image_graph in a function

[me1000]

Hi,

 

(all of this is using the PEAR library image_graph http://pear.php.net/package/Image_Graph )

 

I have a file where I need to create several different graphs all the same kind with limited redundancy. So I have created a function where I pass an array of data through it to create the graph.

 

this is what I have that generates the file,

 

function makePieChart($data){


require_once 'Image/Graph.php'; 


// create the graph 
$Graph =& Image_Graph::factory('graph', array(400, 300)); 

// create the plotarea 
$Graph->add( 
Image_Graph::vertical( 
Image_Graph::factory('title', array('OnDemand Overall Status', 12)), 
Image_Graph::horizontal( 
$Plotarea = Image_Graph::factory('plotarea'), 
$Legend = Image_Graph::factory('legend'), 
70 
), 
5 
) 
); 

$Legend->setPlotarea($Plotarea); 

// create the 1st dataset 

$Dataset1 =& Image_Graph::factory('dataset'); 



foreach($data as $value){
$Dataset1->addPoint($value['name'], $value['number']);
} // this gets the $data array from the PDF file, and loops it to create 


$Graph->done(array('filename' => 'output.png'));

}

 

 

 

 

 

 

 

 

I took out a lot of stuff from it, because I didnt see a need to post it but it works in generating a file.

 

 

now here is the problem,

 

when I call the function from another file with this code,

 

 

 

 

include("charts.php");
makePieChart($data)

;

 

 

 

it gives me an error, saying the headers were already sent. So the script is making the php file act as a png correct?

is there a way so that when I call up the function it just creates the new output.png file?

 

 

Thanks,

[Northern Flame]

Does Graph.php

send out headers?

[unsider]

Does Graph.php

send out headers?

 

What he said:

 

something like this:

 

header('Content-type: image/jpeg');

[me1000]

I believe it is $Graph->add() which sends the headers, Ill check tomorrow for sure, but Im about 95% sure graph.php is just a bunch of classes in which you must call in order for anything to execute.

 

however the header must be sent sometime to create the PNG... right?

 

[unsider]

I'm not thoroughly educated in this area, as I have never worked with it before so excuse my possible ignorance...

 

Does the image_draw function require the GD library, or any other libraries for that matter to be enabled?

[me1000]

I dont know where you see image_draw() at, but I believe the image_graph class require the GD library...

[unsider]

Haha, oops, my mistake, I meant image_graph.

 

And ok, I thought so.

[me1000]

ok, the code works now, I just coped the whole charts.php page into the page that was including it which brings me to my next question.

 

Can you not send arrays through a function? for example if my array were,

 

$data['1]=123;

$data['2]=456;

$data['3]=789;

 

and I send $data through the function

 

functionName($data);

 

EDIT: nevermind, because I am still sending the array data through the function!

I really have no idea what was going on...

 

does that not work?