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PHP for loop Exercises: Print alphabet pattern R

PHP for loop: Exercise-30 with Solution

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

Pictorial Presentation:

PHP for loop Exercises: Print alphabet pattern R

Sample Solution:

PHP Code:

<?php
for ($row=0; $row<7; $row++)
{
  for ($column=0; $column<=7; $column++)
	{
  if ($column == 1 or (($row == 0 or $row == 3) and $column > 1 and $column < 5) or ($column == 5 and $row != 0 and $row < 3) or ($column == $row - 1 and $row > 2))
            echo "*";    
        else  
            echo " ";     
	}        
  echo "\n";
}
?>

Sample Output: 

 ****                                                       
 *   *                                                      
 *   *                                                      
 ****                                                       
 * *                                                        
 *  *                                                       
 *   *

Flowchart :

Flowchart: Print alphabet pattern R

PHP Code Editor:

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Previous: Write a PHP program to print alphabet pattern 'Q'.
Next: Write a PHP program to print alphabet pattern 'S'.

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PHP: Tips of the Day

How to Sort Multi-dimensional Array by Value?

Try a usort, If you are still on PHP 5.2 or earlier, you'll have to define a sorting function first:

Example:

function sortByOrder($a, $b) {
    return $a['order'] - $b['order'];
}

usort($myArray, 'sortByOrder');

Starting in PHP 5.3, you can use an anonymous function:

usort($myArray, function($a, $b) {
    return $a['order'] - $b['order'];
});

And finally with PHP 7 you can use the spaceship operator:

usort($myArray, function($a, $b) {
    return $a['order'] <=> $b['order'];
});

To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first is zero - best explained below. You can also use this for sorting on sub-elements.

usort($myArray, function($a, $b) {
    $retval = $a['order'] <=> $b['order'];
    if ($retval == 0) {
        $retval = $a['suborder'] <=> $b['suborder'];
        if ($retval == 0) {
            $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder'];
        }
    }
    return $retval;
});

If you need to retain key associations, use uasort() - see comparison of array sorting functions in the manual

Ref : https://bit.ly/3i77vCC