Mypaaji

Ask Sunny: Tree + Load Url - jQuery

Sny — Tue, 01 Sep 2009 06:14:52 +0000

Some days back my dear friend nikhil(chubey sahb aka Mungeri lal) asked me “Paaji how to build a drop down like google code and load url on click”.
Its very easy we can build this within 5 minutes using jQuery.
so here it goes..

If you see any room for improvement, or if you can add something than go ahead and comment and I will definitely give it a look for possible inclusion.

Setup

Include jQuery in your html file, you can download it from here Download jQuery.

Markup

Time to write some html and css.





Tree








	
		First
		
			
				First Child
			
			
				First Second Child
			
			
				First Third Child
			
		
	
	
		Second
		
			
				Second Child
			
			
				Second Second Child
			
		
	
	
		Third
		
			
				Third Child
			
			
				Third Second Child

JQuery - The Rockstar

$(document).ready(function()
{
	$('#tree li a').click(function()
	{
		mainObj	= $(this);

		obj	= mainObj.next();
		obj.toggle('slow'); // Remove slow If you dont want any animation
		obj.find('a').click(function()
		{
			url	= $(this).attr('href'); // store href value
			$('#showPage').load(url);// loading url and showing the content in a div of id showPage
			return false;// its important 
 		})

	});
})

I know its not very well explained but what can I do, am very bad in explaining things and some times lazy too..

If you see any room for improvement, or if you can add something than go ahead and comment and I will definitely give it a look for possible inclusion.

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WWE with Suraj and Pison - Video

Sny — Fri, 28 Aug 2009 07:43:09 +0000

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Object Oriented Programming - PHP

Sny — Fri, 07 Aug 2009 13:40:11 +0000

Object - Oriented (OO) software development can be a confusing topic for developers who create primarily procedural code. But it doesn’t need to be. In this post, you’ll explore some of the basic theory behind OO and cover its (sometimes daunting) multisyllabic terminology.

What Is Object-Oriented Programming?

Object-Oriented Programming (OOP) requires a different way of thinking about how you construct your applications. Objects enable you to more closely model in code the real-world tasks, processes, and ideas that your application is designed to handle. Instead of thinking about an application as a thread of control that passes chunks of data from one function to the next, an OOP approach allows you to model the application as a set of collaborating objects that independently handle certain activities.

Understanding OOP Concepts

→ classes: the “blueprints” for an object and the actual code that defines the properties and methods.

→ objects: running instances of a class, that contains all the internal data and state information needed for your application to function.

→ inheritance: the ability to define a class of one kind as being a subtype of a different kind of class (much the same way as a square is a kind of rectangle).

→ polymorphism: allows a class to be defined as being a member of more than one category of classes (just as a car is “a thing with an engine” and “a thing with wheel”).

→ interfaces: defines a contract specifying that an object is capable of implementing a method without actually defining how it is to be done.

→ encapsulation: the ability of an object to protect access to its internal data.

Creating a Class

Start with a simple example. Save the following code in a file called class.Demo.php

Its important to have a clearly defined convention for organizing your source code file. A good rule to follow is to put each class into its own file and to name that file class.[ClassName].php

you can instantiate an object of type Demo like this

to instantiate an object, first make sure that PHP knows where to find the class declaration by including the file containing your class (class.Demo.php in this example).

Adding a Method

The Demo class isn’t particularly useful if it isn’t able to do anything, so let’s look at how you can create a method. Remember, a method of a class is basically just a function. By coding a function inside the braces of your class, you’re adding a method to that class. Here’s an example:

An object derived from your class is now capable of printing a greeting to anyone who invokes the sayHello method. To invoke the method on your $objDemo object, you need to use the operator “->” to access the newly created function:

 sayHello('Bajrangi Baba');

?>

The object is now capable of printing a friendly greeting. The “->” operator is used to access all methods the properties of your objects.

