| Re: Pipe the content of a variable to a process [message #173049 is a reply to message #173048] |
Fri, 18 March 2011 20:09   |
Marco
Messages: 11
Registered: March 2011
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Junior Member |
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On 2011-03-18 Jerry Stuckle <jstucklex(at)attglobal(dot)net> wrote:
> On 3/18/2011 3:21 PM, Marco wrote:
>> On 2011-03-18 Jerry Stuckle<jstucklex(at)attglobal(dot)net> wrote:
>>
>>> Are you running your test from the CLI? Or are you trying to run it as
>>> part of the web page?
>>>
>>> If the latter - are you putting out valid html? Have you looked at the
>>> document source to see what's there?
>>
>> At first I tried putting it into a (valid) web page. During the creation
>> of the minimal example I removed all the html stuff. I sent the complete
>> script in my second post in this thread. When I look directly at the
>> source I just see the »0« (echo $return_value . "\n";). And when I
>> redirect stdout and stderr to a file there's a »0« in file_stdout and
>> file_stderr is empty.
>>
>> I have absolutely no clue what's going on here, since it works with »cat«
>> as a process and gnuplot works with »passthru«. That »cat« works means
>> that my workflow with the pipes is right and that gnuplot works with
>> »passthru« means that gnuplot is working inside PHP.
>>
>> Thanks for your help, I hope we can get it solved.
>>
>> Marco
>>
>
> OK, I downloaded and installed gnuplot on my system. Change this line:
>
> $stdin_data = "set terminal svg;plot sin(x)\n";
>
> Note the newline char at the end.
Thats it!!!!! Million thanks.
How can that be?! In the shell it works without »\n«. Anyway, thanks for the
effort you put into solving my problem.
Marco
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