范围问题：在类中调用时，必需的文件无法访问变量

Question

$test = test;

class getFile{
    public function __construct($fileName){
    require $fileName;
  } 
}

$get = new getFile('file.php');

So file.php contains, echo $test;

If I was to call this outside the class eg

require 'test.php'; it would get $test fine But calling inside the class has obvious scope issues. How can I give the files required within the function access the to variables?

EDIT: ------------------------

I have multiple variables I wish this file to access (they are all dynamic based on the page, so adding x & y variables is impossible as they won't always be set) Rather than declaring each variable as globally accesible, is there no way to allow the required file in the class, access theese variables as if it wasn't?

Thank you guys for the feedback. Unfortunatly what I want does not seem possible, but you have inspired me to create a workaround that registers the most important variables I need my files to access as global.

Answer 1

public function __construct($fileName) {
    global $test;
    require $fileName;
} 

will work

Answer 2

Perhaps you could declare a global variable within your class, like so:

$text = 'test';

class getFile {
   public function __construct($fileName) {
      global $test;
      require $fileName;
   }
}

$get = new getFile('file.php');

Answer 3

PHP variables declared in the global scope are not automatically made available inside functions or methods. You have to explicitly declare them to be globals:

file.php:

    <?php
    global $test
    echo $test

or

public function __construct($filename) {
    global $test;
    require $filename;
}

would both fix the problem. Even though the file.php script appears to be global, as there's no function definition within it, it's still bound to the scope of the __construct() method in your object, which will NOT have $test global.

Answer 4

responding to your comment, i have workaround you may like

class getFile{
    public $files = Array();
    public function __construct($fileName){
        $this->files[] = $fileName;
    } 
}

$get = new getFile('file.php');

foreach($get->files as $file) require($file);

or maybe u can create static methods?

class getFile{
    public static $files = Array();
    public static function get($fileName){
        self::$files[] = $fileName;
    } 
}

getFile::get('file1.php');
getFile::get('file2.php');
getFile::get('file3.php');

foreach(getFile::$files as $file) require($file);