Decision Control Statement

1. The “if” statement.
2. The “if-else” statement.
3. The “if-else if –else” statement.
4. The “switch” statement .

Php “if” Statement

Syntax

if (condition)

  {

  // statement to run

  }

Example

<?php

$username="sachin";

if($username=="sachin")

  echo "Username valid";

else

  echo "Username invalid";

?>

Php “if-else” Statement

Syntax

if (condition)
 {
  //code to be executed if condition is true;
 }
else
 {
  //code to be executed if condition is false;
 }

Example

<?php
$t=date("H");
if ($t<“20")
  {
  echo "Have a good day!";
  }
else
  {
  echo "Have a good night!";
  }
?>