Adding a Property

Adding a property to your class is as simple as adding a method. You simply declare a variable inside the class to hold the value of the property.
Open the class.Demo.php file and do the respective changes:

name!";
    }
}

?>

The new variable, called $name, is all you have to do to create a property of the Demo class called name.
To access this property, you use the same “->” operator as that of the previous example, along with the name of the property.
Create a new file called testdemo.php and add the following:

 name = 'Pison';

$objAnotherDemo = new Demo();
$objAnotherDemo -> name = 'Bajrangi Baba';

$objDemo -> sayHello();
$objAnotherDemo -> sayHello();

?>

Save the file and open it in your Web browser. The strings “Hello Pison” and “Hello Bajrangi Baba” print to the screen.
The Keyword public is used to let the class know that you want to have access to the following variable from outside the class.

Protecting Access to Member Variables

As the previous example shows, you can set the value of the name property to just about anything you want - including an object, an array of integers, a file handle or any other nonsensical value.
To work around this problem, always implement your properties in the form of function called get[property name] and set[property name]. Such functions are known as accessor methods, and are demonstrated in the following example.

Make the changes as the following to class.Demo.php

 getName()}!";
    }

    public function getName()
   {
       return $this -> $_name;
   }

   public function setName($name)
   {
       if(!is_string($name) || strlen($name)==0)
       {
           throw new Exception("Invalid Name Value");
       }
       $this -> _name = $name;
   }
}

?>

Edit testdemo.php as shown here

 setName('Pison');
$objDemo -> sayHello();

$objDemo -> setName(69);  //would trigger an error ; )

?>

As you can see, the member access level of name has changed from public to private and has been prefixed with underscore. The underscore is a recommended naming convention to indicate private member variables and functions; however its merely a convention - PHP does not require it.

Always use accessor methods for your properties. Change to business logic and data validation requirement in the future will be much easier to implement.

Initializing Objects

For many classes you will create, you will need to do some special set-up when an object of that class is firs instantiated. You might need to fetch some information from a database, or initialize some property values, for example. By creating a special method called a constructor, Implemented in PHP using a function called __construct(), you can perform any activities required to instantiate the object. PHP will automatically call this special function when instantiating the object.
For example you could rewrite the demo class in the following way:

 _name = $name;
    }
    public function sayHello()
    {
        print "Hello $this -> _name";
    }
}

?>

You can instantiate an object like as follows:

 sayHello();

?>

That’s It guys:)

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PHP Quick Reference

Sny — Fri, 07 Aug 2009 07:06:05 +0000

This PHP Quick Reference gives a comprehensive overview of the basics of PHP, covering important subjects such as control structures, strings, arrays and sessions, and more.

For downloads and more information, please visit the official PHP site: http://www.php.net

Marking PHP Code

Sections of PHP code start with < ?php and end with ? > . An example of this syntax is:

You can also use < script language= " PHP " > to delimit your code, but the above
syntax is more convenient.

Displaying to Browser

The echo and print constructs are used to display text in a browser:

echo 'Enter text here'; // echo text

echo $variable; // echo values

echo ' 
 '; // echo HTML text

Comments

It ‘ s always a good idea to comment your code. PHP gives you two ways to do so:

// This is a single line comment that runs to the end of the line.

/* This is a multiple line comment and
can
span
multiple
lines. */

Variables

Variables are named references to locations in memory. Variable names start with $ . Legal variable
names consist of numbers, letters, and the underscore character but cannot start with a number.

$MyVariable // valid
$1stVariable // invalid (cannot start with a number)

$variable_1 // valid

//To assign a value to a variable, use the following syntax:

$variable_1 = 123;

$variable_2 = 'value';

Passing Variables

You can pass variables among pages in your Web site in three ways: through a URL, through sessions,
and through a form.

Through a URL
To pass a variable through a URL, use the following format:
http://www.example.com?variable1=value & variable2=value

Through Sessions
To pass a variable through a session, use the following PHP code:

session_start(); // starts session handling

$_SESSION['var_name1'] = value; // sets values for the entire session

$_SESSION['var_name2'] = value;

session_start() must be used in every script that sets or accesses session variables. It must be called
before any output is sent to the browser.

Through a Form
A form element’s action attribute must reference the PHP script that will parse the variables:
< form action= "process.php" >
The variables can be referenced from the $_POST and $_GET arrays, depending on the form element ‘ s
method:

$value = $_POST['varname']; // this is how you will access the values from a form with method="post"

$value = $_GET['varname']; // this is how you will access the values from a form with method="get"

Strings

A string is a set of characters delimited by quotation marks. Either single quotation marks or double
quotation marks can be used, but PHP treats these differently. Variables that appear within
double - quoted strings will be interpolated. Variables within single - quoted strings will not be.

