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Mastering PHP 7

Mastering PHP 7

By : Branko Ajzele
4.7 (7)
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Mastering PHP 7

Mastering PHP 7

4.7 (7)
By: Branko Ajzele

Overview of this book

PHP is a server-side scripting language that is widely used for web development. With this book, you will get a deep understanding of the advanced programming concepts in PHP and how to apply it practically The book starts by unveiling the new features of PHP 7 and walks you through several important standards set by PHP Framework Interop Group (PHP-FIG). You’ll see, in detail, the working of all magic methods, and the importance of effective PHP OOP concepts, which will enable you to write effective PHP code. You will find out how to implement design patterns and resolve dependencies to make your code base more elegant and readable. You will also build web services alongside microservices architecture, interact with databases, and work around third-party packages to enrich applications. This book delves into the details of PHP performance optimization. You will learn about serverless architecture and the reactive programming paradigm that found its way in the PHP ecosystem. The book also explores the best ways of testing your code, debugging, tracing, profiling, and deploying your PHP application. By the end of the book, you will be able to create readable, reliable, and robust applications in PHP to meet modern day requirements in the software industry.
Table of Contents (18 chapters)
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16
Debugging, Tracing, and Profiling

Using __construct()


The __construct() magic method represents a PHP constructor concept similar to that of other OO languages. It allows developers to tap into the object creation process. Classes that have the __construct() method declared, call it on each newly-created object. This allows us to deal with any initialization that the object may need before it is used.

The following code snippet shows the simplest possible use of the __construct() method:

<?php

class User
{
  public function __construct()
  {
    var_dump('__construct');
  }
}

new User;
new User();

Both User instances will yield the same string(11) "__construct" output to the screen. The more complex example might include constructor parameters. Consider the following code snippet:

<?php

class User
{
  protected $name;
  protected $age;

  public function __construct($name, $age)
  {
    $this->name = $name;
    $this->age = $age;
    var_dump($this->name);
    var_dump($this->age);
  }
}

new User; #1
new...
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Mastering PHP 7
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