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PHP Enhancing a Simple PHP Application Paginating a List: Model and View Introducing While Loops

li guopeng
li guopeng
8,873 Points
Posted by li guopeng
li guopeng
8,873 Points

code challenge

Write a while loop to display the numbers 1 through 9, all on one line with no spaces: 123456789. (You will need a counter variable to keep track of the number of times the while loop has executed; name that variable $i.) Bummer! The output should contain only numbers 1 through 9, without any spaces or punctuation.

while.php 
<?php
$i= 0;
while ( $i < 9 )
{
  $i+=1;
  echo $i;  
}
?>
Joe Cochran
Joe Cochran
18,249 Points

Try refreshing the page and entering that again. When I input your code it correctly completes the challenge.

3 Answers

Flamur Beqiri
Flamur Beqiri
6,908 Points
Flamur Beqiri
Flamur Beqiri
6,908 Points

Ok it seems that this is a work-space problem from TeamTreeHouse , forget my answers what i posted and know that your code is right ;)

Flamur Beqiri
Flamur Beqiri
6,908 Points
Flamur Beqiri
Flamur Beqiri
6,908 Points

if you write $i<9 it will only get the 8 not the 9, because the 9 is not <than 9 , with equal it will get also the 9 because the 9 is <= 9

Joe Cochran
Joe Cochran
18,249 Points

But $i <= 9 will output 1-10, and the quiz is asking for 1-9. If I take their original code and run it through php, I get the output 123456789.

Also, I copied their code directly into the challenge and it passed, so I am pretty sure they hit some sort of Javascript problem with the challenge engine. Please see this screenshot:

https://www.dropbox.com/s/9p5n7w41v4yzfj6/challenge-screen.png?dl=0

Flamur Beqiri
Flamur Beqiri
6,908 Points
Flamur Beqiri
Flamur Beqiri
6,908 Points 
$i= 0;
while ( $i <= 9 )
{
  $i+=1;
  echo $i;  
}
?>```
this should work
William Li
William Li
Courses Plus Student 26,868 Points
William Li
William Li
Courses Plus Student 26,868 Points

Hi, Flamur Beqiri can you please also add a little explanation on why your code solves the problem where questioner's code failed? That'd help others understand the problem better.