How can we write PHP code?

Let’s start from basic syntax

Basic Syntax

PHP code started with syntax <?php and it ends with syntax ?>

<?php

?>

Hello World Program.

I am going to write a very simple program in PHP, this is just to show how we can write a Hello World program in PHP.

<?php  

echo “Hello World”;

?>

We can write it as

<?php  

echo ‘Hello World’;

?>

We can also write it as with print keyword.

<?php  

print ‘Hello World’;

?>

So we can say to print anything you may use all three above approaches.

The best is to use echo with single quotes

How can we write php code

<?php  

echo ‘Hello World’;

?>

Math in PHP

How can we add two digits while using PHP?

You can see below code, I added two digits and finally printed result of sum of two digits.Similary we can add multiple  digits

<?php

$digit1=5;

$digit2=3;

$sum= $digit1+ $digit2;

echo $sum;

?>

How can we subtract two digits while using PHP?

You can see below code, I subtracted two digit and finally printed result .Similary we can subtract multiple digits

<?php

$digit1=5;

$digit2=3;

$subtract = $digit1- $digit2;

echo $subtract;

?>

How can we multiple two digits while using PHP?

You can see below code, I multipleed two digit and finally printed result .Similary we can do with multiple digits

<?php

$digit1=5;

$digit2=3;

$multiple = $digit1* $digit2;

echo $multiple;

?>

How can we divide two digits while using PHP?

You can see below code, I divided two digit and finally printed result .Similary we can do for divide any digits .

<?php

$digit1=5;

$digit2=3;

$divide = $digit1/ $digit2;

echo $divide;

?>

Math Functions PHP

 Function abs()

This function is used to return the absolute value of different numbers

<?php

echo(abs(2.3) . "</br>");

echo(abs(-2.3) . "</br>");

echo(abs(1));

?>

Function acos()

This function is used to return the arc cosine of different numbers

<?php

echo(acos(2.3) . "</br>");

echo(acos(-2.3) . "</br>");

echo(acos(1));

?>