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You can add custom columns to the Manage Sites table to display additional site information. This guide shows how to create columns using PHP filters in the Custom Dashboard extension.

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What You’ll Learn

  • How to add custom columns to the Manage Sites table
  • How to populate columns with site data
  • How to position columns in the table

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Prerequisites

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Example: Add a cURL Version Column

This example adds a column that displays the cURL version for each child site.
1

Install Custom Dashboard

Install the Custom Dashboard extension.
2

Open the extension

Navigate to MainWP > Add-ons > Custom Dashboard.
3

Add the PHP code

Go to the PHP tab and add this code:
add_filter( 'mainwp_sitestable_getcolumns', 'mycustom_sites_table_column', 10 );
function mycustom_sites_table_column( $cols ) {
    $cols['child_curl_version'] = 'cURL Version';
    return $cols;
}

add_filter( 'mainwp_sitestable_item', 'mycustom_sitestable_item', 10 );
function mycustom_sitestable_item( $item ) {
    $options = apply_filters( 'mainwp_getwebsiteoptions', array(), $item['id'], 'site_info' );
    $website_info = json_decode( $options, true );
    if ( is_array( $website_info ) && isset( $website_info['child_curl_version'] ) ) {
        $item['child_curl_version'] = $website_info['child_curl_version'];
    } else {
        $item['child_curl_version'] = '';
    }
    return $item;
}
4

Save changes

Click Save Changes.
5

Verify the column

Navigate to MainWP > Sites > Manage Sites to see the new column.Manage Sites table showing the new cURL Version column
6

Position the column

Drag and drop the column header to your preferred position.

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How It Works

The code uses two WordPress filters:
FilterPurpose
mainwp_sitestable_getcolumnsRegisters the new column in the table header
mainwp_sitestable_itemPopulates the column with data for each row

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Code Structure

// Step 1: Register the column
add_filter( 'mainwp_sitestable_getcolumns', 'my_custom_column', 10 );
function my_custom_column( $cols ) {
    $cols['column_key'] = 'Column Header';  // Key must be unique
    return $cols;
}

// Step 2: Populate the column data
add_filter( 'mainwp_sitestable_item', 'my_custom_item', 10 );
function my_custom_item( $item ) {
    $item['column_key'] = 'Value';  // Key matches the column key above
    return $item;
}

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Available Site Data

You can access various site information through the mainwp_getwebsiteoptions filter: 
$options = apply_filters( 'mainwp_getwebsiteoptions', array(), $item['id'], 'site_info' );
$website_info = json_decode( $options, true );
Common available fields include:
  • child_curl_version - cURL version
  • child_openssl_version - OpenSSL version used by cURL
  • child_version - MainWP Child version
  • db_size - Database size
  • debug_mode - Whether WordPress debug mode is enabled
  • format_datetime - Site timezone, date format, and time format settings
  • ip - Server IP address
  • memory_limit - PHP memory limit
  • mysql_version - MySQL version
  • phpversion - PHP version
  • site_lang - Site locale
  • site_public - Search engine visibility value
  • themeactivated - Active theme name
  • wpversion - WordPress version
child_site_info is not a field returned by site_info. The site_info option already contains the available site data as an array.

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Other Column Examples

  • Create a column that outputs any value or HTML you assign to $item['column_key']

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Self-Check Checklist

  • Custom Dashboard extension installed
  • PHP code added and saved
  • New column appears in Manage Sites table
  • Column displays correct data
  • Column positioned as desired