How to create custom library in CodeIgniter

We are normally referring to the classes that are located in the libraries directory.

You can create your own libraries within your application/libraries directory.

Here

1)You can replace native and extend libraries.

2) You can create new libraries.

If You want to create library. then it place in application/libraries in codeigniter.

When you create new library there 3 thing for naming conversion.

1. File names must be capitalized. For example:  Myexample.php
2. Class declarations must be capitalized. For example:  class Myexample
3. Class names and file names must match

Example OF custom library

create directory application/libraries/Pro.php file

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); ?>

<?php

class Pro{

public function show_me(){

   

    return "Don Return";

 }

}

?>

this library use in your controller

here i am create my controller application\controllers\Test.php here initialize library.

class Test extends CI_Controller

{

    function index()

    {

     

       $this->load->library('pro'); // initialize the library

    echo $this->pro->show_me();

    }

   

   

}

?>

useing of your class

$this->load->library('pro'); // initialize the library

call you function create in library like this echo $this->pro->show_me();

check it result.

you can pass parameter in your library.

application/libraries/Pro.php create this function.

public function show_hello_world($param){

   

    if($param['color']=="red"){

     

       echo "hello World Red";

     

    }elseif($param['color']=="blue"){

     

       echo "Hello World blue";

     

    }else{

echo “Hello World”;

}

?>

here i am create show_hello_world function and Pass value $param.

check it your codeinter.

in Your test Controller. application\controllers\Test.php

function index()

    {

     

       $param = array("color"=>"blue");

       $this->load->library('pro');

     

                 $menu = new pro;

               

                 $data['menu'] = $menu->show_menu();

               

                 echo $data['menu'];

   

    }