$var = 42;
echo "The answer to life, the universe and everything is: $var." ;
// The answer to life, the universe and everything is 42.

echo 'The answer to life, the universe and everything is: $var.';
// The answer to life, the universe and everything is $var.

// \ is used to escape characters within strings:
echo '< a href= " link.php " > Don\'t Click on Me! < /a > ';

//Two strings can be joined together with the . operator:
$piece_1 = 'Hello';
$piece_2 = 'World';

echo $piece_1 . '' . $piece_2; // Hello World

if Statements

if statements are used to mark sections of code that should be executed only if a given condition is true:

if (condition)
	// execute this one statement if true;

if (true condition) {
	// execute statement 1;
	// execute statement 2;
	// execute statement 3;
}

else Statements

if / else statements branch code depending on whether a condition is true or false:

if (condition)
	//execute this statement if true;
else
	//execute this statement false;

if (condition) {
	// execute statement 1;
	// execute statement 2;
	// execute statement 3;
} else {
	// execute statement 4;
	// execute statement 5;
	// execute statement 6;
}

The ternary operator ( ?: ) is a shorthand notation for simple if / else statements:

$var = (true) ? 'value 1' : 'value 2';

is the same as:

if (true) {
	$var = 'value 1';
} else {
	$var = 'value 2';
}

Nested if Statements

if (condition A) {
	if (condition B) {
		// execute this statement if A and B are true;
	}
	else if (condition C) {
		// execute this statement if A and C are true;
	} else {
		// execute this statement if A is true and B and C are false;
	}
}

Including a File

To include PHP code from another file, use one of the following statements:

include 'header.php'; // include file header.php (PHP will continue processing even if file is not found)

include_once 'header.php'; // ensure file header.php is only included once even if attempt to include same file again later inprocessing)

require 'header.php'; // include file header.php (PHP will terminate with error if file is not found)

require_once 'header.php'; // ensure file header.php is only included once even if attempt to include same file again later

Arrays

An array is a collection of data represented by the same variable name but accessible by indexes. Indexes
can be either numeric or strings.

$name = array('first_name' = > 'Sunny', 'last_name' = > 'luthra');

echo $name['first_name'];

If no keys are required, you can set the values for an array like this and let PHP automatically assign
numeric keys starting at 0:

$flavors = array('blue raspberry', 'root beer', 'pineapple');
echo $flavor[0];

New elements can be added to an array after it is defined:

$states = array();
$states['AL'] = 'Alabama';
$states['AK'] = 'Alaska';
$states['AZ'] = 'Arizona';

Loops

PHP has numerous looping structures to repeat the execution of a block of code: while, do/while, for,
and foreach.

while
You can execute a section of code repeatedly while a given condition is true, with a while statement:

$n = 0;
while ($n < 10) {
	// these lines will execute while the value of $n is
	// less than 10
	echo $n . ' < br / > ';
	$n = $n + 1;
}
echo $n;

do/while
You can execute a section of code repeatedly while a given condition is true, with a do / while statement.
Unlike a while statement, the loop is guaranteed to run at least once because the condition is not tested
until the end of the block:

$n = 0;
do {
	// these lines will execute while the value of $n is
	// less than 10
	echo $n . ' < br / > ';
	$n = $n + 1;
} while ($n < 10);

for
You can execute a block of code a specified number of times with the for statement:

for ($n = 0; $n < 10; $n = $n + 1) {
	// this will execute while the value of $n is
	// less than 10
	echo $n . ' < br/ > ';
}

foreach
You can apply the same block of code to each value in a given array with the foreach statement:

foreach ($arrayvalue as $currentvalue) {
	// this will execute as long as there is a value in $arrayvalue
	echo $currentvalue . ' < br/ > ';
}

In addition to each value in the array, you can also identify the index or key:

foreach ($arrayvalue as $currentkey = > $currentvalue) {
	// this will execute as long as there is a value in $arrayvalue
	echo $currentkey . ':' . currentvalue . ' < br/ > ';
}

Functions

You can create and call functions using the following syntax:

function funcname() // defines the function
{
	// line of php code;
	// line of php code;
}
funcname(); // calls the function to execute

