codeigniter_tutorial

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2. Installing CodeIgniter CodeIgniter It is very easy to install CodeIgniter. Just follow the steps given below: Step-1: Download the CodeIgniter from the link http://www.<strong>codeigniter</strong>.com/download Step-2: Unzip the folder. Step-3: Upload all files and folders to your server. Step-4: After uploading all the files to your server, visit the URL of your server, e.g., www.domain-name.com. On visiting the URL, you will see the following screen: 3
3. Application Architecture CodeIgniter The architecture of CodeIgniter application is shown below. Figure: CodeIgniter Application Flowchart As shown in the figure, whenever a request comes to CodeIgniter, it will first go to index.php page. In the second step, Routing will decide whether to pass this request to step-3 for caching or to pass this request to step-4 for security check. If the requested page is already in Caching, then Routing will pass the request to step-3 and the response will go back to the user. If the requested page does not exist in Caching, then Routing will pass the requested page to step-4 for Security checks. Before passing the request to Application Controller, the Security of the submitted data is checked. After the Security check, the Application Controller loads necessary Models, Libraries, Helpers, Plugins and Scripts and pass it on to View. The View will render the page with available data and pass it on for Caching. As the requested page was not cached before so this time it will be cached in Caching, to process this page quickly for future requests. 4
Page 2 and 3: CodeIgniter About the Tutorial Code
Page 4 and 5: CodeIgniter Updating a Record .....
Page 6 and 7: 1. CodeIgniter - Overview CodeIgnit
Page 10 and 11: CodeIgniter Directory Structure The
Page 12 and 13: CodeIgniter and classes. It is reco
Page 14 and 15: 5. CodeIgniter - Basic Concepts Cod
Page 16 and 17: CodeIgniter Visiting the third URI
Page 18 and 19: CodeIgniter The following flowchart
Page 20 and 21: CodeIgniter As shown in the above f
Page 22 and 23: CodeIgniter Reserved Routes $route[
Page 24 and 25: 6. CodeIgniter - Configuration Code
Page 26 and 27: CodeIgniter ); You can simply switc
Page 28 and 29: 7. Working with Database CodeIgnite
Page 30 and 31: CodeIgniter Finally, the update() f
Page 32 and 33: CodeIgniter function __construct(){
Page 34 and 35: CodeIgniter parent::__construct();
Page 36 and 37: CodeIgniter echo form_close(); ?>
Page 38 and 39: 8. CodeIgniter - Libraries CodeIgni
Page 40 and 41: CodeIgniter Create New Library Whil
Page 42 and 43: 9. Error 9. Handling CodeIgniter Ma
Page 44 and 45: 10. File Uploading CodeIgniter Usin
Page 46 and 47: CodeIgniter if ( ! $this->upload->d
Page 48 and 49: 11. Sending Email CodeIgniter Sendi
Page 50 and 51: CodeIgniter Syntax Parameters Retur
Page 52 and 53: CodeIgniter $this->email->subject('
Page 54 and 55: 12. Form Validation CodeIgniter Val
Page 56 and 57: CodeIgniter } } Add the following l
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CodeIgniter less_than less_than_equ
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13. Session Management CodeIgniter
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CodeIgniter $this->load->library('s
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CodeIgniter //redirect to home page
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15. Tempdata CodeIgniter In some si
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CodeIgniter Click Here to add temp
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16. Cookie Management CodeIgniter C
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CodeIgniter } public function delet
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CodeIgniter Syntax html_escape($var
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18. Page Caching CodeIgniter Cachin
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19. Page Redirection CodeIgniter Wh
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20. Application Profiling CodeIgnit
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21. Benchmarking CodeIgniter Settin
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CodeIgniter The above URL will enab
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CodeIgniter public function index()
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23. Internationalization CodeIgnite
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CodeIgniter //Load the view file $t
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CodeIgniter Copy the below given co
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CodeIgniter $this->db->query($sql,
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