Variable is a container used to store data

Eg: An excel file name is a variable. It contains data

1. Define variable or variable assignment

Syntax:

                $variable_name = value;
              

1. $ sign must be in front of the variable name
2. = sign is for assigning the value to a variable

              <?php 

              $name="manoj";
              $age=20;
              $dob="20-01-2020";
              $english=50;
              $malayalam=50;
              $computer=50;
              $maths=50;
              $gk=50;

              ?>

            

2. read variables

              <?php 
              
              $name;
              $age;
              $dob;
              $english;
              $malayalam;
              $computer;
              $maths;
              $gk;

              ?>

            

3. output the variable data into browser

              <?php 
              
              echo $name;
              echo $age;
              echo $dob;
              echo $english;
              echo $malayalam;
              echo $computer;
              echo $maths;
              echo $gk;

              ?>

            

4. Change the value of a variable

              <?php 

              $name="manoj1";
              $age=20;
              $dob="20-01-2020";
              $english=50;
              $malayalam=50;
              $computer=50;
              $maths=50;
              $gk=50;

              ?>

            

5. Display the data user friendly

                <table>
                    <tr>
                        <td>Name</td>
                        <td> 
                            <?php                              
                              echo  $name; 
                            ?>
                        </td>
                  </tr>

                  <tr>
                        <td>Age</td>
                        <td> 
                            <?php                              
                              echo  $age; 
                            ?>
                        </td>
                  </tr>

                  <tr>
                        <td>DOB</td>
                        <td> 
                            <?php                              
                              echo  $dob; 
                            ?>
                        </td>
                  </tr>



                </table>