Values can be passed in and returned from functions:

function add($value1, $value2) // add two numbers together
{
	$value3 = $value1 + $value2;
	return $value3;
}
$val = funcname(1, 1); // $val = 2

Classes

You can define new objects and use its methods using the following syntax:

class ClassName() // class definition
{
	public $var1; // property with public access
	private $var2; // property with private access

	// constructor method
	public function __construct() {
		// code to initialize object goes here
	}

	// public method
	public function setFoo($value) {
		// properties and methods are accessed inside the class
		// using $this->
		$this-> var2 = $value;
	}

	// private method
	private function bar() {
		// more code goes here
	}

	// destructor method
	public function __destruct() {
		// clean up code goes here
	}
}
$c = new ClassName(); // create a new instance of the object
$c-> var1 = 42; // properties and methods are accessed using - >
$c-> setFoo('Hello World');

Namespaces

Namespaces are one of the more recent additions to PHP ‘ s syntax (added in version 5.3) and help
prevent name clashing. Namespaces can contain class, constant, and function definitions. Namespaces
are declared with the namespace keyword at the beginning of a file:

namespace MyProject\Foo\Bar;
function fizz() {
	// ...
}

When using functions and classes that are defined within a namespace, they can be referenced by their
full name:

$var = MyProject::Foo::Bar::fizz();

Namespaces can be imported with the use keyword:

use MyProject\Foo\Bar;
$var = fizz();

Namespaces can be aliased with use / as :

use MyProject\Foo\Bar as my;
$var = my\fizz();

Using MySQL

This is the basic sequence for connecting to a MySQL database, executing a SELECT query and
displaying the results:

// connect to MySQL
$db = mysql_connect('localhost', 'username', 'password') or
die ('Unable to connect. Check your connection parameters.');

// select the correct database
mysql_select_db('database', $db) or die(mysql_error($db));

// query the database
$query = 'SELECT column1, column2 FROM table ORDER BY column1 ASC';
$result = mysql_query($query, $db) or die (mysql_error($db));

// check if any rows were returned
if (mysql_num_rows($result) > 0) {
	// cycle through the returned records
	while ($row = mysql_fetch_assoc($result)) {
		echo 'column1: ' . $row['column1'] . ' < br/ > ';
		echo 'column2: ' . $row['column2'] . ' < br/ > ';
	}
}
// free the result resource
mysql_free_result($result);

// disconnect from MySQL
mysql_close($db);

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jQuery Plugin - Image Zoom In and Out

Sny — Sat, 01 Aug 2009 04:49:57 +0000

This plugin adds a functionality of zooming image in and out from mouse wheel. Its built on the mouse wheel plugin by Brandon Aaron.
If you see any room for improvement, or if you can add something than go ahead and comment and I will definitely give it a look for possible inclusion.

Setup

First include jQuery library, mouse wheel plugin by Brandon Aaron, and imageZoom. You can include Easing library if in case you need easing on zoom in and out.

Initialize imageZoom

$('#selectorId').imageZoom(
{
	minWidth:'100', //minimum width
	maxWidth:'300',// maximum width
	increaseBy:'120',//Zoom image by pixels
	duration:2000,//animation duration
	cursor:'pointer',//cursor type
	easing:'easeOutBack' //easing type
});

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PHP Functions For Daily Use

Sny — Sat, 25 Jul 2009 04:46:21 +0000

Following is a list of some of the most useful PHP functions that a PHP developer will need at any point in his career. If you see any room for improvement, or if you can add something than go ahead and comment and I will definately give it a look for possible inclusion.

Strip Slashes

Removes slashes contained in a string or in an array

/**
 * Strip Slashes
 *
 * Removes slashes contained in a string or in an array
 *
 * @param	mixed	string or array
 * @return	mixed	string or array
 */	

function strip_slashes($str)
{
	if (is_array($str))
	{
		foreach ($str as $key => $val)
		{
			$str[$key] = strip_slashes($val);
		}
	}
	else
	{
		$str = stripslashes($str);
	}

	return $str;
}

Strip Quotes

Removes single and double quotes from a string

/**
 * Strip Quotes
 *
 * Removes single and double quotes from a string
 *
 * @param	string
 * @return	string
 */	

function strip_quotes($str)
{
	return str_replace(array('"', "'"), '', $str);
}

Quotes to Entities

Converts single and double quotes to entities

/**
 * Quotes to Entities
 *
 * Converts single and double quotes to entities
 *
 * @param	string
 * @return	string
 */	

function quotes_to_entities($str)
{
	return str_replace(array("\'","\"","'",'"'), array("'",""","'","""), $str);
}

Reduce Double Slashes

Converts double slashes in a string to a single slash, except those found in http:// .

