This is normal. It happened to me with some browsers…

thank you very much,

I have a Vo using the above example + $childItems_aut which is an array in the object. I create the Vo in php and it contains the $childItems (in my case relations from another table) as child array items to each vo object.

Now when i use the follwoing in actionscript….

var resultVoObject:Array = new Array();
resultVoObject= event.result as Array;

The…. id_aut;
fname_aut;
lname_aut;

…are all good but i do not get a child array $childItems_aut that contains the child array items, instead a value of NULL

what am i doing wrong?

thanks in advance.

So if you can connect to the gateway file but the response’s content-type isn’t application/x-amf, then check the encoding of your PHP files.

Thank you Steven for posting your message, as I had the same problem.

Also, thanks again to Mihai for the great tutorial.

-Chris

Any idea how to push data from server-side to flex client using Zend Framework?

I made the following change in the index.php file.

$server = new Zend_Amf_Server();
$server->addDirectory(APPLICATION_PATH . ‘/services’);
echo $server->handle();

Doing this the flex application displays “Channel Disconnected”. What could be going wrong in this?

UserVO.as <– this works
package com.ryancanulla.dashboard.login.vo {
[RemoteClass(alias="com.ryancanulla.dashboard.login.vo.UserVO")]
[Bindable]
public class UserVO {
public var userID:uint;
public var userEmail:String;
public var userPassword:String;
public var userFirstName:String;
public var userLastName:String;

}
}

UserVO.php

TestVO.as <–not working
package com.ryancanulla.dashboard.login.vo {
[RemoteClass(alias="com.ryancanulla.dashboard.login.vo.TestVO")]
[Bindable]
public class TestVO {
public var userID:uint;
public var userEmail:String;
public var userPassword:String;
public var userFirstName:String;
public var userLastName:String;

}
}

TestVO.php

Bootstrap…
$server->setClassMap(‘com.ryancanulla.dashboard.login.vo.UserVO’, ‘UserVO’);
$server->setClassMap(‘com.ryancanulla.dashboard.login.vo.TestVO’, ‘TestVO’);

package com.ryancanulla.dashboard_v2.vo {
[RemoteClass(alias="LoginVO")] <—-
[Bindable]
public class LoginVO {

Are there any general rules?
- AS class has [RemoteClass(alias="LoginVO")];
- Two VO’s are identical (vars match)
- method returns a strictly typed VO
- Bootstrap sets class $server->setClass(“Test”);
—- Should it call the setCLass method for he VO class?

- Bootstrap sets classMap
—- $server->setClassMap(“LoginVO”,”LoginVO”);

Any thoughts are appreciated. I really want to understand what is going on and not just make it work.

Can you have multiple setClass methods, and also multiple setClassMap() functions?

Most likely the mapping of the PHP VO to AS VO is not done correctly.

function __autoload($class_name) {

if (strpos($class_name,”Zend”) !== false){
$arr = split(“_”,$class_name);
$nome_classe_zend =”";
for ($i=0;$i<count($arr);$i++){
if ($i == count($arr)-1){
$nome_classe_zend .= $arr[$i] . ".php";
}else{
$nome_classe_zend .= $arr[$i] . "/";
}
}
require($nome_classe_zend);
}
}

that is I load a class only when need.

http://gfxcomplex.com/video/zend-amf-vs-amph_amfphp-ftw/

http://framework.zend.com/issues/browse/ZF-7493

The function: org.vo::VOTrainingRating() is the constructor of the class VOTrainingRating.as.
The problem is : I never instanciate this class.
Just One time : in the php class. But, we agree, the “new VOTrainingRating()” in my php class refers to my php class…. and not to my as class..
So Why Do I this message please ?
I would precise that when I broke the alias in my .as file (I remove the line [RemoteClass (alias="VOTrainingRating")]), I have no longer the error, and I recover perfectly the datas..
So it seems that when I instanciate my class in php, It instanciate the class in .as, and when I remove the alias, it does not, it works fine ….
I would recall that this code (TrainingRatingService.php, VOTrainingRating.php, VOTrainingRating.as) looks like the code I have already done for all others class /services in my project..

I don’t know how I can resolve that.
Do you know how I could please ?
Thanks.

where should I put the ini_set() function? on my service php file or on my gateway.php?

some progress here but it drives me crazy.

I have changed FLEX approach to call Zend_AMF. Instead of RemoteObject I tried to use NetConnection object and its call() method. 18 000 rows are returned within 14 secs. )) 6 times faster than with RemoteObject. Have you any idea what should be the reason for such as difference between RemoteObject and NetConnection when using Zend_AMF?

