PHP for loop Exercises: Print alphabet pattern D

Last update on May 31 2025 12:57:02 (UTC/GMT +8 hours)

16. Alphabet Pattern 'D'

Write a PHP program to print alphabet pattern 'D'.

Visual Presentation:

PHP for loop Exercises: Print alphabet pattern D

Sample Solution:

PHP Code:

 <?php
// Loop for rows
for ($row=0; $row<7; $row++)
{
    // Loop for columns
    for ($column=0; $column<=7; $column++)
    {
        // Condition to determine whether to print '*' or ' '
        if ($column == 1 or (($row == 0 or $row == 6) and ($column > 1 and $column < 5)) or ($column == 5 and $row != 0 and $row != 6))
            echo "*";    // Print '*' if condition is met
        else  
            echo " ";    // Print ' ' if condition is not met
    }        
    echo "\n";  // Move to the next line after each row is printed
}
?>

Output:

Explanation:

In the exercise above,

The code starts with a PHP opening tag <?php.
It uses a nested loop structure to iterate over rows and columns to create a specific pattern.
The outer loop (for ($row=0; $row<7; $row++)) controls the rows of the pattern, iterating from 0 to 6.
Inside the outer loop, there's another loop (for ($column=0; $column<=7; $column++)) that controls the columns, iterating from 0 to 7.
Within the inner loop, there's a conditional statement that determines whether to print an asterisk ('*') or a space ( ) based on the position of the current row and column indices.
The condition checks multiple conditions:

If the column is at index 1.
If the row is at index 0 or 6 and the column is between indices 2 and 4 (inclusive).
If the column is at index 5 and the row is not at indices 0 or 6.

If any of these conditions are met, an asterisk ('*') is echoed out. Otherwise, a space ( ) is echoed out.
After printing each row, the code moves to the next line by echoing a newline character (\n).
Once all rows and columns are printed according to the pattern, the PHP code ends with a closing PHP tag ?>.

Flowchart :

For more Practice: Solve these Related Problems:

Write a PHP script to create a letter 'D' pattern using for loops, ensuring rounded edges with proper spacing.
Write a PHP function to generate a scalable 'D' pattern that varies with input height and width.
Write a PHP program to print a 'D' pattern with defined left and right boundaries and a curved edge using stars.
Write a PHP script to output a letter 'D' with a thick vertical bar on the left and a semi-circular shape on the right.

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PHP Code Editor:

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