November 2002
Beginner to intermediate
138 pages
2h 30m
English
Content preview from PHP Pocket Reference, 2nd 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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Embedding PHP in HTML
You embed PHP code into a standard HTML page. For example, here’s how you can dynamically generate the title of an HTML document:
<html><head><title><?echo $title?></title> </head>...
The <?echo $title?> portion of the document
is replaced by the contents of the $title PHP
variable. echo is a basic language statement that
you can use to output data.
There are a few different ways to embed your PHP code. As you just
saw, you can put PHP code between <? and
?> tags:
<? echo "Hello World"; ?>
This style is the most common way to embed PHP, but it is a problem
if your PHP code needs to co-exist with XML, as XML may use that
tagging style itself. If this is the case, turn off this style in the
php.ini file with the
short_open_tag directive. Another way to embed PHP
code is within <?php and
?> tags:
<?php echo "Hello World"; ?>
This style is always available and is recommended when your PHP code
needs to be portable to many different systems. Embedding PHP within
<script> tags is another style that is
always available:
<script language="php" > echo "Hello World"; </script>
One final style, in which the code is between
<% and %> tags, is
disabled by default:
<% echo "Hello World"; %>
You can turn on this style with the asp_tags
directive in your php.ini file. The style is
most useful when you are using Microsoft FrontPage or another HTML
authoring tool that prefers that tag style for HTML-embedded scripts.
You can embed multiple statements by separating them with semicolons: ...
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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.