Add a copy/pasteable plugin update list with quick links to changelogs in wp-admin

plugin-versions.php

<?php
/**
 * Plugin Name: Plugin Versions
 * Description: Adds a Plugin Versions menu in WordPress Admin under Plugins.
 * Author: Terrance Orletsky - Earthman Media
 * Author URI: https://earthmanmedia.com
 * Version: 1.0.4
 */


// Hook to add submenu under Network Admin > Plugins
// if this is a network, add to network, otherwise, add to plugins
if ( is_multisite() ) {
	add_action( 'network_admin_menu', 'em_add_plugin_versions_menu' );
} else {
	add_action( 'admin_menu', 'em_add_plugin_versions_menu' );
}

// Function to add submenu
function em_add_plugin_versions_menu() {
	// if this is a network, add to network, otherwise, add to plugins
	if ( is_multisite() ) {
		$add_plugin_versions_menu_caps = 'manage_network_options';
	} else {
		$add_plugin_versions_menu_caps = 'manage_options';
	}

    add_submenu_page(
        'plugins.php',
        'Plugin Versions',
        'Plugin Versions',
        $add_plugin_versions_menu_caps,
        'plugin-versions',
        'em_display_plugin_versions'
    );
}

// Function to display plugin versions
function em_display_plugin_versions() {
    // Fetch all installed plugins
    $all_plugins = get_plugins();

	if ( isset( $_ENV['PANTHEON_ENVIRONMENT'] ) && in_array( $_ENV['PANTHEON_ENVIRONMENT'], array( 'test', 'live' ), true ) && ( php_sapi_name() !== 'cli' ) ) {

		// Re-Enable Plugin Updates.
		add_action( 'load-update-core.php', 'wp_update_plugins' );
		remove_filter( 'pre_site_transient_update_plugins', '_pantheon_disable_wp_updates' );
	}

	// if this is a network, add to network, otherwise, add to plugins
	if ( is_multisite() ) {
		$add_plugin_versions_network_path = 'network/';
	} else {
		$add_plugin_versions_network_path = '';
	}

    // Trigger update check for plugins
    do_action( 'wp_update_plugins' );

    // Fetch transient data for plugin updates
    $plugin_updates = get_site_transient( 'update_plugins' );

    // Counter to keep track of plugins needing updates
    $update_count = 0;
	$counter      = 0;
	$row_output   = '';

    // Loop through each plugin and output versions
    foreach ( $all_plugins as $plugin_path => $plugin_data ) {
		$counter++;
        $current_version = $plugin_data['Version'];
        $plugin_name     = $plugin_data['Name'];
        // parse the path to get the folder name
		$plugin_slug       = explode( '/', $plugin_path );
		$plugin_slug       = $plugin_slug[0];
		$plugin_url        = '/wp-admin/' . $add_plugin_versions_network_path . 'plugin-install.php?tab=plugin-information&plugin=' . $plugin_slug . '&section=changelog';
		$available_version = '-';
        $row_style         = 'margin: 0; padding: 0; border: 0; font-size: 100%; font: inherit; vertical-align: baseline;';
        $td_style          = 'border-top-color:rgb(221, 221, 221);border-top-style:solid;border-top-width:0.555556px;';

        // Check for updates
        if ( isset( $plugin_updates->response[ $plugin_path ] ) ) {
            $update_data       = $plugin_updates->response[ $plugin_path ];
            $available_version = $update_data->new_version;
            $update_count++;
            $td_style .= ' background-color: #faefb3;';
        }

        // Output each plugin row
        $row_output .= "<tr style='{$row_style}'>";
        $row_output .= "<td style='{$td_style}'><a href='{$plugin_url}' target='_blank' style='text-decoration: none; color: #000;'>{$plugin_name}</a></td>";
        $row_output .= "<td style='{$td_style}'>{$current_version}</td>";
        $row_output .= "<td style='{$td_style}'>{$available_version}</td>";
        $row_output .= '</tr>';
    }

	if ( isset( $_ENV['PANTHEON_ENVIRONMENT'] ) && in_array( $_ENV['PANTHEON_ENVIRONMENT'], array( 'test', 'live' ), true ) && ( php_sapi_name() !== 'cli' ) ) {

		// Re-Disable Plugin Updates.
		remove_action( 'load-update-core.php', 'wp_update_plugins' );
		add_filter( 'pre_site_transient_update_plugins', '_pantheon_disable_wp_updates' );
	}

	// table output
    echo '<hr><h4>Plugins Update Status: <small> ' . $update_count . ' plugins to be updated.</small></h4><table style="margin: 0; padding: 0; border: 0; font-size: 100%; font: inherit; vertical-align: baseline;"><thead style="margin: 0; padding: 0; border: 0; font-size: 100%; font: inherit; vertical-align: baseline;"><tr style="margin: 0; padding: 0; border: 0; font-size: 100%; font: inherit; vertical-align: baseline;"><th style="margin: 0; padding: 0; border: 0; font-size: 100%; font: inherit; vertical-align: baseline;text-align:left;font-weight: bold;">Plugin Name / Link</th><th style="margin: 0; padding: 0; border: 0; font-size: 100%; font: inherit; vertical-align: baseline;text-align:left;font-weight: bold;">Current Version</th><th style="margin: 0; padding: 0; border: 0; font-size: 100%; font: inherit; vertical-align: baseline;text-align:left;font-weight: bold;">Update Available</th></tr></thead><tbody style="margin: 0; padding: 0; border: 0; font-size: 100%; font: inherit; vertical-align: baseline;">' . $row_output . '</tbody></table><br><br><hr>';

}


add_filter( 'map_meta_cap', 'em_allow_plugin_information_access', 10, 4 );

/**
 * Allow access to plugin information page.
 *
 * @param array  $caps    The user's actual capabilities.
 * @param string $cap     Capability name.
 * @param int    $user_id The user ID.
 * @param array  $args    Adds the context to the cap. Typically the object ID.
 *
 * @return array Modified capabilities.
 */
function em_allow_plugin_information_access( $caps, $cap, $user_id, $args ) {
    if ( 'install_plugins' === $cap && defined( 'DISALLOW_FILE_MODS' ) && DISALLOW_FILE_MODS ) {
        $script = basename( $_SERVER['PHP_SELF'] );

        if ( 'plugin-install.php' === $script && isset( $_GET['tab'] ) && 'plugin-information' === $_GET['tab'] ) {
            $caps = array( 'read' );
        }
    }

    return $caps;
}
add_action( 'admin_head-plugin-install.php', 'em_customize_plugin_info_style' );

/**
 * Add custom CSS to the plugin information page in WP Admin.
 */
function em_customize_plugin_info_style() {
    // Check if we're on the correct tab of the plugin install page
    if ( isset( $_GET['tab'] ) && 'plugin-information' === $_GET['tab'] ) {
        echo '<style id="em_customize_plugin_info_style">
            #plugin-information-content {
                padding: 30px !important; /* Adjust padding as needed */
            }
        </style>';
    }
}