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Diffstat (limited to 'user_guide/general/creating_libraries.html')
| -rw-r--r-- | user_guide/general/creating_libraries.html | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/user_guide/general/creating_libraries.html b/user_guide/general/creating_libraries.html index b7b66f0c1..a44ec47b7 100644 --- a/user_guide/general/creating_libraries.html +++ b/user_guide/general/creating_libraries.html @@ -28,7 +28,7 @@ <div id="masthead"> <table cellpadding="0" cellspacing="0" border="0" style="width:100%"> <tr> -<td><h1>CodeIgniter User Guide Version 2.0.0</h1></td> +<td><h1>CodeIgniter User Guide Version 2.0.2</h1></td> <td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td> </tr> </table> @@ -58,7 +58,7 @@ Creating Libraries <h1>Creating Libraries</h1> <p>When we use the term "Libraries" we are normally referring to the classes that are located in the <kbd>libraries</kbd> -directory and described in the Class Reference of this user guide. In this case, however, we will instead describe how you can create +directory and described in the Class Reference of this user guide. In this case, however, we will instead describe how you can create your own libraries within your <dfn>application/libraries</dfn> directory in order to maintain separation between your local resources and the global framework resources.</p> @@ -75,7 +75,7 @@ to an existing library. Or you can even replace native libraries just by placing <p>The page below explains these three concepts in detail.</p> -<p class="important"><strong>Note:</strong> The Database classes can not be extended or replaced with your own classes. All other classes are able to be replaced/extended.</p> +<p class="important"><strong>Note:</strong> The Database classes can not be extended or replaced with your own classes. All other classes are able to be replaced/extended.</p> <h2>Storage</h2> @@ -88,24 +88,24 @@ they are initialized.</p> <ul> <li>File names must be capitalized. For example: <dfn>Myclass.php</dfn></li> -<li>Class declarations must be capitalized. For example: <kbd>class Myclass</kbd></li> +<li>Class declarations must be capitalized. For example: <kbd>class Myclass</kbd></li> <li>Class names and file names must match.</li> </ul> <h2>The Class File</h2> -<p>Classes should have this basic prototype (Note: We are using the name <kbd>Someclass</kbd> purely as an example):</p> +<p>Classes should have this basic prototype (Note: We are using the name <kbd>Someclass</kbd> purely as an example):</p> -<code><?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<code><?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); <br /><br /> class Someclass {<br /> <br /> - function some_function()<br /> + public function some_function()<br /> {<br /> }<br /> }<br /><br /> -?></code> +/* End of file Someclass.php */</code> <h2>Using Your Class</h2> @@ -136,19 +136,19 @@ $this->load->library('Someclass', <kbd>$params</kbd>);</code> <p>If you use this feature you must set up your class constructor to expect data:</p> -<code><?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');<br /> +<code><?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');<br /> <br /> class Someclass {<br /> <br /> - function __construct($params)<br /> + public function __construct($params)<br /> {<br /> // Do something with $params<br /> }<br /> }<br /><br /> ?></code> -<p class="important">You can also pass parameters stored in a config file. Simply create a config file named identically to the class <kbd>file name</kbd> -and store it in your <dfn>application/config/</dfn> folder. Note that if you dynamically pass parameters as described above, +<p class="important">You can also pass parameters stored in a config file. Simply create a config file named identically to the class <kbd>file name</kbd> +and store it in your <dfn>application/config/</dfn> folder. Note that if you dynamically pass parameters as described above, the config file option will not be available.</p> @@ -202,7 +202,7 @@ etc. <h2>Replacing Native Libraries with Your Versions</h2> <p>Simply by naming your class files identically to a native library will cause CodeIgniter to use it instead of the native one. To use this -feature you must name the file and the class declaration exactly the same as the native library. For example, to replace the native <kbd>Email</kbd> library +feature you must name the file and the class declaration exactly the same as the native library. For example, to replace the native <kbd>Email</kbd> library you'll create a file named <dfn>application/libraries/Email.php</dfn>, and declare your class with:</p> <code> @@ -222,12 +222,12 @@ class CI_Email {<br /><br /> <h2>Extending Native Libraries</h2> <p>If all you need to do is add some functionality to an existing library - perhaps add a function or two - then -it's overkill to replace the entire library with your version. In this case it's better to simply extend the class. +it's overkill to replace the entire library with your version. In this case it's better to simply extend the class. Extending a class is nearly identical to replacing a class with a couple exceptions:</p> <ul> <li>The class declaration must extend the parent class.</li> -<li>Your new class name and filename must be prefixed with <kbd>MY_</kbd> (this item is configurable. See below.).</li> +<li>Your new class name and filename must be prefixed with <kbd>MY_</kbd> (this item is configurable. See below.).</li> </ul> <p>For example, to extend the native <kbd>Email</kbd> class you'll create a file named <dfn>application/libraries/</dfn><kbd>MY_Email.php</kbd>, and declare your class with:</p> @@ -243,7 +243,7 @@ class MY_Email extends CI_Email {<br /><br /> <code> class MY_Email extends CI_Email {<br /> <br /> - function __construct()<br /> + public function __construct()<br /> {<br /> parent::__construct();<br /> }<br /> @@ -252,12 +252,12 @@ class MY_Email extends CI_Email {<br /> <h3>Loading Your Sub-class</h3> -<p>To load your sub-class you'll use the standard syntax normally used. DO NOT include your prefix. For example, +<p>To load your sub-class you'll use the standard syntax normally used. DO NOT include your prefix. For example, to load the example above, which extends the Email class, you will use:</p> <code>$this->load->library('<kbd>email</kbd>');</code> -<p>Once loaded you will use the class variable as you normally would for the class you are extending. In the case of +<p>Once loaded you will use the class variable as you normally would for the class you are extending. In the case of the email class all calls will use:</p> |