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Re: error message I don understand [message #174896 is a reply to message #174894] Sun, 17 July 2011 08:21 Go to previous messageGo to previous message
liebling.kreuzberg@gm is currently offline  liebling.kreuzberg@gm
Messages: 10
Registered: July 2011
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Junior Member
Denis McMahon wrote:

> On Fri, 15 Jul 2011 14:38:28 +0000, liebling(dot)kreuzberg(at)gmail(dot)com wrote:
>
>
>> I'm doing some php programming on my own webserver.
>>
>> I get the error message: PHP Fatal error: Can't use function return
>> value in write context in line 69
>>
>> This is line 69: if (mysqli_num_rows($sDBResultaat) = 1 )
>>
>> Either I don see what I'm doing wrong or I interpret the message wrong.
>> Either way I don't understand, can somebody point me the right way?
>
> 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.
>
> Rgds
>
> Denis McMahon

Thanks Dennis.

Good addition to the explanation of Billy.

BR, Schimanski
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