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ArcanisGK507
Asked: 2022-09-08 09:52:10 +0800 CST 2022-09-08 09:52:10 +0800 CST

Implementation of use for dynamic namespace and compliance with PSR 4/12

  • 772

I am implementing a autoloadergiven the following scenario:

Structure:

There is an X Application that through FTP generates a structure of directories and php files: Example:

enter image description here

Where:
index.php: would be the controller.
libs: is the directory where the X application connects and creates the structure.
p_xxxx: is the directory for each form, from 0001to 9999.
process.php: is the file phpwhere the logic of the form is developed p_xxx.
lista.php: is the file phpwhere the html view of the form is developed p_xxx.

According to the documentation, for a class file with this structure:
process.php

<?php

namespace Prueba\Dinamico\p_0001;

class Process
{
    public function Ejemplo(){
        echo 'process: p_0001';
    }
}

my index should look like this:

index.php

<?php

namespace Prueba\Dinamico;

/**
 * En esta sección es donde se agrega el formulario:
 * p_0001
 * pero se supone que este valor se recibe desde una variable de sesión del usuario:
 * $_SESSION['currentForm']='p_0001';
 *
 * entonces la linea de código del use no logro implementarla de forma dinámico:
 * y que cumpla con el PSR-4 y 12
 *
 */

use Libs\p_0001\Lista;
spl_autoload_register(function ($clase) {
    $file = strtolower(str_replace('\\', DIRECTORY_SEPARATOR, $clase)).'.php';
    if(file_exists($file)){
        require_once $file;
    }else{
        echo 'no se pudo cargar la Librería para esta Gestión.';
        die;
    }
});

$EjemploClase = new Lista();
$EjemploClase->Ejemplo();

The problem

As you can see, use Libs\p_0001\Lista;it's static. I don't know how to access, for example p_0003, the needed node, implementing $_SESSION['currentForm']which is where the value of the form is saved, e.g.: p_0003.

I don't know how to implement this and at the same time maintain the PSR 4 and 12 standard, since if I use or implement Magic Methods, the IDE does not recognize what is programmed as it is a value that changes at run time.

php

1 Answers

  1. Best Answer

    So far I have done research on this topic and php does not provide support for building namespaces in real time: Example:

    use $variable1.'/'.$variable2.'/'.$variable3.'/'.$variable4.'/' as ClassFoo;

    There is no way for something like this to work right now. so how to fix this; the only way is by creating the instance from a variable:

    $formulario = 'P_0001'; //this value must be dynamic from $_POST
$class      = __NAMESPACE__ . '\\Libs\\' . $formulario . '\\Proceso';
//$classInstance = (new ReflectionClass($class))->newInstance();
//$classInstance::getInstance()->Ejemplo();

$classInstance = new $class();
$classInstance->Ejemplo();

    No problem was found running this last example. The problem then in the development environment is with the tools:

    1- Sublime Text 3 and 4: the go to definition option works correctly in the method Ejemplo()based on a full text search.
    2- PHPStorm: does not provide support to go to the definition or where the method is implemented.

    Note: I appreciate those who leave in the comments tests with other editors or IDE.

    • 0