Advanced Java and Web Technologies for JNTUK
Blog providing beginner tutorials on different web technologies like HTML, CSS, Javascript, PHP, MYSQL, XML, Java Beans, Servlets, JSP and AJAX

22/02/2014 Categories: PHP. No Comments on Variables in PHP

A variable is a named location in memory to store data temporarily. PHP is dynamically typed language. So, there is no need for mentioning the data type of a variable. The type will be detected automatically based on the value assigned to the variable. A variable can be created as shown below:

$var1 = 10;

A variable which is not assigned a value contains NULL. In expressions containing numbers, NULL will be coerced to 0 and in case of strings, NULL will be coerced to an empty string. A variable can be printed as shown below:

print(“Value of var1 is: $var1”); 

A variable can be checked if it contains a value other than NULL by using the function IsSet. This function returns TRUE if the variable contains a non-NULL value and FALSE if it contains a NULL value.

A video tutorial on declaring and using variables in PHP scripts:

Suryateja Pericherla

Suryateja Pericherla

Hello, I am Suryateja Pericherla working as an Asst. Professor in CSE department at Vishnu Institute of Technology. I write articles to share my knowledge and make people knowledgeable regarding certain topics.
Suryateja Pericherla

Latest posts by Suryateja Pericherla (see all)

Note: Do you have a question on this article or have a suggestion to make this article better? You can ask or suggest us by filling in the below form. After commenting, your comment will be held for moderation and will be published in 24-48 hrs.

Leave a Reply

Scroll Up
Thank you for visiting startertutorials.com! If you like this website do share with your friends by clicking on the social icons available on the left hand side.

As the domain name is quite large to remember, use this short domain to visit this site. Short domain: stuts.me