How to restart Apache server in CentOS?
It’s simple just right click on desktop, click on Open terminal
and type
service httpd restart
Rizwan Abbasi
How to restart Apache server in CentOS?
It’s simple just right click on desktop, click on Open terminal
and type
service httpd restart
Rizwan Abbasi
How to open/edit a text file in CentOS?
it’s simple
gedit filepath
e,g,
gedit /etc/php.ini
An editor will be opened and you can edit your php.ini file.
Rizwan Abbasi
How to install binary files in Linux? It’s simple dude,
I have downloaded a file GoogleEarthLinux.bin, now
rightclick on GoogleEarthLinux.bin and click on properties,
click on permissions and in the Execute there will e a checkbox
“Allow executing file as program” just tick it.
Double click on GoogleEarthLinux.bin , a popup will appear and just select
Run in Terminal.
Follow the instruction and you are done.
Rizwan Abbasi
Do you want to see the magic with http://www.youtube.com?
open your favourit browser and enter http://www.youtube.com/
click on your favourite video now, I liked the Heroes video, i have the following address from the address bar.
just add &flip=1 at the end. i.e,
and text and video will be flipped.
It’s great naa, you must try it.
Rizwan Abbasi
You can prepare yourself for XHTML by starting to write strict HTML.
XHTML is the next generation of HTML, but it will of course take some time before browsers and other software products are ready for it.
In the meantime there are some important things you can do to prepare yourself for it. As you will learn from this tutorial, XHTML is not very different from HTML 4.01, so bringing your code up to 4.01 standards is a very good start. Our complete HTML 4.01 reference can help you with that.
In addition, you should start NOW to write your HTML code in lowercase letters, and NEVER make the bad habit of skipping end tags like the </p>.
Happy coding!
In HTML some elements can be improperly nested within each other like this:
<b><i>This text is bold and italic</b></i> |
In XHTML all elements must be properly nested within each other like this:
<b><i>This text is bold and italic</i></b> |
Note: A common mistake in nested lists, is to forget that the inside list must be within a li element, like this:
<ul> <li>Coffee</li> <li>Tea <ul> <li>Black tea</li> <li>Green tea</li> </ul> <li>Milk</li> </ul> |
This is correct:
<ul> <li>Coffee</li> <li>Tea <ul> <li>Black tea</li> <li>Green tea</li> </ul> </li> <li>Milk</li> </ul> |
Notice that we have inserted a </li> tag after the </ul> tag in the "correct" code example.
All XHTML elements must be nested within the <html> root element. All other elements can have sub (children) elements. Sub elements must be in pairs and correctly nested within their parent element. The basic document structure is:
<html> <head> ... </head> <body> ... </body> </html> |
This is because XHTML documents are XML applications. XML is case-sensitive. Tags like <br> and <BR> are interpreted as different tags.
This is wrong:
<BODY> <P>This is a paragraph</P> </BODY> |
This is correct:
<body> <p>This is a paragraph</p> </body> |
Non-empty elements must have an end tag.
This is wrong:
<p>This is a paragraph <p>This is another paragraph |
This is correct:
<p>This is a paragraph</p> <p>This is another paragraph</p> |
Empty elements must either have an end tag or the start tag must end with />.
This is wrong:
This is a break<br> Here comes a horizontal rule:<hr> Here's an image <img src="happy.gif" alt="Happy face"> |
This is correct:
This is a break<br /> Here comes a horizontal rule:<hr /> Here's an image <img src="happy.gif" alt="Happy face" /> |
IMPORTANT Compatibility Note:
To make your XHTML compatible with today’s browsers, you should add an extra space before the "/" symbol like this: <br />, and this: <hr />.
You can prepare yourself for XHTML by starting to write strict HTML.
How To Get Ready For XHTML
XHTML is the next generation of HTML, but it will of course take some time before browsers and other software products are ready for it.
