PHP OVER ASP.NET

Both languages have powered to provide a better application. But slight advantages can hang over to PHP.

• PHP will work well in any kind of platform and server.  ASP.NET can be used only with Internet Information Server (IIS).

• Both are same but ASP.NET is more on Rapid-Application-Development and PHP is more on Coding.

• For PHP, a code written on Linux/Apache will work on Windows or any OS/Web Server. But .NET, even though we have ports available, you will require some tweaks to make it run.

• PHP is an open source technology which can be used for free. ASP.NET is a Microsoft technology that is expensive in price.

• PHP is a programming language that is used for creating web applications.  ASP.NET is a platform in which programming languages such as VB.NET or C# can be used to create ASP.NET applications.

• PHP works well with MySQL database. MySQL database is also available for free. ASP.NET mostly works with MS-SQL database, which also belongs to Microsoft and MS-SQL is not available for free.

• PHP can run in Linux Operating System which is available for free. ASP.NET needs Windows Platform which is not available for free.

• PHP execution is faster because PHP uses in-built memory space. ASP.NET code execution is comparatively slower because it will utilize the server space during execution.

• Even Notepad can be used for coding. PHP is more easy for that, but if you can afford Visual Studio, then ASP.NET.

• Both PHP & .NET parties release fixes for bugs and security issues instantly.

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Best Practices in PHP

Best practices makes your code less error, easier to maintain, and more secure….

• Don’t use the <? ?> short tag.

• Comment your code.

• Be consistent within your own code but recognize that other developers may have their own styles.

• If you are working on a project with other developers, use the style adopted by the project rather than your personal preference.

• Use extra lines to separate related blocks of code for improved readability.

• Be consistent with naming conventions and use meaningful names.

• Create the ending tag, bracket, or parenthesis when you create the beginning tag, bracket, or parenthesis.

• Leave error reporting on while developing and turn it off when your code goes into produc-tion. This enables you to locate errors, but protects the user from strange error messages.Error reporting is turned on through php.ini file.

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Basic Object Oriented(OO) Terms

Some of the basic object-oriented terms:

Class:

A class is a template for an object. A class contains the code which defines how an object will behave and interact either with each other, or with it. Every time you create an object in PHP, you are actually developing the class.

Property:

A property is a container inside the class which can retain some information. Unlike other languages, PHP doesn’t check the type of property variable. A property could be accessible only in class itself, by its subclass, or by everyone. In essence, a property is a variable which is declared inside the class itself, but not inside any function in that class.

Method:

Methods are functions inside a class. Like properties, methods can also be accessible by those three types of users.

Design Patterns:

First invented by the “Gang of Four”, design patterns are just tricks in object oriented programming to solve similar sets of problems with a smarter approach. Using design patterns (DP) can increase the performance of your whole application with minimal code written by developers. Sometimes it is not possible to design optimized solutions without using DP. But unnecessary and unplanned use of DP can also degrade the performance of your application.

Encapsulation:

Encapsulation is the mechanism that binds together code and the data it manipulates, and keeps both safe from outside interference and misuse. The wrapping up of data and methods into a single unit (called class) is known as encapsulation. The benefit of encapsulating is that it performs the task inside without . The benefit of encapsulating is that it performs the task inside without making you worry.

Polymorphism:

Objects could be of any type. A discrete object can have discrete properties and methods which work separately to other objects. However a set of objects could be derived from a parent object and retain some properties of the parent class. This process is called polymorphism. An object could be morphed into several other objects retaining some of its behaviour.

Coupling:

Coupling is the behaviour of how classes are dependent on each other. Loosely coupled architecture is much more reusable than tightly coupled objects.  Coupling is a very important concern for designing better objects.

 Inheritance:

The key process of deriving a new object by extending another object is called inheritance. When you inherit an object from another object, the subclass (which inherits) derives all the properties and methods of the superclass (which is inherited). A subclass can then process each method of superclass anyway (which is called overriding).

