February 2013
Intermediate to advanced
538 pages
20h 55m
English
Content preview from Programming PHP, 3rd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Writing Portable Code for Windows and Unix
One of the main reasons for running PHP on Windows is to develop locally before deploying in a production environment. As many production servers are Unix-based, it is important to consider writing your applications so that they can operate on any operating platform with minimal fuss.
Potential problem areas include applications that rely on external libraries, use native file I/O and security features, access system devices, fork or spawn threads, communicate via sockets, use signals, spawn external executables, or generate platform-specific graphical user interfaces.
The good news is that cross-platform development has been a major goal in the development of PHP. For the most part, PHP scripts should be easily ported from Windows to Unix with few problems. However, there are several instances where you can run into trouble when porting your scripts. For instance, some functions that were implemented very early in the life of PHP had to be mimicked for use under Windows. Other functions may be specific to the web server under which PHP is running.
Determining the Platform
To design with portability in mind, you may want to first
test for the platform on which the script is running. PHP defines the
constant PHP_OS, which contains the
name of the operating system on which the PHP parser is executing.
Possible values for the PHP_OS
constant include "HP-UX", "Darwin" (Mac OS), "Linux", "SunOS", "WIN32", and "WINNT". You may also want to consider ...
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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.
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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.