Article Side

Online Article Directory!

Hello Guest! Login or Register to submit articles!

Optimum PHP Database Connectivity - the PDO Way

By James Andy Subscribe to RSS | June 25th 2012 | Views:
loading
 
  



Hypertext Processor or PHP, as it is more commonly known, has entranced the minds of developers worldwide. It is a general-purpose scripting language that can be embedded in HTML. One of the major advantages of PHP is its ability to talk with a variety of databases. This adds the much-needed interactive dimension to websites whereusers can fetch dynamic data and perform transactions. The heart of any web application is not its UI or its controller; it’s the database that stores and provides data based on the queries that are made to it. PHP, being a widely popular programming language, is adopted across the world by dedicated PHP programmers handling large-scale projects for firms providing PHP Web Development Services. If you are one the countless offshore PHP developers who have handled database interactions, and still use the traditional PHP MySQL API for database connections, then this article is precisely targeted at you.

Did you know PHP offers 3 types of APIs for database connectivity? No? Well, here’s some information on them:

MySQL – The most popular API which establishes database connectivity in the easiest of manners.

MySQLi – An ‘Improved’ version of the MySQL API.

PDO – PHP Data Objects, an API that is database agnostic and supports prepared statements, thus negating the requirement for SQL Injection.

Looking at the above points, some might say feel that MySQL seems to be the easiest way out, then why should we try anything else! Well, let us give you three reasons. Firstly, some of the commonly used MySQL API database connectivity code snippets are all set to be deprecated as they do not adhere to the best practices policy are not exactly the right learning that greenhorn developers should pick up. Second, if you need to escape user input, you need to specifically do it from the code, which can be a complex endeavor, especially if you are new to database connectivity and don’t have a clue about data sanitization. Third and the most important point; the MySQL API is inflexible which means you will come up a cropper if you decide to switch databases. Reason enough to consider PDO?

Remember the traditional way of connecting to a MySQL database:

# Connect

mysql_connect('localhost', 'username', 'password') or die('Could not connect: '. mysql_error());

Now consider the PDO technique where we create a new class instance, specify the driver, database name, username, and password:

$conn= newPDO('mysql:host=localhost;dbname=myDatabase', $username, $password);

The main advantage of this technique is that in the event of switching of databases, you can simply update the DSN. This reduces your dependency of MySQL and eliminates the absolute necessity of functions, such as mysql_connect.

But what about errors, you will ask! If the database connection is not established, how do we check the error? PDO offers 3 error mode options to deal with exceptions:

PDO::ERRMODE_SILENT

PDO::ERRMODE_WARNING

PDO::ERRMODE_EXCEPTION

The default error mode is PDO::ERRMODE_SILENT, which does not throw up any exceptions. You must remember to change the default mode to PDO::ERRMODE_EXCEPTION which throws up exceptions as soon as they occur and stops the execution of the script. You can write a simple try-catch code block to capture these exceptions. Failure to do so will require you to manually fetch these non-captured errors.

Now comes the most important part, the core function; retrieving information from the database. This can be done using two options, query and execute. The query method involves using the PDO::Quote method to manually escape data and is almost similar to the mysql_real_escape_string. A word of advice here; if you are dealing with data that a user fills in to a form, use prepared statements instead. For any other data that is not form data, the query method is ideal.

Prepared statements are used via the prepare method that use named parameters, eliminating the need for SQL injection. These statements are then executed by passing data into the named placeholders. Now we come to the part of receiving the data that is fetched by prepared statements.

The PDO API provides multiple options to interact with the result. These include:

PDO::FETCH_ASSOC – default response, returns an array

PDO::FETCH_BOTH – returns an array, indexed by both column-name, and 0-indexed

PDO::FETCH_BOUND – returns TRUE and uses PHP variable for assignment of values in the columns

PDO::FETCH_CLASS – returns a new instance of the class used

PDO::FETCH_OBJ – returns an object that contains property names associated with columns

The PDO prepare extension is especially suited to the execution on the same query multiple times, each time with separate parameters. You can easily perform the common CRUD tasks that every PHP developer handles day in and day out. But the advantage that rises above all these features, is the usage of an object or class instance for mapping query results. These inherent advantages should be proof enough for you to switch over from your old MySQL API to PDO. It will not only make your code more secure, but also streamline it to a great extent. And who can forget the coveted flexibility to switch over to any database! All of you, the PHP developer community including all offshore PHP developers, go PDO now, if you haven’t already!

