PHP-Variables and Data Types | How to Use Variables in PHP | PHP Data Types

Variables and Data Types in PHP: -

To Store Different Data in a Variable.
PHP supports the Following Data Types.

• String
• (String is a sequence of Characters)
• String can be any text inside the code
• 
  
• exp : $name="Visually Teach";
• 
  
• Integer
• none decimal Numbers
• Integer formats are : 
• Decimals
• Hexadecimals
• octal
• Exp:
• $my_Age=30;
• 
  

• Float (Floating point number - also called double)
• Floating is number with decimal points / Double Numbers.
• exp: -
• $my_GPA=9.7;

• Boolean

• A Boolean represents two things : TRUE or FALSE.
  Booleans used in conditional testing.
  Exp: 

  
  

  $x = true; $y = false;

• Array: -
• To stores multiple values in one single variable
• Exp:
• $courses=array("Graphic Application","Web Application","Digital Marketing");
• 
  
• When you Print: -
• echo $courses[0] . ", " . $courses[1] . " and " . $courses[2] . "."

Array Types : -

There are three types of arrays:
Indexed arrays - Arrays with numeric index
Associative arrays - Arrays with named keys

Multidimensional arrays - Arrays containing one or more arrays

How to write Simple Program for Variable and Data Types: -

<?php

$jit="jeevanIT Computer Education";

$course="Web Development";

$fee=15000;

$adm_fee=100;

echo $jit;

echo "<br>";

echo $fee." + ".$adm_fee;

echo "=";

echo $fee+$adm_fee;

?>