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PHP 7 Programming Cookbook

PHP 7 Programming Cookbook

By : Bierer
4.1 (8)
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PHP 7 Programming Cookbook

PHP 7 Programming Cookbook

4.1 (8)
By: Bierer

Overview of this book

PHP 7 comes with a myriad of new features and great tools to optimize your code and make your code perform faster than in previous versions. Most importantly, it allows you to maintain high traffic on your websites with low-cost hardware and servers through a multithreading web server. This book demonstrates intermediate to advanced PHP techniques with a focus on PHP 7. Each recipe is designed to solve practical, real-world problems faced by PHP developers like yourself every day. We also cover new ways of writing PHP code made possible only in version 7. In addition, we discuss backward-compatibility breaks and give you plenty of guidance on when and where PHP 5 code needs to be changed to produce the correct results when running under PHP 7. This book also incorporates the latest PHP 7.x features. By the end of the book, you will be equipped with the tools and skills required to deliver efficient applications for your websites and enterprises.
Table of Contents (16 chapters)
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15
Index

Iterating through a massive file

Functions such as file_get_contents() and file() are quick and easy to use however, owing to memory limitations, they quickly cause problems when dealing with massive files. The default setting for the php.ini memory_limit setting is 128 megabytes. Accordingly, any file larger than this will not be loaded.

Another consideration when parsing through massive files is how quickly does your function or class method produce output? When producing user output, for example, although it might at first glance seem better to accumulate output in an array. You would then output it all at once for improved efficiency. Unfortunately, this might have an adverse impact on the user experience. It might be better to create a generator, and use the yield keyword to produce immediate results.

How to do it...

As mentioned before, the file* functions (that is, file_get_contents()), are not suitable for large files. The simple reason is that these functions, at one point, have the...

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PHP 7 Programming Cookbook
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