<form method="POST">
    <h3>Editing: my-sites.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php
/**
 * My Sites dashboard.
 *
 * @package WordPress
 * @subpackage Multisite
 * @since 3.0.0
 */

require_once __DIR__ . '/admin.php';

if ( ! is_multisite() ) {
	wp_die( __( 'Multisite support is not enabled.' ) );
}

if ( ! current_user_can( 'read' ) ) {
	wp_die( __( 'Sorry, you are not allowed to access this page.' ) );
}

$action = isset( $_POST['action'] ) ? $_POST['action'] : 'splash';

$blogs = get_blogs_of_user( $current_user-&gt;ID );

$updated = false;
if ( 'updateblogsettings' === $action &amp;&amp; isset( $_POST['primary_blog'] ) ) {
	check_admin_referer( 'update-my-sites' );

	$blog = get_site( (int) $_POST['primary_blog'] );
	if ( $blog &amp;&amp; isset( $blog-&gt;domain ) ) {
		update_user_meta( $current_user-&gt;ID, 'primary_blog', (int) $_POST['primary_blog'] );
		$updated = true;
	} else {
		wp_die( __( 'The primary site you chose does not exist.' ) );
	}
}

// Used in the HTML title tag.
$title       = __( 'My Sites' );
$parent_file = 'index.php';

get_current_screen()-&gt;add_help_tab(
	array(
		'id'      =&gt; 'overview',
		'title'   =&gt; __( 'Overview' ),
		'content' =&gt;
			'&lt;p&gt;' . __( 'This screen shows an individual user all of their sites in this network, and also allows that user to set a primary site. They can use the links under each site to visit either the front end or the dashboard for that site.' ) . '&lt;/p&gt;',
	)
);

get_current_screen()-&gt;set_help_sidebar(
	'&lt;p&gt;&lt;strong&gt;' . __( 'For more information:' ) . '&lt;/strong&gt;&lt;/p&gt;' .
	'&lt;p&gt;' . __( '&lt;a href=&quot;https://codex.wordpress.org/Dashboard_My_Sites_Screen&quot;&gt;Documentation on My Sites&lt;/a&gt;' ) . '&lt;/p&gt;' .
	'&lt;p&gt;' . __( '&lt;a href=&quot;https://wordpress.org/support/forums/&quot;&gt;Support forums&lt;/a&gt;' ) . '&lt;/p&gt;'
);

require_once ABSPATH . 'wp-admin/admin-header.php';

if ( $updated ) {
	wp_admin_notice(
		'&lt;strong&gt;' . __( 'Settings saved.' ) . '&lt;/strong&gt;',
		array(
			'type'        =&gt; 'success',
			'dismissible' =&gt; true,
			'id'          =&gt; 'message',
		)
	);
}
?&gt;

&lt;div class=&quot;wrap&quot;&gt;
&lt;h1 class=&quot;wp-heading-inline&quot;&gt;
&lt;?php
echo esc_html( $title );
?&gt;
&lt;/h1&gt;

&lt;?php
if ( in_array( get_site_option( 'registration' ), array( 'all', 'blog' ), true ) ) {
	/** This filter is documented in wp-login.php */
	$sign_up_url = apply_filters( 'wp_signup_location', network_site_url( 'wp-signup.php' ) );
	printf( ' &lt;a href=&quot;%s&quot; class=&quot;page-title-action&quot;&gt;%s&lt;/a&gt;', esc_url( $sign_up_url ), esc_html__( 'Add New Site' ) );
}

if ( empty( $blogs ) ) :
	wp_admin_notice(
		'&lt;strong&gt;' . __( 'You must be a member of at least one site to use this page.' ) . '&lt;/strong&gt;',
		array(
			'type'        =&gt; 'error',
			'dismissible' =&gt; true,
		)
	);
	?&gt;
	&lt;?php
else :
	?&gt;

&lt;hr class=&quot;wp-header-end&quot;&gt;

&lt;form id=&quot;myblogs&quot; method=&quot;post&quot;&gt;
	&lt;?php
	choose_primary_blog();
	/**
	 * Fires before the sites list on the My Sites screen.
	 *
	 * @since 3.0.0
	 */
	do_action( 'myblogs_allblogs_options' );
	?&gt;
	&lt;br clear=&quot;all&quot; /&gt;
	&lt;ul class=&quot;my-sites striped&quot;&gt;
	&lt;?php
	/**
	 * Filters the settings HTML markup in the Global Settings section on the My Sites screen.
	 *
	 * By default, the Global Settings section is hidden. Passing a non-empty
	 * string to this filter will enable the section, and allow new settings
	 * to be added, either globally or for specific sites.
	 *
	 * @since MU (3.0.0)
	 *
	 * @param string $settings_html The settings HTML markup. Default empty.
	 * @param string $context       Context of the setting (global or site-specific). Default 'global'.
	 */
	$settings_html = apply_filters( 'myblogs_options', '', 'global' );

	if ( $settings_html ) {
		echo '&lt;h3&gt;' . __( 'Global Settings' ) . '&lt;/h3&gt;';
		echo $settings_html;
	}

	reset( $blogs );

	foreach ( $blogs as $user_blog ) {
		switch_to_blog( $user_blog-&gt;userblog_id );

		echo '&lt;li&gt;';
		echo &quot;&lt;h3&gt;{$user_blog-&gt;blogname}&lt;/h3&gt;&quot;;

		$actions = &quot;&lt;a href='&quot; . esc_url( home_url() ) . &quot;'&gt;&quot; . __( 'Visit' ) . '&lt;/a&gt;';

		if ( current_user_can( 'read' ) ) {
			$actions .= &quot; | &lt;a href='&quot; . esc_url( admin_url() ) . &quot;'&gt;&quot; . __( 'Dashboard' ) . '&lt;/a&gt;';
		}

		/**
		 * Filters the row links displayed for each site on the My Sites screen.
		 *
		 * @since MU (3.0.0)
		 *
		 * @param string $actions   The HTML site link markup.
		 * @param object $user_blog An object containing the site data.
		 */
		$actions = apply_filters( 'myblogs_blog_actions', $actions, $user_blog );

		echo &quot;&lt;p class='my-sites-actions'&gt;&quot; . $actions . '&lt;/p&gt;';

		/** This filter is documented in wp-admin/my-sites.php */
		echo apply_filters( 'myblogs_options', '', $user_blog );

		echo '&lt;/li&gt;';

		restore_current_blog();
	}
	?&gt;
	&lt;/ul&gt;
	&lt;?php
	if ( count( $blogs ) &gt; 1 || has_action( 'myblogs_allblogs_options' ) || has_filter( 'myblogs_options' ) ) {
		?&gt;
		&lt;input type=&quot;hidden&quot; name=&quot;action&quot; value=&quot;updateblogsettings&quot; /&gt;
		&lt;?php
		wp_nonce_field( 'update-my-sites' );
		submit_button();
	}
	?&gt;
	&lt;/form&gt;
&lt;?php endif; ?&gt;
	&lt;/div&gt;
&lt;?php
require_once ABSPATH . 'wp-admin/admin-footer.php';
</textarea><br>
    <input type="submit" value="Save">
</form>