﻿ PHP for loops Exercise: Print alphabet pattern O - w3resource

# PHP for loop Exercises: Print alphabet pattern O

## PHP for loop: Exercise-27 with Solution

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

Visual Presentation:

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 \$column == 5) and \$row != 0 and \$row != 6) or ((\$row == 0 or \$row == 6) and \$column > 1 and \$column < 5))
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 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 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 two cases:
• If the column is at index 1 or index 5, and the row is not at index 0 or index 6.
• If the row is at index 0 or index 6, and the column is between indices 1 and 4.
• 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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