Write a PHP program to print alphabet pattern Z

<?php
for ($row=0; $row<7; $row++)
{
  for ($column=0; $column<=7; $column++)
	{
     if ((($row == 0 or $row == 6) and $column >= 0 and $column <= 6) or $row+$column==6)
            echo "*";    
        else  
            echo " ";     
	}        
  echo "\n";
}
?>

Sample Output:

*******                                                     
     *                                                      
    *                                                       
   *                                                        
  *                                                         
 *                                                          
*******