1Block statements 2----- 3<?php 4echo "a"; 5{ 6} 7{ 8 echo "b"; 9} 10if ($c) { 11 echo "c"; 12 { 13 echo "d"; 14 } 15} 16----- 17echo "a"; 18{ 19} 20{ 21 echo "b"; 22} 23if ($c) { 24 echo "c"; 25 { 26 echo "d"; 27 } 28} 29