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WHAT IS A PLUGIN?
ОглавлениеA plugin in WordPress is a PHP‐based script that extends or alters the core functionality of WordPress. Quite simply, plugins are files installed in WordPress to add a feature, or set of features, to WordPress. Plugins can range in complexity from a simple social networking plugin to an extremely elaborate eCommerce package. There is no limit to what a plugin can do in WordPress; because of this, there is no shortage of plugins available for download.