[ELECTRON] PHP - question. . . webcam script...

[Ben Rush]

Gordon,

Thanks for taking a look at this - I got the sense that an something
was firing off before it should. I've yet to break away from family
obligations this weekend, but I have managed to post the code to paste
bin: http://pastebin.com/rrC86Zdj

happy Easter everyone - cracking day out today, spent it fishing for
sculpture bits out of the graving docs in Govan -- good times!

Ben


On 3 April 2010 20:43, Gordon JC Pearce <gordonjcp at gjcp.net> wrote:
> On Sat, 2010-04-03 at 00:15 +0100, Ben Rush wrote:
>> Hello folks,
>> Im going to preface this by stating I'm a self described noob, so if
>> this seems elementary - I stand by my assertion.
>> I have come to a block and Im not sure how to deal with it, and any
>> thought would be amazing.
>>
>> Im working on a fetch image script for a webcam and everything seemed
>> hunky-dorry.
>>
>> I later decided to add an if/else on the off chance the camera wasn't
>> available. This is where things got confusing.
>>
>> If the camera fails I get a "Warning: Cannot modify header
>> information". The thing is I cant figure out were the header info is
>> being declared, as the warning seem to indicate that the declaration
>> comes from in the 'if' statement itself. Wait didn't that just fail?!?
>
> Something is outputting stuff to the server before you get a chance to
> send the header() part.
>
> A quick demonstration - type "telnet www.electronclub.org 80"
> Once you get the "Escape character is '^]'." message type
> "GET / HTTP/1.0" then <RETURN> <RETURN>
>
> You'll see the server's response - "HTTP/1.1 200 OK" and a bunch of
> things like "Date:" and "Length:" and importantly "Content-Type:".
> These are the headers.  There's a blank line before the actual content
> *and this is very important*.
> Once you send that blank line, you cannot send any more headers.
>
>> Moving the 'header('content-type: image/jpg');' higher up in the
>> script doesn't seem to fix it. Moving it before the if statement all
>> together gives a broken image link - the echo of file contents don't
>> seem to make to the browser.
>>
>> I also checked to see if there was any empty space before or after my
>> <? ?> - no empty echoes there either. .
>
> Can you put the script up in something like pastebin, with line numbers?
> That would make it a wee bit easier to trace.
>
> Gordon MM0YEQ
>
>
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