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Este libro recopila conocimientos avanzados de PHP 5 destinados a mejorar el uso y aprovechamiento de este lenguaje para aquellas personas que ya están familiarizadas con un uso básico del mismo. Para lograr un texto realmente útil se ha filtrado tanto el propio manual oficial de PHP 5 como el resto de la documentación disponible, aplicando a ello la experiencia del autor en el desarrollo de sitios dinámicos. Por lo tanto, pese a ser una obra teórica, el lector encontrará que puede sacarle un partido práctico inmediato a su contenido. Además, se ha pensado en aquellas personas que desean optar al título de Zend Certified Engineer, que Zend (la empresa desarrolladora de PHP) otorga mediante un examen. A este fin, se ha incluido en el libro el material que constituye dicho examen. No obstante, si usted no dispone del tiempo necesario para prepararse para la prueba, o no necesita el título, encontrará igualmente útil el material aquí recopilado. El uso de las técnicas descritas le permitirá crear páginas dinámicas de gran eficiencia, robustez y portabilidad. Si usted es profesional, este libro constituye una herramienta de consulta imprescindible para su día a día en la Red. El texto va orientado, en todo caso, a personas que ya están familiarizadas con los conceptos básicos de programación en el lado del servidor. Si no es su caso, el autor le recomienda la lectura previa de su obra Domine PHP y MySQL, publicada por esta misma editorial, que le introducirá en el fascinante mundo de la creación de sitios dinámicos. El autor ha hecho un esfuerzo excepcional para que este libro le resulte de utilidad. Si le permite mejorar sus técnicas de programación, y lograr resultados más eficientes, habrá merecido la pena.