August 2017
Intermediate to advanced
151 pages
2h 5m
English
book
Better PHP Development
by Younes Rafie, Reza Lavaryan, Christopher Pitt, Bruno Skvorc, Thomas Punt
Content preview from Better PHP Development
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Chapter 1: How PHP Executes—from Source Code to Render
by Thomas Punt
Peer reviewed by Younes Rafie.
Introduction
There's a lot going on under the hood when we execute a piece of PHP code. Broadly speaking, the PHP interpreter goes through four stages when executing code:
- Lexing
- Parsing
- Compilation
- Interpretation
This piece will skim through these stages and show how we can view the output from each stage to really see what is going on. Note that while some of the extensions used should already be a part of your PHP installation (such as tokenizer and OPcache), others will need to be manually installed and enabled (such as php-ast and VLD).
Stage 1 - Lexing
Lexing (or tokenizing) is the process of turning a string (PHP source code, in this ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.