So, got it working finally - at least partly.
http://geodata.grid.unep.ch/webservices/graph_example2.php
But still, as soon as my included file calls any function, no value
is being returned. That's why there are the error messages for
PostgreSQL etc.... Very strange.
http://geodata.grid.unep.ch/webservices/graph_example3.php
> http://geodata.grid.unep.ch/webservices/graphexe_webservice.php
> makes postgresql calls, does something with the results, then uses
> header, print, echo, etc., to create an HTTP response containing a
> PNG image. It works fine and returns the image to my browser with
> no error.
>
> You now include that exact PHP source file from your other PHP
> source file that implements the web service. The web service code
> presumably calls the graphexe_webservice.php functions that make
> postgresql calls and process the result into a PNG image, then the
> service returns the contents of the PNG image as an attachment or
> base64Binary result. However, when the web service PHP source calls
> the functions in graphexe_webservice.php, you get warnings:
>
> Warning: pg_num_rows(): supplied argument is not a valid
> PostgreSQL result resource in /www/geodataportal/htdocs/etc/inc/
> database.inc on line 223
>
> Warning: pg_num_fields(): supplied argument is not a valid
> PostgreSQL result resource in /www/geodataportal/htdocs/webservices/
> graphexe_webservice.php on line 201
>
> Warning: pg_num_rows(): supplied argument is not a valid
> PostgreSQL result resource in /www/geodataportal/htdocs/etc/inc/
> database.inc on line 223
>
> Warning: pg_fetch_array(): supplied argument is not a valid
> PostgreSQL result resource in www/geodataportal/htdocs/webservices/
> graphexe_webservice.php on line 316
>
> These warnings mean the pg_query() call did not return a result
> resource. Could your code check the return value for FALSE and
> display or log the value from pg_last_error()? Perhaps your code
> could also display or log the value of the query string that gets
> passed.
>
> Scott Nichol
> ----- Original Message ----- From: "Stefan Schwarzer"
> <stefan.schwarzer@xxxxxxxxxxxx>
> To: "Scott Nichol" <snicholnews@xxxxxxxxxxxxxxx>
> Cc: <nusoap-general@xxxxxxxxxxxxxxxxxxxxx>
> Sent: Tuesday, April 24, 2007 9:10 AM
> Subject: Re: [Nusoap-general] NuSoap & Binary Attachments
>
>
>>
>>
>>> When I go to http://geodata.grid.unep.ch/webservices/
>>> graph_example2.php, I see all the PostgreSQL warnings that are
>>> causing the problem. Your web service code cannot allow
>>> warnings to be sent in the HTTP response.
>>
>> Yep, but the Warnings are due to the fact that, as described
>> below, the functions used within the PHP file which I include in
>> the webservice-file, don't return anymore any values. However, if
>> I call the the included file directly ( http://
>> geodata.grid.unep.ch/ webservices/graphexe_webservice.php ), than
>> there is no error.
>>
>> So, how comes that an
>>
>> include("graphexe_webservice.php");
>>
>> within the webservice file eliminates the possibility of returning
>> values from functions within that file?
>>
>>
>>
>>>
>>> Scott Nichol
>>>
>>> ----- Original Message ----- From: "Stefan Schwarzer"
>>> <stefan.schwarzer@xxxxxxxxxxxx>
>>> To: "Scott Nichol" <snicholnews@xxxxxxxxxxxxxxx>
>>> Sent: Tuesday, April 24, 2007 12:57 AM
>>> Subject: Re: [Nusoap-general] NuSoap & Binary Attachments
>>>
>>>
>>>> Oh, sorry, when you tried, I was just trying to place my
>>>> "include ('graph.php')" somewhere else (outside the function)
>>>> which resulted in that error. Normally it's really the problem
>>>> that it seems no values are being returned from any of the
>>>> functions which can be found in my included file.
>>>>
>>>>
>>>>
>>>>> I see the text for the constructor error. My advice is to also
>>>>> display debug in that case
>>>>>
>>>>> if ($err) {
>>>>> echo '<h2>Constructor error</h2><pre>' . $err . '</pre>';
>>>>> echo '<h2>Debug</h2><pre>' . htmlspecialchars($client-
>>>>> >debug_str, ENT_QUOTES) . '</pre>';
>>>>> exit();
>>>>> }
>>>>>
>>>>> Given the error "...on line 1: not well-formed (invalid
>>>>> token)", one possible problem is that the PHP file containing
>>>>> the service has text in it outside the <? and ?>. PHP will
>>>>> send that text to its output, which means it will be included
>>>>> in the WSDL.
