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PHP for loop Exercises: Create a table using for loop

PHP for loop: Exercise-10 with Solution

Write a PHP script that creates the following table (use for loops).

1 2 3 4 5 6 7 8 9 10
2 4 6 8 10 12 14 16 18 20
3 6 9 12 15 18 21 24 27 30
4 8 12 16 20 24 28 32 36 40
5 10 15 20 25 30 35 40 45 50
6 12 18 24 30 36 42 48 54 60
7 14 21 28 35 42 49 56 63 70
8 16 24 32 40 48 56 64 72 80
9 18 27 36 45 54 63 72 81 90
10 20 30 40 50 60 70 80 90 100

Sample Solution:

PHP Code:

<?php
// Start the HTML table with border attribute and collapsed borders style
echo "<table border =\"1\" style='border-collapse: collapse'>";

// Loop through rows
for ($row=1; $row <= 10; $row++) { 
    echo "<tr> \n"; // Start a new table row
    
    // Loop through columns
    for ($col=1; $col <= 10; $col++) { 
        // Calculate the product of column and row
        $p = $col * $row;
        
        // Print the product in a table cell
        echo "<td>$p</td> \n";
    }
    
    echo "</tr>"; // End the table row
}

// Close the HTML table
echo "</table>";

?>

Output:

View the output in the browser

Explanation:

In the exercise above,

  • PHP code begins with PHP tag <?php.
  • It starts by echoing out the start of an HTML table (<table>) with a border attribute set to "1" and a collapsed border style.
  • It then enters a nested loop structure:
    • The outer loop (for ($row=1; $row <= 10; $row++)) controls the rows of the table, iterating from 1 to 10.
    • Inside the outer loop, an inner loop (for ($col=1; $col <= 10; $col++)) controls the columns of each row, iterating from 1 to 10.
  • Within the inner loop, the product of the current row and column indices ($col * $row) is calculated and stored in the variable '$p'.
  • The product value '$p' is then echoed out within a table cell (<td>) in the HTML table.
  • After completing each row, the code echoes out </tr> to close the table row (<tr>).
  • Once all rows and columns are populated with the products, the PHP code closes the HTML table with </table>.
  • Finally, the PHP code ends with a closing PHP tag ?>.

Flowchart:

Flowchart: Create a table using for loop

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Previous: Write a PHP script using nested for loop that creates a chess board as shown below.
Next: Write a PHP program which iterates the integers from 1 to 100. For multiples of three print "Fizz" instead of the number and for the multiples of five print "Buzz". For numbers which are multiples of both three and five print "FizzBuzz".

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