/**
 * Reduce Double Slashes
 *
 * Converts double slashes in a string to a single slash,
 * except those found in http://
 *
 * http://www.mypaaji.com//index.php
 *
 * becomes:
 *
 * http://www.mypaaji.com/index.php
 *
 * @param	string
 * @return	string
 */	

function reduce_double_slashes($str)
{
	return preg_replace("#([^:])//+#", "\\1/", $str);
}

Reduce Multiples

Reduces multiple instances of a particular character. Example: Sunny, Yuvi,, Ashwini, Sneha becomes: Sunny, Yuvi, Ashwini, Sneha

/**
 * Reduce Multiples
 *
 * Reduces multiple instances of a particular character.  Example:
 *
 * Sunny, Yuvi,, Ashwini, Sneha
 *
 * becomes:
 *
 * Sunny, Yuvi, Ashwini, Sneha
 *
 * @param	string
 * @param	string	the character you wish to reduce
 * @param	bool	TRUE/FALSE - whether to trim the character from the beginning/end
 * @return	string
 */	

function reduce_multiples($str, $character = ',', $trim = FALSE)
{
	$str = preg_replace('#'.preg_quote($character, '#').'{2,}#', $character, $str);

	if ($trim === TRUE)
	{
		$str = trim($str, $character);
	}

	return $str;
}

Create a Random String

Useful for generating passwords or hashes.

/**
 * Create a Random String
 *
 * Useful for generating passwords or hashes.
 *
 * @param	string 	type of random string.  Options: alunum, numeric, nozero, unique
 * @param	integer	number of characters
 * @return	string
 */
function random_string($type = 'alnum', $len = 
{
	switch($type)
	{
		case 'alnum'	:
		case 'numeric'	:
		case 'nozero'	:

				switch ($type)
				{
					case 'alnum'	:	$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
						break;
					case 'numeric'	:	$pool = '0123456789';
						break;
					case 'nozero'	:	$pool = '123456789';
						break;
				}

				$str = '';
				for ($i=0; $i < $len; $i++)
				{
					$str .= substr($pool, mt_rand(0, strlen($pool) -1), 1);
				}
				return $str;
		  break;
		case 'unique' : return md5(uniqid(mt_rand()));
		  break;
	}
}

Word Censoring Function

Supply a string and an array of disallowed words and any matched words will be converted to #### or to the replacement word you’ve submitted.

/**
 * Word Censoring Function
 *
 * Supply a string and an array of disallowed words and any
 * matched words will be converted to #### or to the replacement
 * word you've submitted.
 *
 * @param	string	the text string
 * @param	string	the array of censoered words
 * @param	string	the optional replacement value
 * @return	string
 */	

function word_censor($str, $censored, $replacement = '')
{
	if ( ! is_array($censored))
	{
		return $str;
	}

	$str = ' '.$str.' ';
	foreach ($censored as $badword)
	{
		if ($replacement != '')
		{
			$str = preg_replace("/\b(".str_replace('\*', '\w*?', preg_quote($badword)).")\b/i", $replacement, $str);
		}
		else
		{
			$str = preg_replace("/\b(".str_replace('\*', '\w*?', preg_quote($badword)).")\b/ie", "str_repeat('#', strlen('\\1'))", $str);
		}
	}

	return trim($str);
}

Word Limiter

Limits a string to X number of words.

/**
 * Word Limiter
 *
 * Limits a string to X number of words.
 *
 * @param	string
 * @param	integer
 * @param	string	the end character. Usually an ellipsis
 * @return	string
 */
function word_limiter($str, $limit = 100, $end_char = '…')
{
	if (trim($str) == '')
	{
		return $str;
	}

	preg_match('/^\s*+(?:\S++\s*+){1,'.(int) $limit.'}/', $str, $matches);

	if (strlen($str) == strlen($matches[0]))
	{
		$end_char = '';
	}

	return rtrim($matches[0]).$end_char;
}

Character Limiter

Limits the string based on the character count. Preserves complete words so the character count may not be exactly as specified.