>>>>>
>>>>> Scott Nichol
>>>>>
>>>>> ----- Original Message ----- From: "Stefan Schwarzer"
>>>>> <stefan.schwarzer@xxxxxxxxxxxx>
>>>>> To: "Scott Nichol" <snicholnews@xxxxxxxxxxxxxxx>
>>>>> Cc: <nusoap-general@xxxxxxxxxxxxxxxxxxxxx>
>>>>> Sent: Friday, April 20, 2007 3:44 AM
>>>>> Subject: Re: [Nusoap-general] NuSoap & Binary Attachments
>>>>>
>>>>>
>>>>>> This one ( http://geodata.grid.unep.ch/webservices/
>>>>>> graph_example.php ) works well now. Although I am happy that
>>>>>> finally the thing is working, it only deals with a static
>>>>>> image. But
>>>>>> when including another file within the getFile() function, it
>>>>>> led to
>>>>>> the error message that you've seen.
>>>>>>
>>>>>> So, I tried to run my normal PHP files (which are used on the
>>>>>> website
>>>>>> to produce dynamically a graph), but - puhhhh - suddenly, my
>>>>>> functions do not return any values anymore. So, for example I
>>>>>> call a
>>>>>> function which queries the database and than sends back the
>>>>>> $result.
>>>>>> But now, this is empty. Is this something related to the nusoap /
>>>>>> Soap libs? Not allowed to return values from other functions?
>>>>>>
>>>>>> This is the new test file:
>>>>>> http://geodata.grid.unep.ch/webservices/graph_example2.php
>>>>>>
>>>>>> And here is the file which is being included into the getFile()
>>>>>> function, which shows that the file itself is working correctly:
>>>>>> http://geodata.grid.unep.ch/webservices/graphexe_webservice.php
>>>>>>
>>>>>>
>>>>>>
>>>>>>> It looks like you've made these changes. When I go to http://
>>>>>>> geodata.grid.unep.ch/webservices/graph_example.php, I get the
>>>>>>> Error
>>>>>>> with Response is not of type text/xml. That means the SOAP
>>>>>>> call to
>>>>>>> getFile is failing. You could get some additional
>>>>>>> information by
>>>>>>> doing the following:
>>>>>>>
>>>>>>> <?php
>>>>>>> // includes nusoap classes
>>>>>>> include('nusoap.php');
>>>>>>> // creates an instance of the SOAP client object
>>>>>>> $wsdl = 'http://my-url/graph_ws.php?wsdl&debug=1'; // ask for
>>>>>>> debug
>>>>>>> $client = new soapclient($wsdl, 'wsdl');
>>>>>>> $err = $client->getError();
>>>>>>> if ($err) {
>>>>>>> echo '<h2>Constructor error</h2><pre>' . $err . '</pre>';
>>>>>>> exit();
>>>>>>> }
>>>>>>> $result = $client->call('getFile', array('filename' =>
>>>>>>> 'graphexe.gif'));
>>>>>>> if ($client->fault) {
>>>>>>> echo '<h2>Fault</h2><pre>'; print_r($result); echo '</pre>';
>>>>>>> exit();
>>>>>>> } else {
>>>>>>> $err = $client->getError();
>>>>>>> if ($err) {
>>>>>>> echo '<h2>Error</h2><pre>' . $err . '</pre>';
>>>>>>> // print all the key debugging information
>>>>>>> echo '<h2>Request</h2><pre>' . htmlspecialchars($client-
>>>>>>> >request,
>>>>>>> ENT_QUOTES) . '</pre>';
>>>>>>> echo '<h2>Response</h2><pre>' . htmlspecialchars($client-
>>>>>>> >response,
>>>>>>> ENT_QUOTES) . '</pre>';
>>>>>>> echo '<h2>Debug</h2><pre>' . htmlspecialchars($client-
>>>>>>> >debug_str,
>>>>>>> ENT_QUOTES) . '</pre>';
>>>>>>> exit();
>>>>>>> }
>>>>>>> header("Content-Type: image/gif");
>>>>>>> header("Content-Length: " . strlen($result));
>>>>>>> echo $result;
>>>>>>> ?>
>>>>>>>
>>>>>>> Scott Nichol
>>>>>>> ----- Original Message ----- From: "Scott Nichol"
>>>>>>> <snicholnews@xxxxxxxxxxxxxxx>
>>>>>>> To: "Stefan Schwarzer" <stefan.schwarzer@xxxxxxxxxxxx>
>>>>>>> Cc: <nusoap-general@xxxxxxxxxxxxxxxxxxxxx>
>>>>>>> Sent: Wednesday, April 18, 2007 11:32 AM
>>>>>>> Subject: Re: [Nusoap-general] NuSoap & Binary Attachments
>>>>>>>
>>>>>>>
>>>>>>>> I would start by adding error handling to your code, such as
>>>>>>>>
