﻿ PHP for loops Exercise: Print alphabet pattern K - w3resource

# PHP for loop Exercises: Print alphabet pattern K

## PHP for loop: Exercise-23 with Solution

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

Visual Presentation:

Sample Solution:

PHP Code:

``````<?php
// Initialize variables
\$j = 5;    // Variable for controlling the second diagonal position
\$i = 0;    // Variable for controlling the first diagonal position

// 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 == \$column + 1) and \$column != 0))
echo "*";   // Print '*' if condition is met
else if (\$row == \$i and \$column == \$j)
{
echo "*";    // Print '*' if condition is met
\$i=\$i+1;  // Increment the first diagonal position
\$j=\$j-1;  // Decrement the second diagonal position
}
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.
• Two variables '\$i' and '\$j' are initialized with values 0 and 5, respectively.
• It utilizes 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 7.
• 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 are conditional statements that determine whether to print an asterisk ('*') or a space ( ) based on the position of the current row and column indices.
• The conditions check three cases:
• If the column is at index 1.
• If the difference between the row and the column is 1.
• If the row index matches the current value of '\$i' and the column index matches the current value of '\$j'.
• If any of these conditions are met, an asterisk ('*') is echoed. Otherwise, a space ( ) is echoed.
• 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 :

PHP Code Editor:

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