Difference between revisions of "Learning PHP (1)"
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== PHP and HTML == | == PHP and HTML == | ||
| − | PHP pages can contain HTML (and CSS, and JavaScript), which behaves the same as it does in [[static web pages]]. | + | PHP pages can contain HTML (and CSS, and JavaScript), which behaves the same as it does in [[Static web page|static web pages]]. |
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| + | In principle, a PHP could be all HTML, with no PHP code. This is not typically done, as it would defeat the purpose of PHP. | ||
== PHP code islands == | == PHP code islands == | ||
Revision as of 16:40, 29 August 2015
This article introduces PHP for the complete beginner.
Contents
Requirements
Getting started with PHP requires:
- A web server (or other computer) running the PHP interpreter.
- A text editor, to edit source code for PHP scripts.
- Text files with the .php file extension
- Knowledge of PHP
- Knowldge of HTML and CSS
Web server with PHP interpreter
Most web servers, including the widely-used Apache HTTP Server, have the PHP interpreter pre-installed.
Text editor
You can use any text editor to edit PHP files.
PHP files
PHP files have the .php extension.
PHP and HTML
PHP pages can contain HTML (and CSS, and JavaScript), which behaves the same as it does in static web pages.
In principle, a PHP could be all HTML, with no PHP code. This is not typically done, as it would defeat the purpose of PHP.
PHP code islands
PHP code islands (or code blocks) contain PHP code.
PHP code islands must not include HTML, CSS or JavaScript; using these languages inside a code island will trigger a PHP error.
You can use PHP code to generate HTML and other languages (see echo (PHP)).
You can freely mix HTML and code islands in a PHP page.
A PHP page can be all PHP -- one code island, no static HTML.
