PHP 7 Programming Cookbook

Chapter 2. Using PHP 7 High Performance Features

In this chapter we will discuss and understand the syntax differences between PHP 5 and PHP 7, featuring the following recipes:

• Understanding the abstract syntax tree
• Understanding differences in parsing
• Understanding differences in foreach() handling
• Improving performance using PHP 7 enhancements
• Iterating through a massive file
• Uploading a spreadsheet into a database
• Recursive directory iterator

Introduction

In this chapter we will move directly into PHP 7, presenting recipes that take advantage of new high performance features. First, however, we will present a series of smaller recipes that serve to illustrate the differences in how PHP 7 handles parameter parsing, syntax, a foreach() loop, and other ...