If, else and elseif

Name: If, else and elseif
Rating: 3 (1 reviews)
Author: DanielXP

In this tutorial you will learn how to use the following in PHP.

if
else
elseif

if

PHP Code

<?
$myname = "DanielXP";
if($myname == "DanielXP") {
    echo "Your cool!";
}
?>

"$myname" is the variable, I have set this as "DanielXP".
Line 3 is the if line, This gets the variable "$myname" and checks to see if it equals the other variable what i have also set as "DanielXP".

Notice: I have used two = signs in the if. If you don't use two then it would set the variable not check it.
As "DanielXP" & "DanielXP" are both the same, this script will output..

Your cool

else

Now lets have a look at the else.

PHP Code

<?
$number1 = 1;
$number2 = 2;
if($number1 === $number2) {
    echo "Weird, number 1 is the same as number 2!";
} else {
    echo "Number 1 does not equal number 2.";
}
?>

In this i have set to variables called "$number1" & "$number2" I have set each with a number.
The 4th line of the code is a if like i have explained above it checks to see if 1 equals 2, which it don't so we will move onto the else.

Output

Number 1 does not equal number 2.

elseif

Now last of all we can move onto the elseif.

PHP Code

<?
$number1 = 1;
$number2 = 2;
if($number1 === $number2) {
    echo "Weird, number 1 is the same as number 2!";
} else if($number1 === 1){
    echo "1 is the same as 1!";
}
?>

Same as above it checks the "$number1" & "$number2" variables, As 1 does not equal 2 it will move onto the second part which is the other if. As "$number1" is set as 1 this script will display...

1 is the same as 1!

Thats it for now i hope i have explained this.

Author:

DanielXP

Views:

2,678

Rating:

Posted on Friday 4^th April 2008 at 05:57 PM

Dalez

Thanks for this, as it has helped me alot!

Posted on Wednesday 21^st March 2007 at 06:42 AM

paradox

i thought with elseif your suposed to end it with an else. thats what a friend told me whos been codin awhile and its what iv been doin. corret me if im wrong please.