sudar / email-log

uninstall.php

<?php
/**
 * Uninstall page for Email Log Plugin to clean up db.
 */

// exit if WordPress is not uninstalling the plugin.
if ( ! defined( 'ABSPATH' ) && ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
	exit();
}

if ( is_multisite() ) {
	global $wpdb;

	$original_blog_id = get_current_blog_id();

	$blog_ids = $wpdb->get_col( "SELECT blog_id FROM $wpdb->blogs" );

As per coding-style, please use concatenation or sprintf for the variable $wpdb instead of interpolation.

	foreach ( $blog_ids as $blog_id ) {
		switch_to_blog( $blog_id );
		email_log_delete_table();
	}

	switch_to_blog( $original_blog_id );

} else {
	email_log_delete_table();
}

/**
 * Delete email log table and db option
 *
 * @since 1.7
 *
 * @global object $wpdb
 */
function email_log_delete_table() {
	global $wpdb;
	$table_name = $wpdb->prefix . 'email_log'; // This is hardcoded on purpose

	if ( $wpdb->get_var( "SHOW TABLES LIKE '{$table_name}'" ) == $table_name ) {
		// If table is present, drop it
		$wpdb->query( "DROP TABLE $table_name" );
	}

	// Delete the option
	delete_option( 'email-log-db' );
}