Print star with php using loops

  
You can print any shape with php like i have create a simple star shape shown below by using loops

<?php $nbsp = "*";
      $a = 100;
      $b = 0 ;
       $e = 10 ;
      for($i=0; $i<=10;$i++){ ?>
    <div ><div style = "text-align:center;width:<?php echo $a++ ;?>px;"><?php echo str_repeat($nbsp,$b++) ;?></div></div>
     <?php } ?>
<?php
           for($i=0; $i<=10;$i++){ ?>
    <div ><div style = "text-align:center;width:<?php echo $a++ ;?>px;"><?php echo str_repeat($nbsp,$e--) ;?></div></div>
     <?php } ?>