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While working with any language we make use of variables. Variables are used to store values and reuse them in our code. We

According to USFDA, a combination product is one composed of any combination of a drug and device; biological product and device; drug and biological product

use different types of variables in our code such as strings (text), integers (numbers), floats (decimal numbers), boolean (

; or drug, device, and biological product and fixed dose combination would include two or more combinations of drug.

Examples of combination products may in

true or false) and objects. In PHP we can make use of variable while writing scripts. In this lesson we're going to cover PH

lude drug-coated devices, drugs packaged with delivery devices in medical kits, and drugs and devices packaged separately but intended to be used together.

P variables.

What is a variable?

A variable is a mean to store values such as strings, integers or decimals so we c

here is enormous increase in the number of combination products entering the market in the recent years. Combination products have proven advantages but fixe

an easily reuse those values in our code. For example, we can store a string value such as "I Love PHP" or an integer value

d dose combinations are still in the process of convincing regulatory authority on their advantages over the single ingredient formulations.

Combination pro

of 100 into a variable.

PHP Variable Syntax

$var_name = value;

Defining Variable in PHP?

Here is an exampl

ucts have become life saving products for the pharmaceutical companies who doesn’t have many innovative molecules in their product pipeline and have been inc

e of how to declare a variable in PHP.

Some key points to notice:

- Remember

easingly used in the product life cycle management. Even the companies having product patents are trying to extend their product life cycle through the combi

to put the $ sign in front of variables when declaring variables in PHP.

- Variable names must start with letters or unders

nation products and maximize the revenues. But the companies involved in this practice are overlooking that they are burdening the patients both economically

core.

- Variables can’t include characters except letters, numbers or underscore.

PHP variable types?

Unlike Java

and physically. They need to rightly judge the benefits of the combination products and they have to even look at the risks involved when combining the produ

or C++, PHP doesn't care about primitive types. Any variable, either a string, an integer or a float is declared the same wa

ts. Some of the combination products were well accepted by physicians while others suffered. Companies involved in development of combination products are fi

y. PHP converts the types in the code by itself. Here's what I mean.

ding difficulty in defining their combination products and facing various challenges from selecting a combination to marketing it.

Following aspects would a

//an integer variable $var_name = 100;

//an float variable $var_name = 100.00 ?>

PHP Variable type juggling

dd to the challenges in developing combination products:

Which markets to tap where the combination products can do fairly well?
Which combination prod

Like mentioned above, PHP doesn't require variables to declared using primitive types. Therefore, juggling between two typ

cts are meaningful and rational?
Which therapeutic categories to select?
Which Combinations can address unmet needs of the patients?
Do combin

es doesn't require use of any special function. We can simply do things like...

//string var $var = "0";

//var is

tions increase the patient compliance?
What would be the developing cost?
How to tackle the risks encountered during combination product developmen

now float $var += 2.5;

//var is now integer $var += 2;

//var is now string $var .= " is the total"; echo $var;

?>

t?

As combination products don't fit into the traditional categories of drugs, medical devices, or biological products, the USFDA is in the process of devel

>Concatenating variables in PHP?

In PHP we can join two variables by using the dot '.' operator.

$var1 = "I Lov

ping new procedures for reviewing their safety, efficacy and quality.

Professional from academic institutions, pharmaceutical industries, health care indust

e PHP"; $var2 = " and Java";

//prints "I Love PHP and Java" echo $var1 . $var2;

$var1 = "1"; $var2 = "2";

//prints "12

y and representatives from various regulatory agencies are working out to design the regulatory requirements for manufacture and sale of combination products

"; echo $var1 . $var2;

?>

So there you have it, a quick and easy variable lesson in PHP. You can see more examples of

.

As there is an increasing trend of the combination products companies manufacturing such products should be able to tackle the problems involved in the de

PHP variables at http://php-learn-it.com/php_variables

elopment. They need to be wiser in analyzing the market trends and the regulatory requirements.

Companies that provide selfless information through particip

.html or go to Learn PHP for more tutorials.

Have fun coding!

tion in industry events and feedback to regulatory authorities would be able to face the challenges and will be successful in developing combination products

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