<?php
/**
* Class used to work with the PHP modules.
* This class cannot be extended anymore.
*
* @final
*/
final class Extensions
{
/**
* private member to hold the PHP loaded extensions
*
* @var array
*/
private $loadedExtensions;
/**
* Constructor
* Used to load the PHP extensions into the private member
*
* @return Extensions
*/
public function Extensions()
{
// load into the private member the PHP loaded extensions
$this->loadedExtensions = get_loaded_extensions();
}
/**
* This function is used to find out if an extension has been loaded.
* If not, try to load it at runtime.
*
* @param string $extension
* @return boolean TRUE if the extension has been loaded
* @return boolean FALSE if the extension is not available/could not be loaded
* @throws ExifNotFound Exception
*/
public function isLoaded($extension)
{
// if the extension has not been loaded,
// try to load it at runtime
if (!extension_loaded($extension) && !@dl($extension))
{
// throw the exception
throw new ExifNotFound("The EXIF module could not be loaded !");
// althought the script will not reach this point in case of exception throwing,
// for the sake of the return, put the false value
return false;
}
else
{
// either the module is already loaded or has been loading at runtime,
// return true
return true;
}
}
}
?>
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