Activity 5

Problem 1

Solution:

$st = "";
for ($i = 1; $i <= 5; $i++){
       $st .="*";
       echo $st . "<br>";
}

Output:
*
* *
* * *
* * * *
* * * * *

Problem 2

Solution:

$str = "";
for ($i = 1; $i <= 5; $i++)
       {
        $str .="*";
        echo $str . "<br>";
       }
for ($j = 5; $j >= 0; $j--)
       {
        echo $str ."<br>";
        $str = substr($str,1);
       }

Output:
*
* *
* * *
* * * *
* * * * *
* * * * *
* * * *
* * *
* *
*

Problem 3

Solution:

//Create form to accept user input and pass it to the php script
//PHP script:
$res;
$hi = $_GET['hrb'];
for ($i = 1; $i <= $hi; $i++)
       {
        $res += $i;
       }

if(isset($hi))
       {
        echo "Sum between 1 and $hi is: " . $res ;
       }
else{echo "
No inputs yet. Input range and click submit";}

Output:
Link to demo

Problem 4

Solution:

$rows=10;
$culomns=10;
echo "<table border='1'>";
for ($i = 1; $i <= $rows; $i++)
       {
        echo "<tr>";
        for($j = 1; $j <= $culomns; $j++)
        {
        echo "<td border='1'>" . $i * $j . "</td>";
        }
        echo "</tr>";
} echo "</table>";

Output:

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