<?php

// your code goes here

$n = 10;
for ($i = 1; $i <= $n; $i++)
{
    for ($j = 0; $j < ($n - $i); $j++)
        echo " ";
    echo "*";
    for ($j = 1; $j <= $i-1; $j++)
        echo " ";
    for ($k = 1; $k < $i-1; $k++)
        echo " ";
    if($i!=1)
        echo "*\n";
}