The PHP code uses a switch case statement to check the value of the $user variable and echo the corresponding name. If the name doesn't match any case, it will echo a default message. A second code sample uses a switch case to check the value of $x and echo the corresponding number, or a default message if no case matches.

1. 1. if else
switchcase
<?php
$user = "john";
switch ($user) {
case 'genetic':
echo "genetic";
break;
case 'john':
echo "john";
break;
case 'smith':
echo "smith";
break;
case 'tony':
echo "tony";
break;
case 'admn':
echo "admn";
break;
default:
echo "The name doesn't match in this case";
break;
}
?>

2. 2. 1 4
10 1 , 4 10
switch…case
<?php
$x = 2;
switch ($x)
{
case 1:
echo " 1";
break;
case 4:
echo " 4";
break;
case 10:
echo " 10";
break;
default:
echo " 1 , 4 10";
}?>