Lesson 3- if-else statement in PHP

Use of If-else Statement

In the earlier example we calculated the hra and gross salary.

Suppose there is a policy of company that if salary is greater than 10000 then hra will be 5% of salary but if salary is less than 10000 then hra will be 10%

In this situation we will use if-else statement.

Syntax of if-else:-

If (condition)

{

          Logic when condition true

}

Else

{

          Logic when condition false

}

For Example:-

Now implement this example

<?php

$sal=12000;

$hra;

$gross_sal;

if($sal>10000)

{

$hra=($sal*5)/100;

$gross_sal=$sal+$hra;

}

else

{

$hra=($sal*10)/100;

$gross_sal=$sal+$hra;

}

echo " The Gross Salary is $gross_sal";

?>

In this example we take salary is 12000. Which is greater than 10000. Then it will go in if block and calculate the hra 5%.

The output of this code as follows:-

Figure 1

Now move to the else-if condition.

Now take the same example in another way.  If salary is greater than 10000 then hra will be 5% and if less than hra will be 10%. But if salary is 10000 then hra will be 8%.

Now implement this example:-

<?php

$sal=10000;

$hra;

$gross_sal;

if($sal==10000)

{

$hra=($sal*8)/100;

$gross_sal=$sal+$hra;

}

else if($sal>10000)

{

$hra=($sal*5)/100;

$gross_sal=$sal+$hra;

}

else

{

$hra=($sal*5)/100;

$gross_sal=$sal+$hra;

}

echo " The Gross Salary is $gross_sal";

?>

The output of this code as follows:-

Figure 2

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