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Today  i updated with some useful stuff, these are will help you to share your files freely. Below are the site check it out one by one & enjoy…!!!

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Array of HTML form elements

You can create the array of Form Elements for grouping the similar kind of object or data. The array of elements are very useful in the context where you don’t know how many similar kind of data user have to enter. For example, you have a form where user have to enter his education qualification then you might not know how many of the textboxes are required for a person and in such kind situation you can dynamically generate array of the elements in the form for entering such kind of information.
<input name=”education[]” type=”text” size=”20″ maxlength=”40″ />
<input name=”education[]” type=”text” size=”20″ maxlength=”40″ />
<input name=”education[]” type=”text” size=”20″ maxlength=”40″ />
As you can in the above code, there are array element of textbox defined with the name “education”.Now, let’s see how can we handle them via JavaScript and PHP.
How to handle array of HTML form elements using PHP

If you submit the the the form with the above the array of elements then you can assess it via array of $_POST['education'] in PHP. You can use foreach() loop to access the value of the value of these form elements via PHP.
foreach($_POST['education'] as $key=>$value)
echo $key.’ ‘.$value;

Normally, posted variable are contained within the POST array but when you post the array of Form Elements then at that time the values are contained within the array of array i.e within $_POST['education'] in above exmaple.

How to handle array of Form elements using JavaScript

Handling the array of Form element part is a bit tricky. Now, let try to access the values of the above elements using JavaScript. First, let’s store the above object in a JavaScript variable

var mutli_education = document.form_name.elements["education[]“];

After storing the object in the variable, we can access the individual variables in the following way in JavaScript

for(i=0;i<mutli_education.length;i++)
{
alert(mutli_education[i].value);
}

As you can see, you can get how many elements are there in the array using the lengh property and you can use the value property to get the value of the indivisual element.

2. Maintainability: Is the code easy to understand for other developers? Is it well planned, logical, well documented, and easy to update?

Let’s discuss the various elements comprising these two broad points regarding clean code, and example in PHP.

One way or another, all pseudo code is eventually converted to machine code. This code will occupy some finite amount of memory. Some languages, such as Java and the .NET Framework first product IL (Intermediary Language) code before producing machine code. In PHP, there are a few key ways to minimize the amount of memory and machine code overhead generated by your application. The best place to start the discussion is with loops and conditional statements.

Case Statements – A case statement produces roughly 1/5th the amount of machine code as an if/else structure that completes the same task. Use case statements whenever possible. The difference in memory overhead between these two statements is fairly nominal, but the case statement is more efficient to some small degree.

Loops – Loops vary more drastically than conditionals due to the nature of the operations they perform. PHP offers a number of loops. When deciding what type of loop to use, consider the operations taking place. Let’s look at the following example, where we have a query that will return around 2000 results.

$r = mysql_query(’SELECT * FROM tablename LIMIT 1500′);
//First option
for ($i = 0; $i &lt; mysql_num_rows($r); $i++) {
print mysql_result($r, $i, ‘Col1‘).mysql_result($r, $i, ‘Col2‘);
}

// Second option
while (($row = mysql_fetch_assoc($r)) !== false) {
print $row['Col1'].$row['Col2'];
}

The first option requires simply one scalar variable used as a counter for iteration, using a lightweight access method to read buffered data from a result handle. The second example uses an array constructor function to build an array and evaluate it’s contents on each iteration, and then references the array two times per iteration. Thebottom line is “SECOND OPTION” runs significantly faster. It has lower memory and machine code overhead.

Best Practices

It is subject to much debate and a variety of standards. Let’s start the example with single quotes (’) vs using double quotes (”). The PHP parser treats these two token identifiers very different. PHP treats anything inside a matching pair of single quotes as a string literal and does not parse the contents of that string. However, PHPtreats anything inside a matching pair of double quotes as string data and parse the contents of the string. This can result in major performance disparities in a page with extensive data output. Let’s test printing 1,000 lines of output in the following two methods:

// First Option
print “Name : $name. Address : $add. Email: $email.”;

// Second Option
print ‘Name :’.$name.’. Address : ‘.$add.’. Email ‘.$email.’.’;

Can you imagine second option run 30% faster than the first one. The big difference between these two examples is that in first option PHP is required to full parse the contents of the string. Second option is the equivalent of concatenating seven string literal values together and printing them out, which requires no actual string parsing.

Other “best practices” that are more thoroughly documented include:

* Using a consistent and logical naming convention for objects, functions, classes, etc.
* Commenting code line by line (or as near to line by line as is needed to clearly explain what operations are being performed).
* Indenting code to reflect the beginning and ending of statements (particularly statements enclosed in curly braces).
* Organizing files in a logical directory structure with easy to understand directory and file names.
* Making code as modular and reusable as possible i.e use functions if the same code is going to be used in many places.

These things may seem obvious to seasoned programmers, but for a lot of beginners, these are things that are often overlooked in haste.

PHP’s three key advantages over competing technologies:

1. Designed for the Web – PHP has built-in features to handle heavily trafficked sites and to simplify common Web programming tasks.

2. Ease of Use – Companies gain enhanced productivity of development teams and significantly reduced time-to-market of mission critical web applications.

3. Open Source – Collaborative development leads to rapid technology advancement, superior code quality, a massive library of prewritten code, and comprehensive developer support and documentation.
You can view the popularity of PHP from here – Popularity of PHP.

According to a Netcraft survey published in April 2002, PHP is now being used by over 24% of the sites on the Internet out of the 37.6 million web sites reported worldwide (http://www.netcraft.com/Survey/index-200204.html), PHP is running on over 9 million sites and continues to grow at an explosive rate. Over the past two years PHP has averaged a 6.5% monthly growth rate.

If you were a small software developer creating a web based software package for sale at a price point less than $350, which platform would you pick to maximize your potential market?

There is a network effect that drives end user demand for PHP. Each new killer app available on PHP makes the whole platform more attractive, which draws in new apps. The whole cycle will draw in more and more PHP programmers.

The Hotscripts.com Java ad management software category has 4 entries, one sponsored costing $699. Meanwhile, the PHP Ad management software category has 105 entries, three sponsored all less than $100. If you were a small site owner looking to choose a platform for your site, which do you think it would be short sighted to select?