Added WordPress_Notes.txt

diff --git a/WordPress_Notes.txt b/WordPress_Notes.txt
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+WordPress Notes:
+
+* Programatically Install/Upgrade Plugins
+
+
+
+
+
+Programatically Install/Upgrade Plugins
+---------------------------------------
+
+From site...
+https://wpreset.com/programmatically-automatically-download-install-activate-wordpress-plugins/
+
+
+// pseudo code only!
+// DO NOT copy & paste
+
+var $old_plugin;
+var $new_plugin;
+
+if ( is_plugin_installed( $new_plugin ) ) {
+  // new plugin is already installed
+  // make sure we have the last version
+  upgrade_plugin( $new_plugin );
+} else {
+  install_plugin( $new_plugin );
+}
+
+if ( !is_plugin_active( $new_plugin ) ) {
+  // new plugin is not active - activate it
+  activate_plugin( $new_plugin );
+}
+
+// deactivate old plugin
+deactivate_plugin( $old_plugin );
+
+// if needed delete old plugin
+delete_plugin( $old_plugin );
+
+// pseudo code only!
+// DO NOT copy & paste
+
+
+// Support Functions
+
+function replace_plugin() {
+  // modify these variables with your new/old plugin values
+  $plugin_slug = 'wp-reset/wp-reset.php';
+  $plugin_zip = 'https://downloads.wordpress.org/plugin/wp-reset.latest-stable.zip';
+  $old_plugin_slug = 'reset-wp/reset-wp.php';
+
+  echo 'If things are not done in a minute <a href="plugins.php">click here to return to Plugins page</a><br><br>';
+  echo 'Starting ...<br><br>';
+
+  echo 'Check if new plugin is already installed - ';
+  if ( is_plugin_installed( $plugin_slug ) ) {
+    echo 'it\'s installed! Making sure it\'s the latest version.';
+    upgrade_plugin( $plugin_slug );
+    $installed = true;
+  } else {
+    echo 'it\'s not installed. Installing.';
+    $installed = install_plugin( $plugin_zip );
+  }
+
+  if ( !is_wp_error( $installed ) && $installed ) {
+    echo 'Activating new plugin.';
+    $activate = activate_plugin( $plugin_slug );
+
+    if ( is_null($activate) ) {
+      echo '<br>Deactivating old plugin.<br>';
+      deactivate_plugins( array( $old_plugin_slug ) );
+
+      echo '<br>Done! Everything went smooth.';
+    }
+  } else {
+    echo 'Could not install the new plugin.';
+  }
+}
+
+function is_plugin_installed( $slug ) {
+  if ( ! function_exists( 'get_plugins' ) ) {
+    require_once ABSPATH . 'wp-admin/includes/plugin.php';
+  }
+  $all_plugins = get_plugins();
+
+  if ( !empty( $all_plugins[$slug] ) ) {
+    return true;
+  } else {
+    return false;
+  }
+}
+
+function install_plugin( $plugin_zip ) {
+  include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
+  wp_cache_flush();
+
+  $upgrader = new Plugin_Upgrader();
+  $installed = $upgrader->install( $plugin_zip );
+
+  return $installed;
+}
+
+function upgrade_plugin( $plugin_slug ) {
+  include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
+  wp_cache_flush();
+
+  $upgrader = new Plugin_Upgrader();
+  $upgraded = $upgrader->upgrade( $plugin_slug );
+
+  return $upgraded;
+}
+
+