In the meantime there are some important things you can do to prepare yourself for it. As you will learn from this tutorial, XHTML is not very different from HTML 4.01, so bringing your code up to 4.01 standards is a very good start. Our complete HTML 4.01 reference can help you with that.
In addition, you should start NOW to write your HTML code in lowercase letters, and NEVER make the bad habit of skipping end tags like the
.
Happy coding!
The Most Important Differences:
• XHTML elements must be properly nested
• XHTML documents must be well-formed
• Tag names must be in lowercase
• All XHTML elements must be closed
Elements Must Be Properly Nested
In HTML some elements can be improperly nested within each other like this:
This text is bold and italic
In XHTML all elements must be properly nested within each other like this:
This text is bold and italic
Note: A common mistake in nested lists, is to forget that the inside list must be within a li element, like this:
This is correct:
Notice that we have inserted a
tag after the
tag in the "correct” code example.
Documents Must Be Well-formed
All XHTML elements must be nested within the root element. All other elements can have sub (children) elements. Sub elements must be in pairs and correctly nested within their parent element. The basic document structure is:
…
…
Tag Names Must Be In Lower Case
This is because XHTML documents are XML applications. XML is case-sensitive. Tags like
and
are interpreted as different tags.
This is wrong:
This is a paragraph
This is correct:
This is a paragraph
All XHTML Elements Must Be Closed
Non-empty elements must have an end tag.
This is wrong:
This is a paragraph
This is another paragraph
This is correct:
This is a paragraph
This is another paragraph
Empty Elements Must Also Be Closed
Empty elements must either have an end tag or the start tag must end with />.
This is wrong:
This is a break
Here comes a horizontal rule:
Here’s an image
This is correct:
This is a break
Here comes a horizontal rule:
Here’s an image
IMPORTANT Compatibility Note:
To make your XHTML compatible with today’s browsers, you should add an extra space before the "/” symbol like this:
, and this:
.
i am sharing the site of my native town with u.
Beginning ASP is pretty easy. ASP is a kool language for creating dynamic webpages.
You cannot view the PHP source code by selecting "View source” in the browser – you will only see the output from the PHP file, which is plain HTML. This is because the scripts are executed on the server before the result is sent back to the browser.
A PHP file normally contains HTML tags, just like an HTML file, and some PHP scripting code.
Below, we have an example of a simple PHP script which sends the text "Hello World” to the browser:
|
A PHP scripting block always starts with and ends with ?>. A PHP scripting block can be placed anywhere in the document.
Each code line in PHP must end with a semicolon. The semicolon is a separator and is used to distinguish one set of instructions from another.
There are two basic statements to output text with PHP: echo and print. In the example above we have used the echo statement to output the text "Hello World”.
All variables in PHP start with a $ sign symbol. Variables may contain strings, numbers, or arrays.
Below, the PHP script assigns the string "Hello World” to a variable called $txt:
$txt="Hello World";echo $txt;?> |
To concatenate two or more variables together, use the dot (.) operator:
$txt1="Hello World";$txt2="1234";echo $txt1 . " " . $txt2 ;?> |
The output of the script above will be: "Hello World 1234”.
In PHP, we use // to make a single-line comment or /* and */ to make a large comment block.
//This is a comment/*This isa commentblock*/?> |
This tutorial will not explain how to install PHP, MySQL, or Apache Server.
If your server supports PHP – you don’t need to do anything! You do not need to compile anything or install any extra tools – just create some .php files in your web directory – and the server will parse them for you. Most web hosts offer PHP support.
However, if your server does not support PHP, you must install PHP. Below is a link to a good tutorial from Webmonkey on how to install PHP4:
http://hotwired.lycos.com/webmonkey/00/44/index4a.html?tw=programming
Download PHP for free here: http://www.php.net/downloads.php
Download MySQL for free here: http://www.mysql.com/downloads/index.html
Download Apache for free here: http://httpd.apache.org/download.cgi
Rizwan Abbasi’s Blog.