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Este libro de WordPress (versión 5.4.1 en el momento de su escritura), está dirigido a desarrolladores profesionales, autodidactas y apasionados con conocimientos de PHP. Le permite comprender el funcionamiento de este CMS y adquirir un dominio del desarrollo de extensiones en PHP, siguiendo un aprendizaje progresivo. El autor presenta la interacción entre PHP y el backoffice de CMS a través de varios ejemplos, que evolucionan desde la programación procedimental a la programación orientada a objetos, mediante el uso de consultas SQL. A continuación, presenta la interacción con AJAX/JSON. El lector aprende a instalar WordPress, a utilizar la herramienta de istración, a añadir funcionalidades, a usar extensiones para desarrolladores, a registrarse en la base de datos, a añadir tablas para dominar completamente las bases del funcionamiento del CMS y posteriormente, aprender a crear temas avanzados, widgets y extensiones. Una parte del libro trata sobre GDPR, SEO, optimización, seguridad, traducción, migración, implantación, etc. También se detallan las extensiones esenciales como ACF, Duplicator, WooCommerce o Yoast SEO. Hay un capítulo dedicado a WooCommerce, que permite al lector usar fácilmente sus clases, funciones y hooks y de esta manera, recuperar cualquier información en su código PHP para crear una tienda en línea. Las funciones específicas de WordPress se detallan con ejemplos y escenarios a través de trabajos prácticos: creación y adición de funcionalidades en la istración de un tema, creación de un tema a partir de una maqueta HTML, adición de un editor wysiwyg, creación de una extensión de rastro de migas de pan, creación de un widget, creación de una extensión de Google Maps y creación de una extensión con un formulario para recuperar direcciones de correo electrónico en AJAX/JSON. Los enlaces a la guía de referencia así como al campo léxico utilizado, darán las claves necesarias para profundizar en el conocimiento sobre cualquier tema específico.Se pueden descargar elementos adicionales del sitio www. https://www.ediciones-eni.com/.