PHP if..Else..Elseif

Syntax:

if (condition) {
Php code to be executed if condition is true;
}

Example:

<!DOCTYPE html>
<html>
<head>
            <title>PHP Tutorial</title>
</head>
<body>
<?php
$nos=5;
if($nos==5){
            echo "Nos is Equall to: 5";
}
?>
</body>
</html>

Output

Nos is Equall to 5

PHP if… else Statement PHP if- else statement is used to execute the condition whether it is true of false. Syntax:

if (condition) {
php code will be executed if condition is true;
} else {
phpcode will be executed if condition is false;
}

Example

<!DOCTYPE html>
<html>
<head>
            <title>PHP Tutorial</title>
</head>
<body>
<?php
$age=18;
if($age==17){
            echo "Congratulation! You are eligible for vote";
}
else{
            echo "Sorry! You are not eligible for vote";
}
?>
</body>
</html>

Output

Sorry! You are not eligible for vote

PHP if..elseif ..else Statement PHP if- elseif-else statement is used to execute one or more condition whether it is true of false.

Syntax:

if (condition) {
php code wil be executed if this condition is true;
} elseif (condition) {
php code wil be executed if this condition is true;
} else {
php code wil be executed if all conditions are false;
}

Example:

<!DOCTYPE html>
            <html>
            <head>
                        <title>PHP Tutorial</title>
            </head>
            <body>
            <?php
            $day=4;
            if($day==1){
                        echo "Today is Sunday";
            }
            elseif($day==2){
                        echo "Today is Monday";
            }
            elseif($day==3){
                        echo "Today is Tuesday";
            }
            elseif($day==4){
                        echo "Today is Wednesday";
            }


            elseif($day==5){


                        echo "Today is Thursday";
            }
            elseif($day==6){
                        echo "Today is Friday";
            }
            elseif($day==7){
                        echo "Today is Saturday";
            }
            else{
                        echo"Invalid Day !";
            }
            ?>
            </body>
            </html>

Output

Today is Wednesday