>>>>>>>> <?php
>>>>>>>> // includes nusoap classes
>>>>>>>> include('nusoap.php');
>>>>>>>> // creates an instance of the SOAP client object
>>>>>>>> $wsdl = 'http://my-url/graph_ws.php?wsdl';
>>>>>>>> $client = new soapclient($wsdl, 'wsdl');
>>>>>>>> $err = $client->getError();
>>>>>>>> if ($err) {
>>>>>>>> echo '<h2>Constructor error</h2><pre>' . $err . '</pre>';
>>>>>>>> exit();
>>>>>>>> }
>>>>>>>> $result = $client->call('getFile', array('filename' =>
>>>>>>>> 'graphexe.gif'));
>>>>>>>> if ($client->fault) {
>>>>>>>> echo '<h2>Fault</h2><pre>'; print_r($result); echo '</pre>';
>>>>>>>> exit();
>>>>>>>> } else {
>>>>>>>> $err = $client->getError();
>>>>>>>> if ($err) {
>>>>>>>> echo '<h2>Error</h2><pre>' . $err . '</pre>';
>>>>>>>> exit();
>>>>>>>> }
>>>>>>>> header("Content-Type: image/gif");
>>>>>>>> header("Content-Length: " . strlen($result));
>>>>>>>> echo $result;
>>>>>>>> ?>
>>>>>>>>
>>>>>>>> Scott Nichol
>>>>>>>> ----- Original Message ----- From: "Stefan Schwarzer"
>>>>>>>> <stefan.schwarzer@xxxxxxxxxxxx>
>>>>>>>> To: "Scott Nichol" <snicholnews@xxxxxxxxxxxxxxx>
>>>>>>>> Cc: <nusoap-general@xxxxxxxxxxxxxxxxxxxxx>
>>>>>>>> Sent: Wednesday, April 18, 2007 2:15 AM
>>>>>>>> Subject: Re: [Nusoap-general] NuSoap & Binary Attachments
>>>>>>>>
>>>>>>>>
>>>>>>>>>
>>>>>>>>>> The service code you pasted below shows
>>>>>>>>>>
>>>>>>>>>> // Use the request to (try to) invoke the service
>>>>>>>>>> //$HTTP_RAW_POST_DATA = isset($HTTP_RAW_POST_DATA) ?
>>>>>>>>>> $HTTP_RAW_POST_DATA : '';
>>>>>>>>>> //$server->service($HTTP_RAW_POST_DATA);
>>>>>>>>>>
>>>>>>>>>> If you really have those lines commented, your service
>>>>>>>>>> will not do
>>>>>>>>>> anything. The $server->service call is where the SOAP
>>>>>>>>>> call gets
>>>>>>>>>> handled.
>>>>>>>>>
>>>>>>>>> Ah, ok. But I tried it before with and without these lines,
>>>>>>>>> and it's
>>>>>>>>> not working either way.
>>>>>>>>>
>>>>>>>>> Here is the URL: http://geodata.grid.unep.ch/webservices/
>>>>>>>>> graph_example.php
>>>>>>>>>
>>>>>>>>> Gush, I had/have the impression that it's so close to get it
>>>>>>>>> working.... Where lays the problem, dam....
>>>>>>>>>
>>>>>>>>> Stef
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>> Hmmm.... in principal it should be clear by now. But it
>>>>>>>>>>> still
>>>>>>>>>>> doesn't work. I did as you indicated (see code below),
>>>>>>>>>>> but it
>>>>>>>>>>> returns an empty page/image. Do you have any idea why
>>>>>>>>>>> this would
>>>>>>>>>>> be so?
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> CLIENT:
>>>>>>>>>>>
>>>>>>>>>>> <?php
>>>>>>>>>>> // includes nusoap classes
>>>>>>>>>>> include('nusoap.php');
>>>>>>>>>>>
>>>>>>>>>>> // creates an instance of the SOAP client object
>>>>>>>>>>> $wsdl = 'http://my-url/graph_ws.php?wsdl';
>>>>>>>>>>>
>>>>>>>>>>> $client = new soapclient($wsdl, 'wsdl');
>>>>>>>>>>>
>>>>>>>>>>> $result = $client->call('getFile', array('filename' =>
>>>>>>>>>>> 'graphexe.gif'));
>>>>>>>>>>>
>>>>>>>>>>> header("Content-Type: image/gif");
>>>>>>>>>>> header("Content-Length: " . strlen($result));
>>>>>>>>>>> echo $result;
>>>>>>>>>>> ?>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> SERVER:
>>>>>>>>>>>
>>>>>>>>>>> // Define the method as a PHP function
>>>>>>>>>>> function getFile($filename) {
>>>>>>>>>>> global $HTTP_SERVER_VARS;
>>>>>>>>>>> if ($filename != 'php.gif' && $filename != 'getfile1.php') {
>>>>>>>>>>> return new soap_fault('SOAP-ENV:Client', 'getfile1',
>>>>>>>>>>> 'Unsupported
>>>>>>>>>>> file name', array('filename' => $filename));
>>>>>>>>>>> }
>>>>>>>>>>> $path = '/www/geodataportal/htdocs/webservices/' .
