What are the difference between $this->data->total_pages and $data['total_pages'] - Printable Version +- CodeIgniter Forums (https://forum.codeigniter.com) +-- Forum: Archived Discussions (https://forum.codeigniter.com/forumdisplay.php?fid=20) +--- Forum: Archived Development & Programming (https://forum.codeigniter.com/forumdisplay.php?fid=23) +--- Thread: What are the difference between $this->data->total_pages and $data['total_pages'] (/showthread.php?tid=26687) |
What are the difference between $this->data->total_pages and $data['total_pages'] - El Forum - 01-20-2010 [eluser]shinokada[/eluser] Beginner's question. Could anyone explain the differences between Code: $this->data->total_pages My understanding is that the first one is an object way and second way is an array way. Am I right? Then what is $this in $this->data->total_pages? When do I need to use $this->..? Do I have to use it whenever I use it as an object? I thank you in advance. What are the difference between $this->data->total_pages and $data['total_pages'] - El Forum - 01-20-2010 [eluser]danmontgomery[/eluser] $this is the object in the context that it's being called used (as in "this" instance of the class), and you can only use $this in object methods. Code: class blog_object { http://php.net/manual/en/language.oop5.php What are the difference between $this->data->total_pages and $data['total_pages'] - El Forum - 01-21-2010 [eluser]shinokada[/eluser] Thanks for your reply. Why $this->data->total_pages is not $this->total_pages? What is the reason to add data? What are the difference between $this->data->total_pages and $data['total_pages'] - El Forum - 01-21-2010 [eluser]bretticus[/eluser] You really need to read that OOP link. Hopefully I can provide some basic insight if you understand OOP in PHP well enough. CodeIgniter runs from one index.php file. For this to work, CI has to load a core object (objects are also called classes.) That core object's properties and methods can be conveniently referred to in your subsequent code using PHP's built in $this variable. That's because all the subsequent classes (objects) are an extension of the core object (see what I mean about reading up on OOP?) It just so happens that CI can load a data object to the core object called data with all the properties and methods you need to do database transactions (thus, $this->data.) total_pages from $this->data->total_pages is simply a property of the data object (although it would appear that it is an extended version of that class since I am not aware of a total_pages property.) I have no idea what it refers to without context. So I can't answer: Quote:Why $this->data->total_pages is not $this->total_pages? As for $data['total_pages']... That is just how you'd refer to the value stored in an array called data with an associate key called total_pages. The data array in CI convention (can be called whatever you like) is most often used to pass an array of data to a view. What are the difference between $this->data->total_pages and $data['total_pages'] - El Forum - 01-22-2010 [eluser]shinokada[/eluser] @bretticus, thank you for your reply and time. I appreciate it. The code I am studying is pryrocms by Phil. He uses this $this->data->total_pages in controller and in a view as well. In view, Code: <li> Is it common to do it? I thought $data['total_page'] in controller and use it as $total_page is more CI way. Is there any benefit using $this->data->total_pages rather than $data['total_page']? |