[library] Loader

[eluser]Peter Goodman[/eluser]
For some reason it seems that CI will include a library more than once if $this->load->library() is called for the same library. There are checks an balances in the code; however, they don't seem to be enough. This library provides a simple solution to the problem, and is something which I suggest should be implemented into CodeIgniter in the future.

Take note of the <subclass_prefix>

Code:

<?php

/**
* Allow one to load the same library multiple times without
* the possibility of having an error that the class has already
* been declared.
*/

class <sublcass_prefix>Loader extends CI_Loader {
    
    static private $loaded = array();
    
    /**
     * We don't actually need to know the class name or anything special
     * about it such as where it comes from. All that matters is that a
     * class with this name or something similar has been loaded.
     */
    public function _ci_load_class($class, $params = NULL) {
        if(!in_array($class, self::$loaded)) {
            
            self::$loaded[] = $class;
            
            return parent::_ci_load_class($class, $params);
        }
        return;
    }
}

[eluser]sophistry[/eluser]
I remember reading something about this in the 1.5.4 update:

The link to the changelog on SVN

It says:

Fixed a bug that was allowing multiple load attempts on extended classes.

Is this the issue you are talking about?

[eluser]Peter Goodman[/eluser]
Yes, I have encountered this issue at work and I'm not 100% sure if we're using 1.5.4 or 1.5.3.