WordPress Filesystem API

#Overview Overview

Working on files is something interesting thing I have ever seen. Most of the time we need to create the file, update it or do some file operations on it.

PHP provides some file handling functions file_put_contents

• file_?get_?contents
• file_?put_?contents

We can create the dashboard widgets with the help of function wp_add_dashboard_widget() and with the action hook wp_dashboard_setup().

Complete Code is availalbe on Github. Visit WordPress Examples.

So, Let’s create step by step a simple Dashboard Widget which looks like below screenshot:

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#Register Widget Register Widget

Step 1: Add action wp_dashboard_setup with call back function. E.g.

add_action( 'wp_dashboard_setup', 'prefix_add_dashboard_widgets' );

Here, prefix_add_dashboard_widgets is our callback function which adds our dashboard widget.

Step 2: Register dashboard widget with function wp_add_dashboard_widget() by calling it into our callback function prefix_add_dashboard_widgets(). E.g.

/**
 * Add Dashboard Widget.
 *
 * @since 1.0.0
 * @return void
 */
function prefix_add_dashboard_widgets() {
    wp_add_dashboard_widget(
    	'wordpress_example_dashboard_widget', // Widget slug.
        esc_html__( 'Example Widget Title', 'wordpress-examples' ), // Title.
        'prefix_widget_markup' // Display function.
    );
}

Here, Function wp_add_dashboard_widget() have 3 parameters:

• wordpress_example_dashboard_widget – This is a uniqueue widget ID.
• esc_html__( 'Example Widget Title', 'wordpress-examples' ), – Is a Widget Title
• prefix_widget_markup – Is a callback function which render and disaplay the widget markup.

Step 3: Widget markup

/**
 * Dashboard Widget Markup.
 *
 * @since 1.0.0
 * @return void
 */
function prefix_widget_markup() {
    ?>
    <h1><?php esc_html_e( 'Heading 1.', 'wordpress-examples' ); ?></h1>
    <h2><?php esc_html_e( 'Heading 2.', 'wordpress-examples' ); ?></h2>
    <h3><?php esc_html_e( 'Heading 3.', 'wordpress-examples' ); ?></h3>
    <h4><?php esc_html_e( 'Heading 4.', 'wordpress-examples' ); ?></h4>
    <h5><?php esc_html_e( 'Heading 5.', 'wordpress-examples' ); ?></h5>
    <h6><?php esc_html_e( 'Heading 6.', 'wordpress-examples' ); ?></h6>
    <p><?php esc_html_e( 'Simple Paragraph.', 'wordpress-examples' ); ?></p>
    <p class="description"><?php esc_html_e( 'Paragraph with CSS class `description`.', 'wordpress-examples' ); ?></p>
    <?php
}

Great! We have just registered a new Dashboard widget which adds some dummy markup.

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#Output Output

Now go to your dashboard and you can see something like below screenshot:

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#Conclusion Conclusion

We can register the Dashboard widget in WordPress with function wp_add_dashboard_widget() and with the action hook wp_dashboard_setup().

Let’s try it yourself. Happy Coding.