/**
 * Character Limiter
 *
 * Limits the string based on the character count.  Preserves complete words
 * so the character count may not be exactly as specified.
 *
 * @param	string
 * @param	integer
 * @param	string	the end character. Usually an ellipsis
 * @return	string
 */
function character_limiter($str, $n = 500, $end_char = '…')
{
	if (strlen($str) < $n)
	{
		return $str;
	}

	$str = preg_replace("/\s+/", ' ', str_replace(array("\r\n", "\r", "\n"), ' ', $str));

	if (strlen($str) <= $n)
	{
		return $str;
	}

	$out = "";
	foreach (explode(' ', trim($str)) as $val)
	{
		$out .= $val.' ';
		if (strlen($out) >= $n)
		{
			return trim($out).$end_char;
		}
	}
}

That’s it guys I will keep updating this post with more handy functions, Please contribute if you have any.

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Creating A Facebook Application

Sny — Sun, 19 Jul 2009 20:40:19 +0000

Well today we are going to create a Quiz application for FB (ya ya already there are lots of quiz app floating on FB so why not one more)

This Tutorial is going to be very brief and point to point because I am very bad in explaining things ..

If you have any comment or ways to improve it, just leave me a comment!

What you need for that?

1) Facebook Account

2) Hosting (PHP and MySql Support needed for this demo)

Lets Start - Step 1 with Facebook

First you need to log in to the Facebook Developer application: Go to the Facebook Developer App. After following the link, click “Allow” to let the Developer application access your profile.. Then click on the Set Up New Application (Highlighted in image given below for you, yes you)

After clicking “setup new application” you will get a page asking for Application name and agree - disagree radio buttons for their terms. Give your application a nice name and agree to their terms.

Weird Application name! yes i know.

After submitting you will see a page for editing basic info of the application. everything is self explanatory I told you i am very bad in explaining (need a lady teacher.. cute one )

Your API key: this key identifies your application to Facebook. You pass it with all your API calls.

Your application secret: Facebook uses this key to authenticate the requests you make. As you can tell by its name, you should never share this key with anyone.

Click on the “Canvas” link. Your canvas page is the application area within Facebook; the name is added to the URL and will look like this: http://apps.facebook.com/[YOUR APP NAME]. The callback URL points to the server hosting the app files. Please look at the image given below (em.. I am getting polite now, wasn’t i before)

Render Method: Choose whether you will render your canvas page in an iframe or with FBML. For this APP we will be using FBML

Submit After filling all the details.

Step 2 - So Far So Good

ok lets start some PHP, create two files “index.php” , “config.php” and a folder “facebook”. Download the client libs of your choice from Facebook client libraries . For this demo I’ll be using the official PHP client.

Extract the content of the php folder(from Facebook’s official php client) in folder facebook of your application.

paste the given code in your config.php file. Do not forget to change database settings and Facebook constants i.e API , Secret etc..

Step 3 - Give Me More

Before creating Facebook quiz application lets create a simple PHP quiz first.

';
		while($quizData	= mysql_fetch_assoc($quizResult))
		{
			echo "$quizData[quiz]";
			$answerQuery	= "SELECT * FROM answers WHERE question_id='$quizData[id]'";
			$answerResult	= mysql_query($answerQuery);
			if(mysql_num_rows($answerResult) >= 1)
			{
				while($answerData = mysql_fetch_assoc($answerResult))
				{
					echo " $answerData[answer]
";
				}
			}
		}
		echo "
";
		echo '';
	}
}
elseif(isset($_POST['sny-fb-app']) && $_GET['act']=='answer')
{
	$quizIdQuery	= 'SELECT id FROM questions';
	$quizIdResult	= mysql_query($quizIdQuery);
	$rowCount		= mysql_num_rows($quizIdResult);
	if($rowCount >= 1)
	{
		while($quizIdData = mysql_fetch_assoc($quizIdResult))
		{
			$answerId	= (int)$_POST['answer-' . $quizIdData['id']];
			if(!empty($answerId))
			{
				$answerCheckQuery	= "SELECT correct FROM answers WHERE id=$answerId";
				$answerCheckResult	= mysql_query($answerCheckQuery);
				$correctAnswers	= 0;
				if(mysql_num_rows($answerCheckResult) &amp;amp;amp;gt;= 1)
				{
					$answerCheckData	= mysql_fetch_row($answerCheckResult);
					if($answerCheckData[0]==='yes')
					{
						$correctAnswers++;
					}
				}
			}
		}
		$percentage	= $correctAnswers/$rowCount * 100;
	}
	echo $percentage.'%';
}
?>;

