Why an extra number with WHILE function results?

Hello Folks,

I used a piece of code to test the square root of some numbers in a JAVA application using 'DO' 'WHILE' functions and everything worked well. So, I decided to do the same thing using PHP. I have tried both the 'WHILE' and 'DO WHILE' functions in PHP. They both work fine except that I get an extra number. Could someone have a look at my code and see what I am doing wrong, please?

Code:

---

<?php
 $i = 1;

 while($i <=5){
        echo "The square root of " .$i." is " .$i*$i ."<br/>";
        $i++;
 }
 echo $i;
 ?>

---

When I run the code above, I get the output below.

Code:

---

The square root of 1 is 1
The square root of 2 is 4
The square root of 3 is 9
The square root of 4 is 16
The square root of 5 is 25
6

---

Why do I get 6 which is an extra number added to it?

Any help will be much appreciated.

Because that is what you told the program to do.

You go through your while loop incrementing $i every iteration. When $i = 6, then your while condition is false and it exits the loop. Once you exit the loop, you've echoed $i again which, at this point, is now 6.

Hi,

Thanks for your response to my message. I got your explanations. But how do I get around this problem now? Any solution, please?

Thanks,
Menre

If you understood the explanation, you should have been able to fix the problem...

To fix it, remove this line:

Code:

---

echo $i;

---

So your code becomes

Code:

---

<?php
 $i = 1;

 while($i <=5){
        echo "The square root of " .$i." is " .$i*$i ."<br/>";
        $i++;
 }
 ?>

---

Thanks a lot.
Menre