从类外部访问变量

Question

I'm having an issue trying to figure out an effective of doing this. Suppose I have a language file called fr.php wher some variables exist in there as:

$lang["W_TYPE"]["COMPLETE"] = "Completé";
$lang["W_TYPE"]["INCOMPLETE"] = "Incomplet";
$lang["W_TYPE"]["BO"] = "En attente";

Now suppose I have a method in one of my classes that needs to access some of these variables.

public function getCompletion($string = true)
{
    $x = $this->COMPLETION;
    if($string)
    {
        echo $lang["W_TYPE"]["COMPLETE"];
        if($x==self::ORDER_COMPLETE)
        {
            return "<font class='jobComplete'>".$lang["W_TYPE"]["COMPLETE"]." &#x2713;</font>";
        }
        elseif($x==self::INCOMPLETE)
        {
            return "<font class='jobIncomplete'>".$lang["W_TYPE"]["INCOMPLETE"]."...</font>";
        }
        elseif($x==self::BACK_ORDER)
        {
            return "<font class='backOrder'>".$lang["W_TYPE"]["BO"]."...</font>";
        }
    }
    else
    {
        return $x;  
    }
}   

The above is not possible of course, but I've actually run out of options on how to do something like this in the most effective way. Any ideas?

Answer 1

Assuming your class looks somewhat like this:

<?php
class CompleteClass
{

    function __construct($lang)
    {
        $this->lang = $lang;
    }

    public function getCompletion($string = true)
    {
        $lang = $this->lang;
        $x    = $this->COMPLETION;
        if ($string) {
            echo $lang["W_TYPE"]["COMPLETE"];
            if ($x == self::ORDER_COMPLETE) {
                return "<font class='jobComplete'>" . $lang["W_TYPE"]["COMPLETE"] . " &#x2713;</font>";
            } elseif ($x == self::INCOMPLETE) {
                return "<font class='jobIncomplete'>" . $lang["W_TYPE"]["INCOMPLETE"] . "...</font>";
            } elseif ($x == self::BACK_ORDER) {
                return "<font class='backOrder'>" . $lang["W_TYPE"]["BO"] . "...</font>";
            }
        } else {
            return $x;
        }
    }
}
?>

You can get the language file from the constructor while creating the class.

You should also have fr.php , as well as all your other language files return the array at the end. That way it can be utilized by the main script without having to know the variable name in question.

fr.php

$lang["W_TYPE"]["COMPLETE"] = "Completé";
$lang["W_TYPE"]["INCOMPLETE"] = "Incomplet";
$lang["W_TYPE"]["BO"] = "En attente";
return $lang;

You can create the class in another file like this now:

<?php
    $lang = require_once 'fr.php';
    $completeClass = new CompleteClass($lang);
    echo $completeClass->getCompletion(true);
?>

Answer 2

fr.php Notice the return $lang;

$lang["W_TYPE"]["COMPLETE"] = "Completé";
$lang["W_TYPE"]["INCOMPLETE"] = "Incomplet";
$lang["W_TYPE"]["BO"] = "En attente";
return $lang;

Other file Notice the $lang = require_once 'fr.php';

public function getCompletion($string = true)
{
    $lang = require 'fr.php';
    $x = $this->COMPLETION;
    if($string)
    {
        echo $lang["W_TYPE"]["COMPLETE"];
        if($x==self::ORDER_COMPLETE)
        {
            return "<font class='jobComplete'>".$lang["W_TYPE"]["COMPLETE"]." &#x2713;</font>";
        }
        elseif($x==self::INCOMPLETE)
        {
            return "<font class='jobIncomplete'>".$lang["W_TYPE"]["INCOMPLETE"]."...</font>";
        }
        elseif($x==self::BACK_ORDER)
        {
            return "<font class='backOrder'>".$lang["W_TYPE"]["BO"]."...</font>";
        }
    }
    else
    {
        return $x;  
    }
}