Our Plain and Simple PHP Application

Step 4 - Rock n Roll

Yes time for Facebook API integration. Create an object for Facebook API and now you are ready to interact with it.

$fb = new Facebook(API_KEY, SECRET);

Our application can be accessed from Facebook only. Nobody can access it directly like http://yourhost.com/youFbApplication/ for that we can use require_frame() function of Facebook API.

$fb->require_frame();

require_login() function can be used to force user to login firs if not logged in already, function returns ID of the logged in user.

$userId = $fb->require_login();

ok if we want to Invite friends functionality we can use FQL and FBML(Facebook Markup Language) for that

/*Multiple Friend Invitaion*/
	$fql = 'SELECT uid FROM user WHERE uid IN (SELECT uid2 FROM friend WHERE uid1="' .
			$userId . '") AND has_added_app=1';
	$_friends = $fb->api_client->fql_query($fql);
	// Extract the user ID’s returned in the FQL request into a new array.
	$friends = array();
	if (is_array($_friends) && count($_friends))
	{
		foreach ($_friends as $friend)
		{
			$friends[] = $friend['uid'];
		}
	}
	// Convert the array of friends into a comma-delimeted string.
	$friends = implode(',', $friends);
	$content = " has played " . APP_NAME .
			" and thought it's so cool even you should try it out!\n" .
			"get_add_url() . "\" label=\"Play " . APP_NAME .
			"\"/>";
	?>

Step 5 - The Wall Story

The Wall story request feature is implemented as a popup using FBJS - the subset of javascript allowed on Facebook canvas pages. It is slightly more complex than that unfortunately - you need to create a feed template first to describe the format of the story that will appear on users newsfeeds.
Go to the template editor tool to begin. We’ll create a simple feed that shows some images and invites people to try the quiz.

http://developers.facebook.com/tools.php?feed

Create a One Line Story template

One line template code.

{*actor*} played {*app_name*} quiz.

Sample Template Data.

{ "app_name":"my Application", "quiz_result":"80%"}

Create a Short Story template

Short story template title code.

{*actor*} took the {*app_name*} quiz and got the result: {*quiz_result*}..

Skip the create action link form and register the template bundle after it go to Registered Template Console .

Step 6 - Mission Accomplished

 require_frame();
$userId	= $fb -> require_login();

if($_GET['act'] == '')
{
	$_SESSION['percentage']='';
	$quizQuery	= "SELECT * FROM questions";

	$quizResult	= mysql_query($quizQuery);
	$rowCount	= mysql_num_rows($quizResult);

	if($rowCount >= 1)
	{
		echo '';
		while($quizData	= mysql_fetch_assoc($quizResult))
		{
			echo "$quizData[quiz]";
			$answerQuery	= "SELECT * FROM answers WHERE question_id='$quizData[id]'";
			$answerResult	= mysql_query($answerQuery);
			if(mysql_num_rows($answerResult) >= 1)
			{
				while($answerData = mysql_fetch_assoc($answerResult))
				{
					echo " $answerData[answer]
";
				}
			}
		}
		echo "
";
		echo '';
	}
}
elseif(isset($_POST['sny-fb-app']) && $_GET['act']=='answer')
{
	$quizIdQuery	= 'SELECT id FROM questions';
	$quizIdResult	= mysql_query($quizIdQuery);
	$rowCount		= mysql_num_rows($quizIdResult);
	if($rowCount >= 1)
	{
		while($quizIdData = mysql_fetch_assoc($quizIdResult))
		{
			$answerId	= (int)$_POST['answer-' . $quizIdData['id']];
			if(!empty($answerId))
			{
				$answerCheckQuery	= "SELECT correct FROM answers WHERE id=$answerId ";
				$answerCheckResult	= mysql_query($answerCheckQuery);
				$correctAnswers	= 0;
				if(mysql_num_rows($answerCheckResult) >= 1)
				{
					$answerCheckData	= mysql_fetch_row($answerCheckResult);
					if($answerCheckData[0]==='yes')
					{
						$correctAnswers++;
					}
				}
			}
		}
		$percentage	= $correctAnswers/$rowCount * 100;
	}
	$_SESSION['percentage']	= $percentage;

