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Re: error message I don understand [message #174897 is a reply to message #174896]

Sun, 17 July 2011 09:10

Thomas 'PointedEars'
Messages: 701
Registered: October 2010

Karma:

Senior Member

liebling(dot)kreuzberg(at)gmail(dot)com wrote:

> Denis McMahon wrote:
>> Consider:
>>
>> <?php
>>
>> function x()
>> {
>> return 5;
>> }
>>
>> x() = 1;
>>
>> ?>
>>
>> although x() gives the value 5, it is not a variable that can be set, and
>> so you can not assign (or write) a value (such as 1) to it.
>>
>> The php error message is saying that you can't assign (or write) a value
>> to a function call, or in other words, the return value of a function
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>> call is read_only data.
^^^^^^^^^^^^^^^^^^^^^^^
> Thanks Dennis.
>
> Good addition to the explanation of Billy.

In the end an oversimplified, wrong explanation. It is a syntactical
requirement, not a functional one:

function x()
{
return array(23);
}

$a = x();

$a[0] = 42;

/*
* Array
* (
* [0] => 42
* )
*/
print_r($a);

You would be well-advised to post under your real name, as it is customary
in Usenet.

PointedEars
--
Danny Goodman's books are out of date and teach practices that are
positively harmful for cross-browser scripting.
-- Richard Cornford, cljs, <cife6q$253$1$8300dec7(at)news(dot)demon(dot)co(dot)uk> (2004)

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[Message index]

		error message I don understand By: liebling.kreuzberg@gm on Fri, 15 July 2011 14:38
		Re: error message I don understand By: Billy Mays on Fri, 15 July 2011 14:44
		Re: error message I don understand By: liebling.kreuzberg@gm on Fri, 15 July 2011 17:26
		Re: error message I don understand By: The Natural Philosoph on Fri, 15 July 2011 17:45
		Re: error message I don understand By: liebling.kreuzberg@gm on Fri, 15 July 2011 18:36
		Re: error message I don understand By: VanguardLH on Fri, 15 July 2011 19:25
		Re: error message I don understand By: The Natural Philosoph on Fri, 15 July 2011 20:36
		Re: error message I don understand By: liebling.kreuzberg@gm on Sat, 16 July 2011 09:17
		Re: error message I don understand By: The Natural Philosoph on Sat, 16 July 2011 12:52
		Re: error message I don understand By: Heinrich Ksner on Tue, 02 August 2011 14:02
		Re: error message I don understand By: The Natural Philosoph on Fri, 15 July 2011 20:35
		Re: error message I don understand By: Jerry Stuckle on Sat, 16 July 2011 13:30
		Re: error message I don understand By: liebling.kreuzberg@gm on Sat, 16 July 2011 19:14
		Re: error message I don understand By: The Natural Philosoph on Sat, 16 July 2011 21:18
		Re: error message I don understand By: The Natural Philosoph on Fri, 15 July 2011 16:49
		Re: error message I don understand By: liebling.kreuzberg@gm on Fri, 15 July 2011 17:25
		Re: error message I don understand By: Denis McMahon on Sat, 16 July 2011 19:28
		Re: error message I don understand By: liebling.kreuzberg@gm on Sun, 17 July 2011 08:21
		Re: error message I don understand By: Thomas 'PointedEars' on Sun, 17 July 2011 09:10
		Re: error message I don understand By: The Natural Philosoph on Sun, 17 July 2011 09:20
		Re: error message I don understand By: Jerry Stuckle on Sun, 17 July 2011 13:01
		Re: error message I don understand By: Jerry Stuckle on Sun, 17 July 2011 13:00
		Re: error message I don understand By: Denis McMahon on Sun, 17 July 2011 14:53
		Re: error message I don understand By: dougatmilmacdotcom on Sun, 17 July 2011 16:26
		Re: error message I don understand By: liebling.kreuzberg@gm on Mon, 18 July 2011 16:11
		Re: error message I don understand By: Denis McMahon on Sun, 17 July 2011 14:52
		Re: error message I don understand By: Thomas 'PointedEars' on Mon, 18 July 2011 15:19
		Re: error message I don understand By: The Natural Philosoph on Mon, 18 July 2011 16:01
		Re: error message I don understand By: liebling.kreuzberg@gm on Mon, 18 July 2011 16:07
		Re: error message I don understand By: Thomas 'PointedEars' on Mon, 18 July 2011 16:27
		Re: error message I don understand By: liebling.kreuzberg@gm on Mon, 18 July 2011 20:12
		Re: error message I don understand By: August Karlstrom on Sun, 17 July 2011 12:55
		Re: error message I don understand By: Jerry Stuckle on Sun, 17 July 2011 13:03
		Re: error message I don understand By: August Karlstrom on Sun, 17 July 2011 14:50
		Re: error message I don understand By: Jerry Stuckle on Sun, 17 July 2011 16:26
		Re: error message I don understand By: Peter H. Coffin on Sun, 17 July 2011 16:31
		Nasty language semantics (Was: error message I don understand) By: August Karlstrom on Sun, 17 July 2011 17:47
		Re: Nasty language semantics (Was: error message I don understand) By: Jerry Stuckle on Sun, 17 July 2011 18:12
		Re: Nasty language semantics (Was: error message I don understand) By: Robert Heller on Sun, 17 July 2011 18:26
		Re: Nasty language semantics (Was: error message I don understand) By: Tim Streater on Sun, 17 July 2011 19:23
		Re: Nasty language semantics (Was: error message I don understand) By: The Natural Philosoph on Sun, 17 July 2011 19:50
		Re: Nasty language semantics (Was: error message I don understand) By: Robert Heller on Sun, 17 July 2011 20:17
		Re: Nasty language semantics (Was: error message I don understand) By: The Natural Philosoph on Sun, 17 July 2011 20:21
		Re: Nasty language semantics By: Thomas 'PointedEars' on Mon, 18 July 2011 16:17
		Re: Nasty language semantics (Was: error message I don understand) By: Tim Streater on Sun, 17 July 2011 22:06
		Re: Nasty language semantics (Was: error message I don understand) By: August Karlstrom on Sun, 17 July 2011 22:48
		Re: Nasty language semantics (Was: error message I don understand) By: Jerry Stuckle on Sun, 17 July 2011 23:23
		Re: Nasty language semantics (Was: error message I don understand) By: August Karlstrom on Sun, 17 July 2011 23:51
		Re: Nasty language semantics (Was: error message I don understand) By: Jerry Stuckle on Mon, 18 July 2011 01:18
		Re: Nasty language semantics (Was: error message I don understand) By: Tim Streater on Mon, 18 July 2011 08:22
		Re: Nasty language semantics (Was: error message I don understand) By: Peter H. Coffin on Mon, 18 July 2011 15:57
		Re: error message I don understand By: Thomas 'PointedEars' on Mon, 18 July 2011 15:55
		Nasty language semantics (Was: error message I don understand) By: August Karlstrom on Mon, 18 July 2011 18:31
		Re: Nasty language semantics By: Thomas 'PointedEars' on Mon, 18 July 2011 19:29

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