PHP Alphabet Pattern 21

Posted in PHP Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 115 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

PHP Alphabet Pattern 21

Here`s a program that prints the above alphabet pattern using PHP Programming:

example.php

Copied

<?php
$alpha = range('A', 'Z');
for($i=1; $i<=5; $i++)
{
 for($j=1; $j<$i*2; $j++)
 {
  if($j%2 == 0) 
   echo "*";
  else
   echo $alpha[$i-1];
 }
 echo "<br>";
}
for($i=4; $i>=1; $i--)
{
 for($j=1; $j<$i*2; $j++)
 {
  if($j%2 == 0)
   echo "*" ;
  else
   echo $alpha[$i-1];
 }
 echo "<br>";
}
?>

💻 Testing the Program

When you run the above program, it will print the following output:

Output

A
B*B
C*C*C
D*D*D*D
E*E*E*E*E
D*D*D*D
C*C*C
B*B
A

🧠 How the Program Works

Let's break down the logic behind the code:

<?php - This indicates the start of PHP code.
$alpha = range('A', 'Z'); - An array named $alpha is created containing the uppercase letters of the English alphabet from 'A' to 'Z'.
for($i=1; $i<=5; $i++) - A loop that iterates from 1 to 5 (inclusive). This loop controls the number of rows in the pattern.
Inside the first loop:
1. for($j=1; $j<$i*2; $j++) - Another loop that iterates from 1 to a value dependent on the outer loop's index, creating a sequence of values for each row.
2. if($j%2 == 0) - Checks if $j is an even number.
  - If true, echo "*"; - Outputs an asterisk (*).
  - If false, echo $alpha[$i-1]; - Outputs the letter corresponding to the current value of $i from the $alpha array.
3. echo "<br>"; - Prints a line break to move to the next line after each row.
After the first loop, there is another loop:
- for($i=4; $i>=1; $i--) - A loop that iterates from 4 to 1 (inclusive). This controls the second half of the pattern with decreasing rows.
Inside the second loop (similar to the first loop):
1. for($j=1; $j<$i*2; $j++) - Loop that iterates from 1 to a value dependent on the current value of $i, creating a sequence of values for each row.
2. if($j%2 == 0) - Checks if $j is an even number.
  - If true, echo "*"; - Outputs an asterisk (*).
  - If false, echo $alpha[$i-1]; - Outputs the letter corresponding to the current value of $i from the $alpha array.
3. echo "<br>"; - Prints a line break to move to the next line after each row.
?> - This marks the end of the PHP code.

💯 Tips for Enhancement:

Explore the versatility of this pattern by adjusting its parameters. Whether you increase or decrease the size, tweak the spacing, or modify the characters used, each change opens up a world of possibilities, allowing you to customize and create your unique visual effects.

✔ Conclusion:

Creating visually appealing patterns is not only a fun endeavour but also a great way to enhance your programming or design skills. We hope this tutorial has inspired you to explore the world of creative coding. Share your creations with us, and let your imagination run wild!

🤗 Closing Call-to-Action:

We'd love to see your unique interpretations of the alphabet pattern. Share your creations in the comments below, and don't hesitate to reach out if you have any questions or suggestions for future tutorials. Happy coding!