>>>>>>>>>>> $filename;
>>>>>>>>>>> $handle = fopen($path, "rb");
>>>>>>>>>>> $contents = fread($handle, filesize($path));
>>>>>>>>>>> fclose($handle);
>>>>>>>>>>> return base64_encode($contents);
>>>>>>>>>>> }
>>>>>>>>>>> // Use the request to (try to) invoke the service
>>>>>>>>>>> //$HTTP_RAW_POST_DATA = isset($HTTP_RAW_POST_DATA) ?
>>>>>>>>>>> $HTTP_RAW_POST_DATA : '';
>>>>>>>>>>> //$server->service($HTTP_RAW_POST_DATA);
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> On Apr 16, 2007, at 4:55 PM, Scott Nichol wrote:
>>>>>>>>>>>
>>>>>>>>>>>> filesize() is not going to find your file, so nothing
>>>>>>>>>>>> gets read.
>>>>>>>>>>>> You need to do
>>>>>>>>>>>>
>>>>>>>>>>>> $path = '/www/geodataportal/htdocs/webservices/' .
>>>>>>>>>>>> $filename;
>>>>>>>>>>>> $handle = fopen($path, "rb");
>>>>>>>>>>>> $contents = fread($handle, filesize($path));
>>>>>>>>>>>> fclose($handle);
>>>>>>>>>>>> return base64_encode($contents);
>>>>>>>>>>>>
>>>>>>>>>>>> Scott Nichol
>>>>>>>>>>>>
>>>>>>>>>>>> ----- Original Message ----- From: "Stefan Schwarzer"
>>>>>>>>>>>> <stefan.schwarzer@xxxxxxxxxxxx>
>>>>>>>>>>>> To: "Scott Nichol" <snicholnews@xxxxxxxxxxxxxxx>
>>>>>>>>>>>> Cc: <nusoap-general@xxxxxxxxxxxxxxxxxxxxx>
>>>>>>>>>>>> Sent: Monday, April 16, 2007 10:45 AM
>>>>>>>>>>>> Subject: Re: [Nusoap-general] NuSoap & Binary Attachments
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> // base64_decode here ????
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> $fp = fopen("/www/geodataportal/temp/graph_test.gif",
>>>>>>>>>>>>>>> "w"); // do I need to write the content of $result
>>>>>>>>>>>>>>> into an
>>>>>>>>>>>>>>> image?
>>>>>>>>>>>>>>> fwrite($fp, $result);
>>>>>>>>>>>>>>> fclose($fp);
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> echo '<img src="http://geodata.grid.unep.ch/temp/
>>>>>>>>>>>>>>> graph_test.gif" alt="" />'; // ... and then load it as
>>>>>>>>>>>>>>> graphic?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> You do not need to base64_decode; NuSOAP will do that
>>>>>>>>>>>>>> for you.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> The method you specify will work if you want to have a
>>>>>>>>>>>>>> script
>>>>>>>>>>>>>> that returns a page that has the img. You can also, of
>>>>>>>>>>>>>> course, have a PHP script that returns the GIF it
>>>>>>>>>>>>>> gets from
>>>>>>>>>>>>>> the web service. After $result = $client->call(...), the
>>>>>>>>>>>>>> script would set the Content-Type header it returns
>>>>>>>>>>>>>> to image/
>>>>>>>>>>>>>> gif and return the result, something like
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> header("Content-Type: image/gif");
>>>>>>>>>>>>>> header("Content-Length: " . strlen($result));
>>>>>>>>>>>>>> echo $result;
>>>>>>>>>>>>>
>>>>>>>>>>>>> Scott, thanks for that clarification.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Do I have to change something within the servers' code
>>>>>>>>>>>>> to get it
>>>>>>>>>>>>> working? In the moment I get a blank image as result....
>>>>>>>>>>>>>
>>>>>>>>>>>>> $handle = fopen('/www/geodataportal/htdocs/webservices/' .
>>>>>>>>>>>>> $filename, "rb");
>>>>>>>>>>>>> $contents = fread($handle, filesize($filename));
>>>>>>>>>>>>> fclose($handle);
>>>>>>>>>>>>> return base64_encode($contents);
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
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>>>>>>>>> _______________________________________________
>>>>>>>>> Nusoap-general mailing list
>>>>>>>>> Nusoap-general@xxxxxxxxxxxxxxxxxxxxx
>>>>>>>>> https://lists.sourceforge.net/lists/listinfo/nusoap-general
>>>>>>>>>
>>>>>>>>
>>>>>>>>
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>>>>>>
>>>>>>
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