Re: 23 nothing is so as it seems, but why

Hello Marco, though Hartmut is perfectly correct in his statement here's what happens: $a = 10; // 10 ++$a // 11 $a + $a // 22 $a++ // 23 Thursday, January 19, 2006, 5:41:17 PM, you wrote: > Today during a session i had a strange "magic" feature found in php. > <?php > $a = 10; > echo ++$a + $a++; ?>> just to verfiy echo $a after your echo line, it will show 12 > this works perfect as expected. it returns 22. > but if i assign $a as a ref. to another variable it will be return 23. > <? > $a = 10; > $b = &$a; > echo ++$a + $a++; ?>> > this will gave me to 23 > (used the $b to the pre post stuff) > <? > $a = 10; > $b = &$a; > echo ++$b + $b++; ?>> > this just happens if i have a ref. count to my var. WHY? :) > http://en.wikipedia.org/wiki/23_%28film%29 > -- > Marco Kaiser Best regards, Marcus