How to implement a class using namespaces in PHP - php

Question

I am having trouble implementing a particular class in PHP. I want to use Anthony Ferrara's RandomLib library in my Zend Framework application (you can find it here.)
I've been programming in PHP for a few years now, so I know my way around it for the most part. But I have to admit that I'm kind of clueless when it comes to using classes that implement namespaces. Here's what I've got in my code:
public static function generateToken()
{
require_once 'RandomLib/Factory.php';
$factory = new \RandomLib\Factory;
$generator = $factory->getMediumStrengthGenerator();
return $generator->generate(16);
}
Unfortunately, I'm getting the following error:
Fatal error: Class 'SecurityLib\AbstractFactory' not found in C:\xampp\php\includes\RandomLib\Factory.php on line 30
Like I said, I really have no idea what's going on here. I don't know if I'm supposed to use some kind of use statement in my class or not.

Answer 1

With autoloader with ZF 1.*, asuming you put your factoru into application_name/libs/RandomLibFactory.php as RandomLibFactory class it should look like this:
public static function generateToken() {
$factory = $locator = new RandomLibFactory();
$generator = $factory->getMediumStrengthGenerator();
return $generator->generate(16); }

Answer 2

For anyone whom spent lot of time and didn't find a clue, tearing his hairs apart and hitting the wall to death:
you need to have an autoloader as in "bootstrap.php" in the folder "test/", to manage every namespace... or you need to link every file in the folder which is not very smart. See spl_autoload_register in php.net
you just downloaded RandomLib, which depends on another library (the author didn't mentioned it): so you need SecurityLib (it has the same folder structure: copy what is inside "lib/" into the other "lib/" folder.
example of autoloader for a script calling from the root folder "RandomLib-1.1.0/" (see that 'lib' in the $path ?):
spl_autoload_register(function ($class) {
$nslen = strlen(__NAMESPACE__);
if (substr($class, 0, $nslen) != __NAMESPACE__) {
//Only autoload libraries from this package
return;
}
$path = substr(str_replace('\\', '/', $class), $nslen);
$path = __DIR__ . '/lib/' . $path . '.php';
if (file_exists($path)) {
require_once $path;
}
});
now you are set and can use classes freely without worrying about including or requiring files.
$factory = new RandomLib\Factory;
$generator = $factory->getLowStrengthGenerator();
//$generator = $factory->getMediumStrengthGenerator();
//$generator = $factory->getHighStrengthGenerator();
$randomStringLength = 16;
$randomStringAlphabet = '0123456789#abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+/';
$randomString = '';
for ($i=0;$i<10;$i++){
$randomString = $generator->generateString( $randomStringLength , $randomStringAlphabet);
echo $randomString.'<br>';
}

Answer 3

I too tore out many hairs, before I found the solution for my Windows machine.
I downloaded the Windows version of Composer (which I had barely heard of let alone used).
I used it to install RandomLib (as shown in the Install section of the instructions - use a command box in Windows)
This generated a vendor folder containing a composer folder an ircmaxell folder and an autoload.php file; these I uploaded to a suitable place in my website The vendor directory includes both the random-lib and the - required - security-lib libraries.
In the program in which I wanted to generate random text I included that autoload.php (preceded by suitable directory pointers)
Then I was good to go to create a factory, generator and string as shown in the library's instructions