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Re: OT: and even in Dart .........Re: simple session question [message #175719 is a reply to message #175718]

Sat, 22 October 2011 17:34

Thomas Mlynarczyk
Messages: 131
Registered: September 2010

Karma:

Senior Member

Luuk schrieb:
> i did send a bug-report:
> https://bugs.php.net/bug.php?id=60114

I do not see any bug here. I was confused because it's a crappy way to
code, but it's clear why it works the way it does:

$foo = 0;
$foo = $foo++;

is definitely identical to

$foo = 0;
$foo = ($foo++);

since ++ has higher precedence than =. In fact, ($foo = $foo)++ does
rightfully throw a parse error, since you can only increment a variable,
not an expression.

As mentioned before in this thread, the above code is equivalent to

$foo = 0;
$tmp = $foo; // $foo++ yields the previous value, which is 0
$foo = $foo + 1; // then $foo is incremented...
$foo = $tmp; // ...and then re-assigned the old value

It's the exact same procedure as it would be with $foo = $bar++.

Greetings,
Thomas

--
Ce n'est pas parce qu'ils sont nombreux à avoir tort qu'ils ont raison!
(Coluche)

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[Message index]

		simple session question By: cerr on Fri, 21 October 2011 17:44
		Re: simple session question By: Thomas Mlynarczyk on Fri, 21 October 2011 18:19
		Re: simple session question By: Jonathan Stein on Fri, 21 October 2011 18:51
		Re: simple session question By: Thomas Mlynarczyk on Fri, 21 October 2011 20:00
		Re: simple session question By: Jerry Stuckle on Fri, 21 October 2011 20:14
		Re: simple session question By: Thomas Mlynarczyk on Fri, 21 October 2011 22:50
		Re: simple session question By: Jerry Stuckle on Fri, 21 October 2011 23:05
		Re: simple session question By: Thomas Mlynarczyk on Sat, 22 October 2011 13:40
		Re: simple session question By: Richard Damon on Sat, 22 October 2011 21:19
		Re: simple session question By: The Natural Philosoph on Sat, 22 October 2011 21:56
		Re: simple session question By: Thomas Mlynarczyk on Sat, 22 October 2011 22:35
		Re: simple session question By: Tim Streater on Sat, 22 October 2011 22:43
		Re: simple session question By: Thomas Mlynarczyk on Sat, 22 October 2011 23:56
		Re: simple session question By: Richard Damon on Sat, 22 October 2011 23:29
		Re: simple session question By: Thomas Mlynarczyk on Sat, 22 October 2011 23:54
		Re: simple session question By: Thomas Mlynarczyk on Sun, 23 October 2011 00:12
		Re: simple session question By: Richard Damon on Sun, 23 October 2011 01:13
		Re: simple session question By: The Natural Philosoph on Sun, 23 October 2011 07:44
		Re: simple session question By: Thomas Mlynarczyk on Sun, 23 October 2011 15:31
		Re: simple session question By: The Natural Philosoph on Sun, 23 October 2011 16:18
		Re: simple session question By: Thomas Mlynarczyk on Sun, 23 October 2011 17:14
		Re: simple session question By: The Natural Philosoph on Sun, 23 October 2011 17:16
		Re: simple session question By: Thomas Mlynarczyk on Sun, 23 October 2011 17:00
		Re: simple session question By: Richard Damon on Sun, 23 October 2011 19:28
		Re: simple session question By: Jerry Stuckle on Sun, 23 October 2011 03:03
		Re: simple session question By: Thomas Mlynarczyk on Sun, 23 October 2011 17:06
		Re: simple session question By: Jerry Stuckle on Sun, 23 October 2011 18:35
		Re: simple session question By: The Natural Philosoph on Fri, 21 October 2011 23:32
		Re: simple session question By: Luuk on Sat, 22 October 2011 10:01
		Re: simple session question By: The Natural Philosoph on Sat, 22 October 2011 14:27
		Re: simple session question By: The Natural Philosoph on Sat, 22 October 2011 14:37
		Re: simple session question By: Luuk on Sat, 22 October 2011 15:08
		OT: and even in Dart .........Re: simple session question By: Luuk on Sat, 22 October 2011 15:17
		Re: OT: and even in Dart .........Re: simple session question By: The Natural Philosoph on Sat, 22 October 2011 15:54
		Re: OT: and even in Dart .........Re: simple session question By: Luuk on Sat, 22 October 2011 16:47
		Re: OT: and even in Dart .........Re: simple session question By: Thomas Mlynarczyk on Sat, 22 October 2011 17:34
		Re: OT: and even in Dart .........Re: simple session question By: Norman Peelman on Sat, 22 October 2011 20:08
		Re: OT: and even in Dart .........Re: simple session question By: Jerry Stuckle on Sat, 22 October 2011 20:28
		Re: OT: and even in Dart .........Re: simple session question By: Thomas Mlynarczyk on Sat, 22 October 2011 23:39
		Re: OT: and even in Dart .........Re: simple session question By: Norman Peelman on Sun, 23 October 2011 02:40
		Re: OT: and even in Dart .........Re: simple session question By: Jerry Stuckle on Sun, 23 October 2011 03:05
		Re: OT: and even in Dart .........Re: simple session question By: The Natural Philosoph on Sat, 22 October 2011 21:52
		Re: OT: and even in Dart .........Re: simple session question By: Thomas Mlynarczyk on Sat, 22 October 2011 23:25
		Re: OT: and even in Dart .........Re: simple session question By: The Natural Philosoph on Sun, 23 October 2011 07:41
		Re: OT: and even in Dart .........Re: simple session question By: Thomas Mlynarczyk on Sat, 22 October 2011 22:56
		Re: OT: and even in Dart .........Re: simple session question By: Norman Peelman on Sun, 23 October 2011 02:52
		Re: OT: and even in Dart .........Re: simple session question By: Thomas Mlynarczyk on Sun, 23 October 2011 15:12
		Re: OT: and even in Dart .........Re: simple session question By: Tim Streater on Sun, 23 October 2011 08:39
		Re: OT: and even in Dart .........Re: simple session question By: The Natural Philosoph on Sun, 23 October 2011 08:40
		Re: OT: and even in Dart .........Re: simple session question By: Tim Streater on Sun, 23 October 2011 08:43
		Re: OT: and even in Dart .........Re: simple session question By: Peter H. Coffin on Sat, 05 November 2011 20:04
		Re: OT: and even in Dart .........Re: simple session question By: The Natural Philosoph on Sat, 22 October 2011 21:47
		Re: OT: and even in Dart .........Re: simple session question By: Thomas Mlynarczyk on Sat, 22 October 2011 23:22
		Re: OT: and even in Dart .........Re: simple session question By: The Natural Philosoph on Sun, 23 October 2011 07:40
		Re: OT: and even in Dart .........Re: simple session question By: Thomas Mlynarczyk on Sun, 23 October 2011 15:04
		Re: OT: and even in Dart .........Re: simple session question By: Peter H. Coffin on Sat, 05 November 2011 20:00
		Re: simple session question By: Thomas Mlynarczyk on Sat, 22 October 2011 13:39
		Re: simple session question By: cerr on Fri, 21 October 2011 21:43
		Re: simple session question By: Thomas Mlynarczyk on Fri, 21 October 2011 22:47
		Re: simple session question By: Jerry Stuckle on Fri, 21 October 2011 23:06
		Re: simple session question By: cerr on Fri, 21 October 2011 21:17
		Re: simple session question By: Thomas Mlynarczyk on Sat, 22 October 2011 13:50
		Re: simple session question By: Denis McMahon on Sun, 23 October 2011 15:47

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