May 2003
Intermediate to advanced
592 pages
14h 28m
English
Content preview from PHP and MySQL for Dynamic Web Sites: Visual QuickPro Guide
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Single vs. Double Quotation Marks
In PHP it’s important to understand how single quotation marks differ from double quotation marks. With the echo() and print() statements you can use either, as in the examples in this chapter. But there is a specific difference between the two and why you might use them. So far I’ve told you when you would use which, but now it’s time to establish the pattern more explicitly.
In PHP, values enclosed within single quotation marks will be treated literally, whereas those within double quotation marks will be interpolated. In other words, placing variables and special characters (Table 1.2) within double quotes will have their represented values printed, not their literal values. For example, assume that you have ...
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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.