Tuesday 30 June 2015

Why PHP for Making Dynamic Website Development?

PHP is one of the most popular site for creating Dynamic website. It offers a lot of benefits. If you are ready to add dynamic content to your webpages, consider the use of PHP Training. It's free, easy to learn and integrates well across many platforms and with various software programs. There are tons of tutorials available on the net.

Free and Capable
PHP is open source and it can be updated and developed by developers. Therefore, all its components are free to use and distribute. We can develop any type of website using PHP and it can handle with lot of traffic. Facebook, Twitter, Wikipedia and many other websites use it as their framewok. It can do anything that CGI programs because it is server-side scripting language.

Easy and Platform Independent
Syntax of PHP code is easy to understand. The developer who knows C/C++ they can easily learn PHP and code is embedded in the HTML source code. PHP provides high compatibility with leading operating systems and web servers such as thereby enabling it to be easily deployed across several different platforms. It can be run on all major operating systems like Linux, UNIX, Mac OS and Windows.

Supports All Major Web Servers and Major Databases
It supports all major web servers like Apache, Microsoft IIS, Netscape, personal webserver, iPlanet server and all major databases like MySQL, dBase, IBM DB2, InterBase, FrontBase, ODBC, PostgreSQL, SQLite, etc.

Quick Developments and secure
It uses its own memory space so that decreases the loading time and workload from the server. The processing speed is fast. PHP offers security as well that helps prevent malicious attacks. These security levels can be adjusted in the.ini file. It can develop applications like Ecommerce, CRM, CMS and Forums very fast. And It has multiple layers of security to prevent threats and malicious attacks.

Large Communities, Proven and Trusted
It has a large community of developers who regular and timely updates tutorials, documentation, online help and FAQs. It is being used since close to two decades now since its inception in 1995. It is trusted by thousands of websites and developers and the list is increasing day by day. It has also proven its capability and versatility by developing and maintaining some of the most highly visited and popular websites.

Talent Availability
You can hire PHP programmers more easily than any other language programmers since so many people know the language.

Monday 15 June 2015

Php Developement Intorduction

PHP is a scripting language designed to fill the gap between SSI (Server Side Includes) and Perl, intended for the web environment. Its principal application is the implementation of web pages having dynamic content. PHP has gained quite a following in recent times, and it is one of the frontrunners in the Open Source software movement. Its popularity derives from its C-like syntax, and its simplicity. The newest version of PHP is 5.5 and it is heavily recommended to always use the newest version for better security, performance and of course features.

If you've ever been to a website that prompts you to login, you've probably encountered a server-side scripting language. Due to its market saturation, this means you've probably come across PHP. PHP was designed by Rasmus Lerdorf to display his resume online and to collect data from his visitors.

To Know more about PHP Institute in Jaipur

Basically, PHP allows a static webpage to become dynamic. "PHP" is an acronym that stands for "PHP: Hypertext Preprocessor". The word "Preprocessor" means that PHP makes changes before the HTML page is created. This enables developers to create powerful applications which can publish a blog, remotely control hardware, or run a powerful website such as Wikipedia or Wikibooks. Of course, to accomplish something such as this, you need a database application such as MySQL.

Before you embark on the wonderful journey of Server Side Processing, it is recommended that you have a basic understanding of the HyperText Markup Language (HTML). But PHP can also be used to build GUI-driven applications for example by using PHP-GTK.

A single PHP file is like using magic on a webpage. In HTML, you have a standard page that is sent to anyone that visits your website. With PHP, you can dynamically change the page based on each individual user. Honestly, learn PHP and put it to the test. You will be extremely impressed with what an open source programming language can accomplish. I am not going to tell you that PHP is the best server side language that is out there, but it is the best for a tight budget or a beginner (Sorry, after coding with ColdFusion, I can no longer say PHP is my favorite).

What exactly does PHP do?
It can create custom content based on different variables
It is excellent at tracking user information
It can write or read information to databases, if partnered with a database language
It can run on any type of platform and server
 

Friday 12 June 2015

PHP interview questions and answers

What is PHP?

PHP: Hypertext Preprocessor is open source server-side scripting language that is widely used for web development. PHP scripts are executed on the server. PHP allows writing dynamically generated web pages efficiently and quickly. The syntax is mostly borrowed from C, Java and perl. PHP is free to download and use.

What is PEAR in php?

PEAR(PHP Extension and Application Repository) is a framework and repository for reusable PHP components. PEAR is a code repository containing all kinds of php code snippets and libraries.

PEAR also offers a command-line interface that can be used to automatically install "packages".

Explain how to submit form without a submit button.

We can achieve the above task by using JavaScript code linked to an event trigger of any form field and call the document.form.submit() function in JavaScript code.

Echo vs. print statement.

echo() and print() are language constructs in PHP, both are used to output strings. The speed of both statements is almost the same.

echo() can take multiple expressions whereas print cannot take multiple expressions.

Print return true or false based on success or failure whereas echo doesn't return true or false.

$message vs. $$message in PHP.

$message is a variable with a fixed name. $$message is a variable whose name is stored in $message.

If $message contains "var", $$message is the same as $var.

Explain the different types of errors in PHP.

Notices, Warnings and Fatal errors are the types of errors in PHP

Notices:

Notices represents non-critical errors, i.e. accessing a variable that has not yet been defined. By default, such errors are not displayed to the user at all but whenever required, you can change this default behavior.

Warnings:

Warnings are more serious errors but they do not result in script termination. i.e calling include() a file which does not exist. By default, these errors are displayed to the user.

Fatal errors:

Fatal errors are critical errors i.e. calling a non-existent function or class. These errors cause the immediate termination of the script.

Explain the importance of the function htmlentities.

The htmlentities() function converts characters to HTML entities.

What is MIME?

MIME - Multi-purpose Internet Mail Extensions.

MIME types represents a standard way of classifying file types over Internet.

Web servers and browsers have a list of MIME types, which facilitates files transfer of the same type in the same way, irrespective of operating system they are working in.

A MIME type has two parts: a type and a subtype. They are separated by a slash (/).

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