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PHP for loop Exercises : Create a table with text in columns using for loops

PHP for loop: Exercise-8 with Solution

Write a PHP script that creates the following table using for loops. Add cellpadding="3px" and cellspacing="0px" to the table tag.

Sample Solution:

PHP Code:

<!DOCTYPE html>
<html>
<body>
<table align="left" border="1" cellpadding="3" cellspacing="0">
<?php
for($i=1;$i<=6;$i++)
{
echo "<tr>";
for ($j=1;$j<=5;$j++)
  {
  echo "<td>$i * $j = ".$i*$j."</td>";
  }
  echo "</tr>";
  }
?>
</table>
</body>
</html>

Sample Output: 


  
    

      1 * 1 = 1
      1 * 2 = 2
      1 * 3 = 3
      1 * 4 = 4
      1 * 5 = 5
    

    

      2 * 1 = 2
      2 * 2 = 4
      2 * 3 = 6
      2 * 4 = 8
      2 * 5 = 10
    

    

      3 * 1 = 3
      3 * 2 = 6
      3 * 3 = 9
      3 * 4 = 12
      3 * 5 = 15
    

    

      4 * 1 = 4
      4 * 2 = 8
      4 * 3 = 12
      4 * 4 = 16
      4 * 5 = 20
    

    

      5 * 1 = 5
      5 * 2 = 10
      5 * 3 = 15
      5 * 4 = 20
      5 * 5 = 25
    

    

      6 * 1 = 6
      6 * 2 = 12
      6 * 3 = 18
      6 * 4 = 24
      6 * 5 = 30

View the output in the browser

Flowchart:

Flowchart: Create a table with text in columns using for loops

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Previous: Write a program which will count the "r" characters in the text "w3resource".
Next: Write a PHP script using nested for loop that creates a chess board as shown below.

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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