PHP

Are you looking to make a career in PHP or want to learn fundamentals or in-depth of PHP, then you have landed at right place. In my counseling career I have came various clients who want to learn PHP but are confused as to where from start. So through this write up, I would like to clarify this question. Here I have tried to render the eligibility criteria depending upon varied requirements of PHP.

First of all I would like to clarify what is PHP. PHP is the popular open source server-side scripting language widely used for producing web pages. If we put it simply,” PHP language is for controlling the backend administration of a website.” In-fact various open source applications like Drupal, Joomla, Wordpress, Os Commerce, Magento and so on are developed in PHP MySQL itself.

If you want to know about the themes and extensions installation in Magento then you must know about ‘3C’s. These are Core, Community, and Commercial. There are 3 types of extensions and themes:

1. Core Themes & Extensions
   Free Themes & Extensions by Magento only
2. Community Themes & Extensions
   Free Themes & Extensions by community
3. Commercial Themes & Extensions
   Paid Themes & Extensions by third party developers

To know installation of Themes and Extensions in Magento is very important if you are working in it. The best thing about installing themes and extensions in Magento is that the procedure is very similar and you don’t have to do a lot of work because it is done automatically for you.

Real learning starts after installation; when you want to enable and use any of the installed Theme or Extension in Magento.

I am sure you have learnt about PHP Filters in your PHP course. PHP filters are very useful in dealing with data security and data management. Data security and data management is a major concern in all PHP applications. Data management refers to the handling of data and maintaining it for use and processing of the application in PHP. Data for an application in PHP programs can have two sources, one could be the internal organization which runs the application and the other could be the external data. The data from the internal organization is easy to handle as it is pre-organized in the required formats. The main challenge faced while working with the external data. The external data could include the data from the user input, cookies, web services, server variables and database query results.

File system in PHP, as the words suggests, it is the system to manage the files of the server. To understand the details of the process of file system in PHP completely, we first need to clear our concepts as to what exactly is a file. A file may be a text document (notepad, word, etc), an image, a spreadsheet or anything similar. Proper management and functioning of the files is very essential for a good application to work smoothly.

A loop is a construct that causes a block of code to be repeated a certain number of times. The repetition continues while the condition set for the loop remains true, once the condition becomes false, the loop ends and the control is passed to the statement following the loop.
Three main looping constructs in PHP are:

1. while loop
2. do while loop
3. for loop
4. foreach

The while Loop in PHP

While loops are the simplest type of loop in PHP.The while loop continues until the evaluating condition become false. The evaluating condition has to be a logical expression and must return either a true or false value. The variable that has been checked in the Boolean expression is called the loop control variable.