WP option page

<?php
    if ( ! isset( $_REQUEST['updated'] ) )
        $_REQUEST['updated'] = false; // This checks whether the form has just been submitted.
?>
<div class="wrap">
    <h2>WordPress Standard Coding</h2>

    <?php if ( false !== $_REQUEST['updated'] ) : ?>
        <div class="updated fade"><p><strong><?php _e( 'Options saved' ); ?></strong></p></div>
    <?php endif; // If the form has just been submitted, this shows the notification ?>

    <form method="post" action="options.php">
        <?php
        // Get an array of options from the database.
        $options = get_option( 'sis_plugin_options' );

        settings_fields('sis_standard_plugin_options');
        ?>

        <table class="form-table">
            <tbody>
                <!--
                # Example of input usage
                -->
                <tr valign="top">
                    <th scope="row">
                        <label><?php _e('Input option Example') ?></label>
                    </th>
                    <td>
                        <input type="text" name="sis_plugin_options[foo_text]" id="foo_text" value="<?php esc_attr_e($options['foo_text']); ?>" class="">
                        <p class="description"><?php _e('Text for element, can contain HTML. This text will show on tab, pill and link button. Defaults text is &lsquo; Scroll to top &lsquo;') ?></p>
                    </td>
                </tr>
                <!--
                # Example of selected usage
                # For more about it go to [http://codex.wordpress.org/Function_Reference/selected]
                -->
                <tr valign="top">
                    <th scope="row">
                        <label><?php _e('Select Option Example') ?></label>
                    </th>
                    <td>
                        <select name="sis_plugin_options[foo_select]">
                            <!-- Testing the values with if() -->
                            <option value="volvo" <?php if ( $options['foo_select'] == 'volvo' ) echo 'selected="selected"'; ?>>Volvo</option>
                            <option value="saab" <?php if ( $options['foo_select'] == 'saab' ) echo 'selected="selected"'; ?>>Saab</option>
                            <!-- Using selected() instead -->
                            <option value="fiat" <?php selected( $options['foo_select'], 'fiat' ); ?>>Fiat</option>
                            <option value="audi" <?php selected( $options['foo_select'], 'audi' ); ?>>Audi</option>
                        </select>
                        <p class="description"><?php _e( 'For use in select form fields. Compares two given values. For example, a saved option vs. one chosen in a form and, if the values are the same, adds the selected attribute to the current option tag.' ) ?></p>
                    </td>
                </tr>
                <!--
                # Example of checked usage
                # For more about it go to [http://codex.wordpress.org/Function_Reference/checked]
                -->
                <tr valign="top">
                    <th scope="row">
                        <label><?php _e('Checkbox Option Example') ?></label>
                    </th>
                    <td>
                        <!-- Testing the values with if() -->
                        <input type='checkbox' name='sis_plugin_options[foo_check]' value='bike' <?php if ( 'bike' == $options['foo_check'] ) echo 'checked="checked"'; ?> />I have a bike<br>
                        <!-- Using checked() instead -->
                        <input type="checkbox" name="sis_plugin_options[foo_check]" value="car" <?php checked( $options['foo_check'], 'car' ); ?> />I have a car<br />
                        <p class="description"><?php _e( 'For use in checkbox and radio button form fields. Compares two given values. For example, a saved option vs. one chosen in a form and, if the values are the same, adds the checked attribute to the current radio button or checkbox.' ) ?></p>
                    </td>
                </tr>
                <!--
                # Example of radio usage
                # For more about it go to [http://codex.wordpress.org/Function_Reference/checked]
                -->
                <tr valign="top">
                    <th scope="row">
                        <label><?php _e('Radio Button Example') ?></label>
                    </th>
                    <td>
                        <!-- Testing the values with if() -->
                        <input type='radio' name='sis_plugin_options[foo_radio]' value='Male' <?php if ( 'Male' == $options['foo_radio'] ) echo 'checked="checked"'; ?> />Male<br />
                        <!-- Using checked() instead -->
                        <input type="radio" name="sis_plugin_options[foo_radio]" value="Female" <?php checked( $options['foo_radio'], 'Female' ); ?> />Female<br />
                        <p class="description"><?php _e( 'For use in checkbox and radio button form fields. Compares two given values. For example, a saved option vs. one chosen in a form and, if the values are the same, adds the checked attribute to the current radio button or checkbox.' ) ?></p>
                    </td>
                </tr>
            </tbody>
        </table>
        <p class="submit"><input type="submit" value="<?php _e('Save Changes') ?>" class="button button-primary" id="submit" name="submit"></p>
    </form>
</div>