	/*Multiple Friend Invitaion*/
	$fql = 'SELECT uid FROM user WHERE uid IN (SELECT uid2 FROM friend WHERE uid1="' .
			$userId . '") AND has_added_app=1';
	$_friends = $fb->api_client->fql_query($fql);
	// Extract the user ID’s returned in the FQL request into a new array.
	$friends = array();
	if (is_array($_friends) && count($_friends))
	{
		foreach ($_friends as $friend)
		{
			$friends[] = $friend['uid'];
		}
	}
	// Convert the array of friends into a comma-delimeted string.
	$friends = implode(',', $friends);
	$content = " has played " . APP_NAME .
			" and thought it's so cool even you should try it out!\n" .
			"get_add_url() . "\" label=\"Play " . APP_NAME .
			"\"/>";
	?>
	   
	

	Thanks For Playing

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jQuery - Weather Widget

Sny — Tue, 07 Jul 2009 00:11:34 +0000

This code fetches data from a xml provided by google APIs, it requires jQuery and very little code of PHP. Last night my friend Prabodh asked something like this in java but unfortunately i don’t know JAVA so i did it in jQuery and PHP.

If you have any comment or ways to improve it, just leave me a comment!

Write Some PHP

YUP, that’s it, you only have to do this much PHP :). Save it as google-weather.php.

XML - Returned from above php script

HTML and CSS - Whatever





Weather Widget








	
	
	Sorry No Data Found!
		
			

			City -

			Date -

			Condition -

			Temperature -

			Humidity -

jQuery - The Rockstar

var childData	= function(selector, arg)
 {
 	return selector.find(arg).attr('data');
 }
var sendAjax =function(where){$('#data, #error').stop().hide('fast');
$.ajax({
   type: "GET",
   data:"where="+where,
   url: "google-weather.php",//URL of our php page
    success: function(data){

    forecast	= $(data).find('forecast_information');
	cCondition	= $(data).find('current_conditions');

	city	= childData(forecast, 'city');
	if(city!=undefined)
	{
		date	= childData(forecast, 'forecast_date');

		condition	= childData(cCondition, 'condition');
		tempC	= childData(cCondition, 'temp_c');
		humidity	= childData(cCondition, 'humidity');
		icon	= childData(cCondition, 'icon');
		$('#city').text(city);
		$('#date').text(date);
		$('#condition').text(condition);
		$('#tempC').text(tempC+' C');
		$('#humidity').text(humidity);
		$('#icon').attr({'src':'http://www.google.com'+icon})
		$('#data').stop().show('fast');

	}
	else
	{
		$('#error').stop().show('fast');
	}

	}

 });
}
$('#submit').click(function()
{
where	= $('#place').val();
sendAjax(where);

})

That’s It :D…

I know its not very well explained but what can I do, am very bad in explaining things and some times lazy too..

If you have any comment or ways to improve it, just leave me a comment!

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jQuery Plugin - Multiple Select Transfer

Sny — Mon, 29 Jun 2009 18:25:55 +0000

This plugin adds a functionality of transferring options from one select to another. I did it because
my friend Pranny needed something like this .

If you have any comment or ways to improve it, just leave me a comment!

Setup

Nothing is easier to use. First include jQuery library, jTransfer js in the head of page(s) where you
want to use jTransfer.
you can download jquery from jQuery.com .

HTML


add &amp;amp;amp;amp;amp;raquo;

remove &amp;amp;amp;amp;amp;laquo;

Css

/*Plugin classes*/
.hidden{display:none;}
.added{color:#CCCCCC;}
/*End*/

Initialize jTransfer

To customize the settings, you need to pass the values to jTransfer, like so:

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Fair trial for kasav, no justice for Sarabjit?

Sny — Thu, 25 Jun 2009 00:25:01 +0000

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