PHP is a server site scripting language which executes on the server and supports many databases. To learn more about PHP, click here.
Many PHP programmers, mostly the beginners face several types of
problems, when they start PHP programming. The problem may like
installing PHP, running the PHP code, error message etc. This page will
explains some of these types of problem. The content of this page will
be based on the following topics:
- PHP Installation Tips
- PHP File Creation Tips
- Where to Loacate PHP Files
- PHP Script's Basic Starting and Ending Tips
- PHP Script's Commenting Tips
- PHP Code Line Ending Tips
- PHP Variables Tips
- PHP String Tips
To learn the tips, go through the contents.
PHP Installation Tips
If your server supports PHP you don't
need to install PHP or do anything. You just create some .php files in your web directory, and the server
will parse. However, if your server does not support PHP, you must have to install PHP.
PHP.net provides a good tutorials for installing PHP. To read the tutorial, just visit http://www.php.net/manual/en/install.php.
For
the beginners, it's quite hard to install and run PHP successfully.
There is an alternate solution. I prefer recommended this techniques.
There is one installation package which includes everything related to
PHP environment. Just visit the link
http://www.apachefriends.org/en/xampp.html
and download the desired package and install it. Now you can get the
environment to code. If you follow this techniques, you just have to
code and run the
xampp.
More Links of PHP
PHP File Creation Tips
PHP files may contain text, HTML and script blocks. But remember, PHP file has the following extensions:
You
must have to use any of the three extensions. Most new program, don't
care it and they face problems. So, remember, any types of PHP file
must be .php or .php3 or .phtml extensions.
For example, if you write a "Hellow World" program using php, then the file name may look like the followings:
Where to Loacate PHP Files
All the PHP files are resided into htdocs folder. If you successfully installed PHP, Apache server then in your installation directory, you will find a folder named as htdocs. All of your PHP files must be located in that folder.
PHP Script's Basic Starting and Ending Tips
All PHP code block starts with a <?php tag and ends with ?> tag. This is the standard tags. Some servers also support shorterhand tags (<? for starting tag and ?> for ending tag). But it's a best idea to use the standarded tag set (i.e. <?php and ?> for starting and ending tag) .
Code:
<?php
// php code block
PHP Script's Commenting Tips
Sometimes, you need to insert comment into your code. To insert comment use " // " for single line comment and for multiple lines comment use " /* " and " */ " and put the comment block in between them.
Code:
<?php
// single line comment
/*
multiple lines of comment
multiple lines of comment
*/
PHP Variables Tips
All PHP variables must starts with a $
sign. Variables are used for storing values, such as numbers, strings
or function results. New programmer very often do mistakes to put the
sing of each variables and if they do then the code may not work. After
the $ sign, the variable name located. Variable name has some naming rules:
- Variable names must be started with any letter or an underscore (" _ ")
- Variable names can contain only alpha-numeric characters (a-z, A-Z, 0-9) and underscore (" _ ")
- No space is allowed into the variable names
Example of variables:
- $a
- $my_number
- $my_string
- $x1
PHP String Tips
String is used to store and manipulate a piece of text. All the strings of PHP are located between " and ".
code:
<?php
echo "Hello World!!";
?>
All these are some of the common tips of programming with PHP. In the comment section, you can include more tips.
© Written by rancidTaste
?>
PHP Code Line Ending Tips
Each code line in PHP must be ended with a semicolon ( ;
). This semicolon is actually a separator and it is used to distinguish
one set of instructions form another sets of instructions.
The
new programmer often do mistake to put a semicolon at the end of the
code line and may find undesirable output. So, always to put semicolon
in each line code end.
Code:
<html>
<body>
<?php
echo "Hello World!!"
;
?>
</body>
</html>
?>
