support
        if(array_key_exists('proxy_url', $this->options) && !empty($this->options['proxy_url'])) {
		    Facebook::$CURL_OPTS[CURLOPT_PROXY] = $this->options['proxy_url'];
	}
       /* END CHANGE */
	    
		if ( $this->facebook === false )
			return false;
		else
			return $this;
	}
	// End authenticate()

ffg-options.php

<?php

	/* - - - - - -
		
		Register our settings.
		
	- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
	function settings_api_init() {
		
		register_setting( 'facebook-feed-grabber', 'ffg_options', array(&$this, 'validate_options') ); 

		// App ID & Secret
		add_settings_section('fb_app_info', __('Facebook App ID & Secret'), array(&$this, 'setting_section_callback_function'), __file__);
		add_settings_field('ffg_app_id', __('App ID'), array(&$this, 'app_id_field'), __file__, 'fb_app_info');
		add_settings_field('ffg_secret', __('App Secret'), array(&$this, 'secret_field'), __FILE__, 'fb_app_info');
		add_settings_field('ffg_verify', __('Verify App Id & Secret'), array(&$this, 'verify_button'), __FILE__, 'fb_app_info');

		// Misc Settings
		add_settings_section('misc_settings', __('Misc Settings'), array(&$this, 'setting_section_callback_function'), __file__);
		add_settings_field('ffg_default_feed', __('Default Feed'), array(&$this, 'default_feed_field'), __file__, 'misc_settings');
		add_settings_field('ffg_num_entries', __('Number of Entries'), array(&$this, 'num_entries_field'), __file__, 'misc_settings');
        /* START CHANGE */
		add_settings_field('ffg_proxy_url', __('Proxy URL'), array(&$this, 'proxy_url_field'), 
__file__, 'misc_settings');
        /* END CHANGE */
		add_settings_field('ffg_show_title', __('Show Title'), array(&$this, 'show_title_checkbox'), __FILE__, 'misc_settings');
		add_settings_field('ffg_limit', __('Limit to Posts From Feed'), array(&$this, 'limit_checkbox'), __FILE__, 'misc_settings');
		// add_settings_field('ffg_show_thumbnails', __('Show Thumbnails'), array(&$this, 'show_thumbnails_checkbox'), __FILE__, 'misc_settings' );
		add_settings_field('ffg_style_sheet', __('Styles Sheet'), array(&$this, 'style_sheet_radio'), __FILE__, 'misc_settings');
		add_settings_field('delete_options', __('Delete Options on Deactivation'), array(&$this, 'delete_options_checkbox'), __FILE__, 'misc_settings');

	}
	// End settings_api_init()

// .............
        /* START CHANGE */
	/* - - - - - -
		
		Proxy URL field
		
	- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
	function proxy_url_field() {
		?>
		<input type="text" name="ffg_options[proxy_url]" value="<?php echo esc_attr($this->options['proxy_url']); ?>" class="regular-text" /> 
		<span class="description"><?php _e('If your server connects to internet via a proxy, set the URL. Otherwise leave blank.') ?></span>
		<?php
	}
	// End proxy_url_field()
        /* END CHANGE */