I am confused with a single for loop : Please give me the solution for this in PHP language.
*
**
***

I want to print this stars shape in php but the condition is by using single for loop, how is this possible. Please help me out.

My Code is this where I am confused here:-

    <?php
    $a="*";
    for($b=1;$b<=3;$b++)
    {
    echo "*".$a."<br/>";
    }
    echo "<br/>";
    ?>

Please help me out where I am wrong and stuck badly.