1<?php 2functiondouble($i) 3{ 4return$i*2; 5} 6$b=$a=5; /* assign the value five into the variable $a and $b */ 7$c=$a++; /* post-increment, assign original value of $a 8 (5) to $c */ 9$e=$d=++$b; /* pre-increment, assign the incremented value of 10 $b (6) to $d and $e */ 11 12/* at this point, both $d and $e are equal to 6 */ 13 14$f=double($d++); /* assign twice the value of $d before 15 the increment, 2*6 = 12 to $f */ 16$g=double(++$e); /* assign twice the value of $e after 17 the increment, 2*7 = 14 to $g */ 18$h=$g+=10; /* first, $g is incremented by 10 and ends with the 19 value of 24. the value of the assignment (24) is 20 then assigned into $h, and $h ends with the value 21 of 24 as well. */ 22?>