Types of Coding in Webdesign | Web Development

Basic web development(Coding types) might consist of:

Client side coding:

• HTML5 and CSS3
• Flash
• Java Script
• jQuery
• Microsoft Silverlight
• AJAX

Server side coding:

• PHP (open source)
• ASP (Microsoft proprietary)
• ActiveVFP (open source)
• CSP, Server-Side ANSI C
• ColdFusion (Adobe proprietary, formerly Macromedia, formerly Allaire)
• CGI
• Erlang, with Linux, Yaws, Mnesia, Erlang (LYME) solution stack
• Groovy (programming language) Grails (framework)
• Java, e.g. Java EE or WebObjects
• Lotus Domino
• Node.js
• Perl
• Python
• Real Studio Web Edition
• .NET
• Ruby, e.g. Ruby on Rails (open source)
• Smalltalk e.g. Seaside, AIDA/Web
• SSJS Server-Side JavaScript
• WebDNA (WSC proprietary)
• Websphere (IBM proprietary)

Database technology:

• MySQL
• Microsoft SQL Server
• DB2 (IBM proprietary)
• Firebird
• Apache Derby
• MySQL
• Oracle
• PostgreSQL
• SQLite
• Sybase
• Redis
• MongoDB
• CouchDB
• FileMaker
• WebDNA

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Workflow of PHP

Browser –> Server(PHP) –> Database

PHP is such a language by allowing the processing to be embedded right in the server . A PHP script can be embedded right in the Web page. It can generate HTML and images on the fly, retrieve up-to-date information from a file or database, encrypt data, remember user preferences, and so on. It executes PHP instructions and inserts the results right back into the Web page before the server sends the page back to the browser, thus making the page truly dynamic.

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Softwares Used in PHP

Software we Need

• Web Server : IIS/Apache
• PHP Engine
• Text Editor
• Web browser
• Suitable DBMS
  -Oracle
  -MySQL
  -PostgreSQL
  -MS SQL Server

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Comments in PHP

Comments are an important part of PHP coding. Although you might remember tomorrow what you were trying to do with a certain bit of code, you probably won’t remember in six months. Document what you are trying to do as you do it.

Comments are not sent on to the browser so they don’t slow down your system. If you look at the source code of a web page, the only comments you see are HTML comments, not PHP comments.

There are two main types of PHP comments.

The first type is for commenting a single line or partial line. The comment starts with a // and ends at the end of the line:

<?PHP

//this is a single line comment

?>

The second type of comment is a block comment. The block comment starts with a /* and ends with a */:

<?PHP

/* This is a multiple line
comment format*/

?>

Strengths of PHP

Some of PHP’s main competitors are Perl,Microsoft ASP.NET, Ruby (on Rails or otherwise), JavaServer Pages (JSP), and ColdFusion.
In comparison to these products, PHP has many strengths, including the following:

• Performance
• Scalability
• Interfaces to many different database systems
• Built-in libraries for many common web tasks
• Low cost
• Ease of learning and use
• Strong object-oriented support
• Portability
• Flexibility of development approach
• Availability of source code
• Availability of support and documentation

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HTML | Tags | Presentation Tags

These are just three of the ten options available to indicate how text can appear in XHTML. The full list is bold, italic, monospaced, underlined, strikethrough, teletype, larger, smaller, superscripted, and subscripted text.

<b>:

Anything that appears in a <b> element is displayed in bold.

<!DOCTYPE HTML—

<p>This is <b>Bold Text</b></p>

</html>

<i>:

The content of an <i> element is displayed in italicized text.

<!DOCTYPE HTML—

<p>This is <i>Italic Text</i></p>

</html>

<u>:

The content of a <u> element is underlined with a simple line.

<!DOCTYPE HTML—

<p> This is <u>Underlined Text</u></p>

</html>

<strike>:

The content of an <s> or <strike> element is displayed with a strikethrough, which is a thin line through the text (<s> is just the abbreviated form of <strike>.

<!DOCTYPE HTML—

<p> This is a  <strike>Strike Text </strike> or</p>

<p> This is also a <s>Strike Text</s><p>

</html>

<tt>:

The content of a <tt> element is written in mono-spaced font (like that of a teletype machine).

<!DOCTYPE HTML—

<tt>This is tt Text<tt>

</html>

<sup>:

The content of a <sup> element is written in superscript; it is displayed half a char the other characters and is also often slightly smaller than the text surrounding it.

<!DOCTYPE HTML—

<p> Today is 1 ^st January </p>

</html>

<sub>:

The content of a <sub> element is written in subscript; it is displayed half a character ‘ s height beneath the other characters and is also often slightly smaller than the text surrounding it.

