Variable and PHP variable usage
Variables are the container that are used to store the information . We temporarily uses the variable container to store information.
Suppose we have basket. We put some stuff in the basket. Then later we will take the stuff directly from basket , the same process is with variable container.
In different languages there are compulsory data type with the variable is required.
E.g in C we want to store number in variable my_variable
. Then it is compulsory to write the integer datatype with variable my_variable
How ever good advantage in PHP, there is no compulsory check to write the datatype with variable. Any variable can store any type of data .
PHP Variable for storing a sentence
We are going to store a sentence into the PHP variable and then we will display this sentence into the paragraph tags
<title>PHP variable Usage </title>
$my_first_varaible = "The quick brown fox jumps over the lazy dog";
PHP Addition using variables
$var_a = 10;
$var_b = 10.5;
$sum = $var_a $var_b;
echo "Sum of two number is : ";
Output: Sum of two number is : 20.5
Here we took two variables $var_a and $var_b and insert their sum into the third variable $sum.
Then we display the result from the variable $sum.