Laboratory work

Republic of Uzbekistan
Ministry of Higher and Secondary Special Education
Samarkand State University
Faculty of International Educational Programs
Department of Computer Science and
Programming Technologies
LABORATORY WORK
on the subject of Introduction to Computer Science.
Theme : PHP
– Operators, If…Else…Elseif, Switch


Checked by: Eshtemirov Bunyod


Done by: Rustamov Ramziddin

Plan!

1. 
   Introducing PHP Operators ,
   
2. 
   PHP if …..else …Elseif,
   
3. 
   PHP switch! .
   

Introducing PHP Operators ,

Adding two numbers .!

$x = 10;
$y = 6;

echo $x + $y;

?>
Subtraction:
$x = 10;
$y = 6;
echo $x - $y; //
?>
Multiplication:
$x = 10;
$y = 6;

echo $x * $y;//result 60

?>


Division:
$x = 60;
$y = 6;

echo $x / $y; //result 10

?>


Modulus:


Remainder of $x divided by $y
$x = 10;
$y = 6;

echo $x % $y;//result 4

?>


Exponentiation:
Result of raising $x to the $y'th power!
$x = 10;
$y = 3;
echo $x ** $y;//relut 1000
?>
PHP if …..else …Elseif
$t = date("H");

if ($t < "20") {

echo "Have a good day!";
}
?>
Output "Have a good day!" if the current time is less than 20, and "Have a good night!" otherwise:
$t = date("H");
if ($t < "20") {
echo "Have a good day!";
} else {echo "Have a good night!";
}
?>
Output "Have a good morning!" if the current time is less than 10, and "Have a good day!" if the current time is less than 20. Otherwise it will output "Have a good night!":
Code:
$t = date("H");
if ($t < "10") {echo "Have a good morning!";
} elseif ($t < "20") {
echo "Have a good day!";
} else {
echo "Have a good night!";
}
?>
PHP switch
Use the switch statement to select one of many blocks of code to be executed.
$favcolor = "red";

switch ($favcolor) {

case "red":
echo "Your favorite color is red!";
break;
case "blue":
echo "Your favorite color is blue!";
break;
case "green":
echo "Your favorite color is green!";
break;
default:
echo "Your favorite color is neither red, blue, nor green!";//your favority color //is red
}
?>