What are the advantages and disadvantages of using global variables in PHP for configuration settings like language?

Using global variables for configuration settings like language in PHP can make it easy to access these settings throughout your codebase. However, it can lead to potential issues such as variable scope conflicts, difficulty in tracking changes, and security vulnerabilities if not handled properly. 

// config.php
global $language;
$language = 'en';

// index.php
include 'config.php';
echo $language; // Output: en

Keywords

global variables PHP configuration settings language disadvantages

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