Book Image

Mastering PHP Design Patterns

By : Junade Ali
Book Image

Mastering PHP Design Patterns

By: Junade Ali

Overview of this book

Design patterns are a clever way to solve common architectural issues that arise during software development. With an increase in demand for enhanced programming techniques and the versatile nature of PHP, a deep understanding of PHP design patterns is critical to achieve efficiency while coding. This comprehensive guide will show you how to achieve better organization structure over your code through learning common methodologies to solve architectural problems. You’ll also learn about the new functionalities that PHP 7 has to offer. Starting with a brief introduction to design patterns, you quickly dive deep into the three main architectural patterns: Creational, Behavioral, and Structural popularly known as the Gang of Four patterns. Over the course of the book, you will get a deep understanding of object creation mechanisms, advanced techniques that address issues concerned with linking objects together, and improved methods to access your code. You will also learn about Anti-Patterns and the best methodologies to adopt when building a PHP 7 application. With a concluding chapter on best practices, this book is a complete guide that will equip you to utilize design patterns in PHP 7 to achieve maximum productivity, ensuring an enhanced software development experience.
Table of Contents (14 chapters)
Mastering PHP Design Patterns
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface

Scheduled Task pattern


A scheduled task fundamentally consists of three things: the task itself, the jobs that do the scheduling by defining when the task that is being run and when it is permitted to run, and finally, the job registry that executes this job.

Commonly, these are implemented by using cron on Linux servers. You add a line to the configuration file using the following configuration syntax:

     # ┌───────────── min (0 - 59)
     # │ ┌────────────── hour (0 - 23)
     # │ │ ┌─────────────── day of month (1 - 31)
     # │ │ │ ┌──────────────── month (1 - 12)
     # │ │ │ │ ┌───────────────── day of week (0 - 6) (0 to 6 are Sunday to
     # │ │ │ │ │                  Saturday, or use names; 7 is also Sunday)
     # │ │ │ │ │
     # │ │ │ │ │
     # * * * * *  command to execute

You can ordinarily edit the cron file by running crontab -e in the command line. You can schedule any Linux command using this pattern. Here's a cronjob that...