How to use an array from file A in file B

What is the right way to use an array from file A in file B?

When u use the example below, i get aan error (in Zend "Notice: Undefined variable: prefs") Then, if i var_dump $prefs, it shows me the correct array of type array.

Example:

FILE A

$prefs = array('test', 'anothertest');

FILE B

require_once('PATH_TO_FILE_A');
ec开发者_运维知识库ho $prefs[0];
//output: test

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If you don't like this warning message, you can set a NULL $prefs before including file.

$prefs = '';
require_once('PATH_TO_FILE_A');
echo $prefs[0];
//output: test

Zend is warning you because actually $prefs isn't declared on file B .

P.S. : Really, you don't need this. Just ignore that warning message.

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If you're asking if that's the right way to do that, then yes, it is. Your code should work as written.

When you require or include files into a PHP document, PHP treats them as if they were literally part of the master document. In your case, imagine copy and pasting the contents of File A into the top of File B. That's how PHP will treat it.