<!DOCTYPE HTML—

<p> We got a solution of H₂O </p>

</html>

<big>:

The contents of this element one font size larger than the rest of the text surrounding it.

<!DOCTYPE HTML—

<p> This is the <big>Big Text</big> </p>

</html>

<small>:

This contents are displayed one font size smaller than the rest of the text surrounding it.

<!DOCTYPE HTML—

<p> This is the <small> Small Text </small> </p>

</html>

<hr />:

The < hr / > element creates a horizontal rule across the page.

<!DOCTYPE HTML—

<hr />
<P> Above & Below display the horizontal Line</P>
<hr />

</html>

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HTML | Tags | Pharse Tags

 

 

 

 

 

The following elements are not just for presentational purposes; they also describe something about their content.

<em>:

The content of an <em> element is intended to be a point of emphasis in your document, and it is usually displayed in italicized text.

<!DOCTYPE HTML—

<p>This is the <em>Emphasis Text</em> </p>

</html>

<strong>:

The <strong> element is intended to show strong emphasis for its content  stronger emphasis than the <em> element.

<!DOCTYPE HTML—

<p> This is the <strong> Strong Text </strong> </p>

</html>

<address>:

Many documents need to contain a snail – mail address, and there is a special <address> element that is used to contain addresses.

<!DOCTYPE HTML—

<address>18/25 QA,TamilNadu,India-606601</address>

</html>

<abbr>:

It indicate when you are using an abbreviated form by placing the abbreviation between opening <abbr> and closing < /abbr> tags. When possible, consider using a   title  attribute whose value is the full version of the abbreviations.

<!DOCTYPE HTML—

<p> This is <abbr title=”Padmanaban”> Padthu </abbr> Abbreviation Text</p>

</html>

<acronym>:

The <acronym> element allows you to indicate that the text between opening <acronym> and closing   </acronym> tags is an acronym.When possible, use a title attribute on opening <acronym> tags whose value is the full version of the acronym.

<!DOCTYPE HTML—

<p> This is <acronym title=”Cascadind Style Sheet”> CSS </acronym> Acronyms Text</p>

</html>

<dfn>:

The <dfn> element allows you to specify that you are introducing a special term. Its use is similar to the italicized notes in this book used to introduce important new concepts.

<!DOCTYPE HTML—

<p>PHP is embedded into <dfn> HTML </dfn> </p>

</html>

<blockquote>:

When you want to quote a passage from another source, you should use the <blockquote> element.

<!DOCTYPE HTML—

<p> PHP is a <blockquote>HyperText Preprocessor</blockquote></p>

</html>

<q>:

The <q> element is intended to be used when you want to add a quote within a sentence, rather than as an indented block on its own.

<!DOCTYPE HTML—

<p> This is a <q>Simple Text</q> </p>

</html>

<cite>:

If you are quoting a text,you can indicate the source by placing it between an opening <cite> tag and closing </cite> tag. As you would expect in a print publication,the content of the <cite> element is rendered in italicized text by default.

<!DOCTYPE HTML—

<p> This is a <cite> Cite description</cite> text</p>

</html>

<code>:

If your pages include any programming code (which is not uncommon on the Web),elements will be of particular use to you. Any code to appear on a web page should be placed inside a  <code> element.

<!DOCTYPE HTML—

<p> This is the <code> &lt;h1&gt;code element&lt;h1&gt;</code> Text</p>

</html>

<kbd>:

If, when talking about computers, you want to tell a reader to enter some text, you can use the <kbd> element to indicate what should be typed in.

<!DOCTYPE HTML—

<p> This is the kbd element<kbd> CTRL </kbd><kbd> ALT</kbd></p>

</html>

<var>:

The <var> element is another of the elements added to help programmers. It is usually used in conjunction with the < pre > and < code > elements to indicate that the content of that element is a variable that can be supplied by a user.

<!DOCTYPE HTML—

<p> <code>document.write(“<var>Text</var>”)  </code></p>

</html>

<samp>:

The <samp> element indicates sample output from a program, script, or the like. Again, it is mainly used when documenting programming concepts.

<!DOCTYPE HTML—

<p><samp> This is the Sample Text </samp></p>

</html>

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