PHP Variables || Free PHP Tutorials

PHP Variables


PHP Variables is very interesting, its just like a container. PHP Variables data transfer from one place to another place.

Note: PHP Variables start with $ sign.

Basic Example:

$a= 20;
echo $a;

Result: 20

There are two types of Variables:

  • Predefined Variable
  • User define Variables

1. Predefined Variables:

These variables are available in PHP program. There is no need to declare and define these variable in the program.

These are following type of Predefined Variable.

Predefined Variables = Super Define Variables.









2. User define Variable:

This variable is declare and define by developers

For Example:


$ontime is a variable and 50 is a data and this data store in variable $num. So we can use this variable for print the value of 50 at any where as per requirement.

Benefit of PHP Variable: PHP automatically converts the variable to correct data type, depending on value.


echo "First Number is $a"."<br>";
echo "Second Number is $b"."<br>";
echo "Result is $c";


First Number is 30

Second Number is 50

Result is 80

Personal Recommendation: Check PHP Examples and start practicing.

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