Boris

thanks for your answer. Of course I am aware of james ward benchmark from your tutorial and that was my primary reason to start to use AMF.

Meanwhile I have done some deeper exploration and realized that problem is definitely at client side. I tunded my PHP script by some echo current time instruction on its start and end to see in browser what time is consumed by php. Independently if I return XML string or AMF array time seems to be the same.

Additionaly I added some Aler.show instructions into FLEX to places where I call remote object method and also into result listener. Time between call a dispatching result handler linearly grows based on amount of returned data. As mentioned before for 18000 rows is 6 times slower than when using HTTPService and XML. Strange of that is that time between remote object call and result listener is out of my control. This time is a black box of AMF implementation in FLEX. Additionaly I have pure testing application which does nothing else just waitng until remote object recieved data.

I am sending framents of codes to show that I do nothing special.

in PHP i have class HotlineDS with public function getHotlineData

services-config.xml looks like

*

index.php contains code to manage Zend_AMF server and sets the class HotlineDS. Additinaly maps VO classes between flex and php. Same code you heve in tutorial just own classes.

It really seems that my FLEX has resource lack to unserialize large AMF data. Is there any parameter at OS, internet explorer, FLASH level which can help? I am using Windows Vista, IE.

Boris

To tell you the truth I am surprise by the results. Here is a test created by James Ward where you can test various ways of bringing data. I choose 20.000 rows with AMF and it was faster than Flex XML (E4X) 5.000 rows.
You can play around with the test here:
http://www.jamesward.com/census/

Coming back to your question, there are couple of reasons why AMF is faster than XML:
- serializing to XML takes more than to AMF
- the bandwidth could even 10 times less for AMF, because of the binary format and other compressions techniques (the same string is serialized only once, than referenced for example).

In conclusion, I don’t know what to say about your example. Maybe you could send me the project to have a look at it.

first of all thank you for that tutorial. I’m new at FLEX and it was really helpfull when starting to use it.

However tutorial is great I’m a bit surprised about AMF. Probably I do something wrong or not undersood AMF purpose properly because I have following problem.

Based on your tutorial I have built simple project to retrieve huge bunch of data (approx. 18000 rows, Zend_AMF in PHP) and provide them into FLEX application. It works but seems to be teribly slow (approx. 2 minutes until completed result set is available in FLEX). So I started to experiment with other options, meaning pure XML, and was surprised that same amount of data are retrived into FLEX within 20 secs.

As far as I understood AMF should be signficantly faster then XML but it seems it is not in my case. Or, and it is probably the case, I’m using AMF for wrong purpose. I understand that whole serialization proces of object takes some time and probably doesnt make sense to create value objects for 18000 rows just to retrieve them to FLEX. Might be XML should be used for such as purpose. If so what is purpose of AMF then?

Thank you for opinion.
Boris

Can you use ini_set()?
or maybe using set_include_path:
http://ro.php.net/manual/en/function.set-include-path.php

Thank you for the info! As I understood it, I need to change the endpoint URL.

All the best,
Chris

First of all you need to install Zend Framework on the live server, then you have to check that the URL for the RemoteObject are still OK (if you used absolute URL, you’ll have to change the value and recompile the application).

I followed your excellent tutorial and Zend AMF is working perfectly on my localhost. Now I have to deploy my site to the server. What do I need to do in order to deploy it to the server? What needs to be changed? I plan to use Host Gator. Thank you.

Best regards,
Chris

I followed your excellent tutorial and Zend AMF is working perfectly on my localhost. Now I have to deploy my site to the server. What do I need to do in order to deploy it to the server? What needs to be changed? I plan to use Host Gator.

first of all, congratulation for your Tuto !

My question is : is there a way to have a concurrency call issue on a service (not on a remote object, that can be resolved by the “concurrency” property)?

I mean : I have 2 components that have their own remote object. But these 2 remote objects call the same service.php.

It appears that when my 2 remote objects are called sensibly at the same time (on the preinitialize event of each component), the 2 service calls fail, but when one is called on preinitialize, and the second on creationComplete, just the second remote object fails…

Am I right that there could be a concurrency issue on that call?

If right, what workaround can I do please ?

Thx

When I saying testing the PHP class methods in browser, what I mean is to write couple of PHP lines that use your class and its methods (of course you have to set the PHP to show at least errors). And if everything works, you know that any problem might be it’s not from the PHP class.