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Re: error message I don understand [message #174900 is a reply to message #174897] Sun, 17 July 2011 13:00 Go to previous messageGo to previous message
Jerry Stuckle is currently offline  Jerry Stuckle
Messages: 2598
Registered: September 2010
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On 7/17/2011 5:10 AM, Thomas 'PointedEars' Lahn wrote:
> 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

Which has absolutely nothing to do with the problem the op had, or with
Dennis's explanation (which, btw, is one of the better ones I've seen
for this particular problem).

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==================
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Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
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