First steps in PHP

Learning project: PHP

01/2023

In mid-January 2023, I began a program to expand my qualifications. I was excited to get more familiar with programming and the Educom training started with the PHP language. This project is one of my first steps as a developer and I did it at the end of the first week of the training.

What’s the program about?
I wrote 4 different algorithms to draw a triangle formed by asterisks. In addition to the assignment, I implemented the drawing of a diamond formed by asterisks, which is actually a combination of the same algorithm but applied bi-directionally.
After the user enters a number, the program draws the shapes as the number of rows and the number of asterisks on the last row correspond to the entered number.

Try the algorythm in the browser

PHP

Source available on GitHub

Solution 1

<?php for ($i=1; $i<=$aantal_rijen; $i++) { for ($j=1; $j<=$aantal_rijen-$i; $j++) { echo "  "; } for ($k=1; $k<=$i-1; $k++) { echo "*"; } for ($p=2; $p<=$i+1; $p++) { echo "*"; } } ?>

Solution 2

<?php for ($i=0; $i<$aantal_rijen; $i++) { for($j=0; $j<$aantal_rijen*2-1; $j++) { if ($j<$aantal_rijen-$i-1 || $j>=$aantal_rijen+$i) { echo "  "; } else { echo "*"; } } } ?>

Solution 3

<?php for ($i=0; $i<$aantal_rijen; $i++) { for($j=0; $j<$aantal_rijen-$i-1; $j++) { echo "  "; } for($j=0; $j<$i*2+1; $j++) { echo "*"; } } ?>

Solution 4

<?php for ($i=0; $i<$aantal_rijen; $i++) { for($j=0; $j<$aantal_rijen+$i; $j++) { if ($j<$aantal_rijen-$i-1) { echo "  "; } else { echo "*"; } } } ?>

Collatz conjecture – PHP

Wink Wink – Dating website