We are GoodCore, a leading Offshore Software Development Company in Malaysia. Having garnered expertise in every cutting-edge web development technology that emerges in the market, we apply our skills to the conceptualization, development and deployment of clutter-breaking solutions for clients across the world. We ensure that our team of developers, programmers and consultants are on top of every new development in the technology arena and are primed to lend that advantage to your product. Over the years, we have gained the trust and credibility of many elite clients across the globe. We wish to extend the same quality of services to you. You can hire dedicated PHP developers from us who will help develop cost-effective solutions that match your requirements to the T. If you wish to develop state-of-the-art PHP solutions that are not just path-breaking, but also ROI-intensive, don’t hesitate to approach us. Our vast repertoire of talent is at your service!

Source: http://software-development-technologies.blogspot.com/

James Andy - About Author:
James Andy is technical writer and specialized in software development technologies. He has past five years experience of technical content writing, his strong area is Microsoft .net development technologies.

Share on Facebook Tweet It Stumbleupon this post This post is delicious !

Article Source:
http://www.articleside.com/software-articles/optimum-php-database-connectivity-the-pdo-way.htm

Related Software Articles Subscribe to RSS

Mobile application development – Three important steps for developers
Published by Angel on June 6th 2012 | Software
Companies that want to build robust apps through mobile application development program are keen to ...
 
E-Commerce Portals: Ask for services of a Magento Developer
Published by Terry Littrell on June 11th 2012 | Software
Continuing to set landmarks in contributing in developing e-commerce platforms, Magento Developers a...
 
Custom iPhone app development benefits businesses
Published by Terry Littrell on May 18th 2012 | Software
The article is about iPhone apps development which is a huge sector dedicated to the development of ...
 
Enroll with TESDA to provide the best computer technical support and services
Published by Carolmoore on February 28th 2012 | Computer
With a rise in the number of computer technicians, the challenge to provide the best computer techni...
 
Joomla Development - Exceptional CMS platform for website development
Published by GR Brains on November 25th 2011 | Software
We have expert professionals for Joomla development with highly experienced providing Joomla Custom ...
 
Testing is a necessary part in web development solutions that each and every developer should be able to plan well
Published by Williamsalas on June 11th 2012 | Software
Another crucial part in web development solutions is definitely testing. Testing ought to be carried...
 
Importance of a software development company in website building
Published by Jon on December 20th 2011 | Software
Whenever you go to expand your business over the web, your website would be the best recommended way...
 
The perfect web development supplier need to have a competent team of veteran software developers
Published by Josejames on June 9th 2012 | Software
When you opt for E-commerce solutions developer, it would be best to select enterprise specializing ...
 
Offshore outsourcing services in India helpful for small as well as big scale Organizations
Published by Williemcintosh on July 6th 2012 | Software
Outsourcing companies in India possess capabilities to give all-encompassing services associated wit...
 
Points to Ponder about mobile website development
Published by Angel on December 12th 2011 | Software
Mobile audiences are growing rapidly and business sales rate through mobile devices too growing. New...
 
How application development with SharePoint becomes cost effective
Published by Jon on February 15th 2012 | Software
When your work involves managing large information, delivering productivity and efficiency at once b...
 
Android app development - Points to ponder
Published by Angel on February 14th 2012 | Software
An experienced Android app development team has the potentials to build effective Android apps for v...
 
Mobile banking services and the four channels
Published by Angel on May 15th 2012 | Software
To afford convenient banking service, financial institutions introduce novel mobile banking services...
 
Technical knowledge and innovative ideas are important application development
Published by Anoop TU on May 31st 2012 | Software
Communication section have been developing very much nowadays with the dynamic telecom sector. Smar...
 
Why PHP is significant for website development?
Published by Virtueinfo Web Technologies on January 6th 2012 | Software
PHP is a programming language easy to learn. Programming language PHP is free and safe to website de...
 
Reverse Osmosis Process with the development of membranes that could be used to desalt water
Published by Jamesarmstrong2011 on July 19th 2012 | Computer
Reverse osmosis is a process whereby a pump is used to pressure water through a membrane, and away f...
 
Mobile website development – the prevailing parameters
Published by Angel on August 24th 2012 | Software
Enthusiastic developers go all out to produce great results out of mobile web development programs. ...
 
Four challenges to overcome during mobile website development
Published by Angel on January 25th 2012 | Software
Organizations offer their focal attention to build mobile sites through mobile website development p...
 
Want to develop the best programming design, then use custom programming services
Published by Coloprilreview on December 1st 2011 | Software
Web programming company makes the use of custom programming services to develop their business. Thei...
 
Offshore centers and their web development strategies changing for the good!
Published by Elan Technologies on February 20th 2012 | Software
Offshore software application development centers have helped in boosting overall IT growth in the w...