function pyramid($n) {
 // number of spaces
 $k = $n;
 // outer loop to handle number of rows
 // n in this case
 for ($i = 0; $i < $n; $i++) {
	  // inner loop to handle number spaces values changing acc.
	  // to requirement
	  for ($j = 0; $j < $k; $j++) {
	   echo " ";
	  }
	 
	  // decrementing k after each loop
	  $k = $k - 1;
	 
	  // inner loop to handle number of columns
	  // values changing acc. to outer loop
	  for ($j = 0; $j <= $i; $j++ )
	  {
	   // printing stars
	   echo "* ";
	  }
	 
	  // ending line after each row
	  echo "\n";
	 }
}
 // Driver Code
 $n = 10;
 pyramid($n);

          1 
         1 1 
        1 1 1 
       1 1 1 1 
      1 1 1 1 1 
     1 1 1 1 1 1 
    1 1 1 1 1 1 1 
   1 1 1 1 1 1 1 1 
  1 1 1 1 1 1 1 1 1 
 1 1 1 1 1 1 1 1 1 1