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Planet PHP

• 

  PHP in Action - Chapter 7, Design Patterns. Part - II

  Fetched: February 28th, 2007, 3:30am MST by Zend Developer Zone | Items Tagged: ...

  Tags:  php_patterns  

  If you’ve been anxiously awaiting part two of this series then your wait is over. Here’s a short introduction to the section part of this series written by the author of the book, Dagfinn Reiersol. I had the privilege of meeting Dagfinn at phpuk last week. Below the introduction is the link I know you’ve been waiting for.

  In this section we’ll learn about two patterns: Decorators and Null Objects.
  
  A Decorator is another kind of wrapper around a class. It is used to add responsibilities to a class without burdening the class with additional methods.
  
  A Null Object is an object that participates in the design like an ordinary object, but doesn’t actually do anything. It keeps the OO machinery working smoothly with no
  special handling of cases in which nothing needs to be done.

  And now, the link. PHP in Action Part 2 of 3

  Enjoy!

  =C=

• 

  Multi-file upload using SWFUpload

  Fetched: February 23rd, 2007, 6:30pm MST by Evert Pot

  Tags:  php_flash  

  

  I heard a few times in the past about SWFUpload and recently I decided to try it out..

  Basically SWFUpload is a 0x0 pixel swf that allows you to leverage Flash 8's upload mechanism through html/javascript. Not only can you let your users select multiple files to upload, it also allows you to catch the progress nicely, without a combination of nasty hacks with javascript, hidden frames and server-side callbacks.. It it distributed under the very permissive MIT license.

  However, the integration went pretty bad.. SWFUpload is a very complete package and includes a big javascript wrapper, a bunch of examples and SWFObject, which is used to embed the object in the html using javascript and examples. For some reason it didn't work for me all, I assume there was probably some collision with my existing javascript.. and I don't really like SWFObject, as it has to my opinion overkill written all over it..

  So, I peaked into the javascript, only to find out that just using the swf you have a lot of power already, you can specify your javascript callback functions straight from though the flashvars.. Neat! The flashvars look something like this:

  <param name="FlashVars" value="uploadBackend=%2Fservices%2Fupload&uploadStartCallback=Uploader.onStart&uploadProgressCallback=Uploader.onProgress&uploadCompleteCallback=Uploader.onComplete&uploadCancelCallback=Uploader.onCancel&uploadErrorCallback=Uploader.onError&allowedFiletypes=%2A.gif%3B%2A.jpg%3B%2A.mp3&allowedFilesize=204800&uploadQueueCompleteCallback=Uploader.onQueueComplete" />

  Very easy to use.. The only thing I really miss is the fact that selecting files and uploading is a combined step.. Not really handy in terms of usability..

  My feature requests:

  1. Have a separate method for selecting files before upload.
  2. Allow the ability to replace the file upload list, but also append to the list.
  3. Have the callbacks return index numbers for the files.. Right now the only unique property you get is the filename, and there could be situations where 2 files with the same name are uploaded (rare, but still..).
  4. Implement a method for canceling the upload progress.
  5. Implement a method to remove a file from the upload queue.

  The other problem I ran into using flash uploads are http cookie bugs.. I covered that in my last post.

• 

  Sharing complex objects between PHP and Flash - Part II

  Fetched: February 23rd, 2007, 2:30pm MST by Manfred`s Diary

  Tags:  php_flash  

  This is part 2 of my SOAP series. In the 1. part I started with a basic example of creating a simple PHP Soap Server with the PEAR package Services_Webservice. In this part I will share complex objects between PHP and Flash.

  So I basically created 3 PHP classes:

• Bookstore/Author which defines a single author
• Bookstore/Book which defines a book plus a Bookstore_Author[] Array
• Bookstore and finally the Bookstore service

  Now calling the webservice in the browser we´ll see that everything works like expected. The Webservice should serve 1 function “getAllBooks()” which returns a list of Book classes which hold an array of Bookservice_Author[] classes within its properties.

  

  Quite simple, no? This took me less then 20 minutes. We now have a full Webservice running! Next step is to connect Flash against it and see if it can handle these complex types. Below is a little Actionscript client which makes use of the mx.services package. Not only we use the WebService class, we also add the Log class which helps you analyse WebServices.

  Actionscript:
  1. import mx.services.*;
  2.  
  3. var bookStoreLog:Log = new Log();
  4. bookStoreLog.onLog = function(txt:String) {
  5.   trace(txt);
  6. }
  7.  
  8. var bookStore:WebService = new WebService(
  9.   "http://services.dschini.org/Bookstore.php?WSDL",
  10.   bookStoreLog);
  11. bookStoreAllBooks = bookStore.getAllBooks();
  12. bookStoreAllBooks.onResult = function(result:Object) {
  13.   trace(result);

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