Click here to Skip to main content
15,615,155 members
Please Sign up or sign in to vote.
0.00/5 (No votes)
See more:
Hi guys I was making this pattern PHP language and I wasn’t succesfull needed some help hope you guys can help me with my current code to achieve my target output which is shown below images I posted.

<a href=""></a>[<a href="" target="_blank" title="New Window">^</a>]

What I have tried:

<pre>here is my current code:


for ($i = 1; $i <= 5; $i++) {

for ($j = $i; $j <= 5; $j++)

echo $j . '     ';

for ($k = $i; $k > 1; $k--)

echo $k - 1 . '     ';;

echo "<br>";


Updated 9-Aug-22 0:34am

Getting it to run at all does not mean your code is right! :laugh:
Think of the development process as writing an email: compiling successfully means that you wrote the email in the right language - English, rather than German for example - not that the email contained the message you wanted to send.

So now you enter the second stage of development (in reality it's the fourth or fifth, but you'll come to the earlier stages later): Testing and Debugging.

Start by looking at what it does do, and how that differs from what you wanted. This is important, because it give you information as to why it's doing it. For example, if a program is intended to let the user enter a number and it doubles it and prints the answer, then if the input / output was like this:
Input   Expected output    Actual output
  1            2                 1
  2            4                 4
  3            6                 9
  4            8                16
Then it's fairly obvious that the problem is with the bit which doubles it - it's not adding itself to itself, or multiplying it by 2, it's multiplying it by itself and returning the square of the input.
So with that, you can look at the code and it's obvious that it's somewhere here:
int Double(int value)
   return value * value;

Once you have an idea what might be going wrong, start using the debugger to find out why. Put a breakpoint on the first line of the method, and run your app. When it reaches the breakpoint, the debugger will stop, and hand control over to you. You can now run your code line-by-line (called "single stepping") and look at (or even change) variable contents as necessary (heck, you can even change the code and try again if you need to).
Think about what each line in the code should do before you execute it, and compare that to what it actually did when you use the "Step over" button to execute each line in turn. Did it do what you expect? If so, move on to the next line.
If not, why not? How does it differ?
Hopefully, that should help you locate which part of that code has a problem, and what the problem is.
This is a skill, and it's one which is well worth developing as it helps you in the real world as well as in development. And like all skills, it only improves by use!
Share this answer
The pattern is a fairly simple one. There are five columns which are printed in reverse order. Column 5 is the key value and counts from 1 to 6 in the six rows. Each of the other columns id the value of the column following multiplied by the row number plus one. So the columns in the first row will be:
Column 1   Column 2   Column 3   Column 4   Column 5
2 * col2   2 * col3   2 * col4   2 * col5      1

So now all you need to do is the calculations and printing the values in the correct order. A PHP array would probably be useful.
Share this answer
RF Tools 9-Aug-22 7:32am    
hello richard thank you for the solution It might be a big help if you can correct my code and can achieve the correct output im having hard time solving array much appreciated.
Richard MacCutchan 9-Aug-22 10:56am    
Sorry, you need to write the code first. Remember this is your assignment; we are just here to help when things go wrong.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CodeProject, 20 Bay Street, 11th Floor Toronto, Ontario, Canada M5J 2N8 +1 (416) 849-8900