What are the potential issues with relying on "register_globals" for variable initialization in PHP scripts?

Relying on "register_globals" for variable initialization in PHP scripts can lead to security vulnerabilities, as it allows external input to automatically create variables in the script. This can make the code more prone to injection attacks and can lead to unexpected behavior. It is recommended to disable "register_globals" and manually initialize variables to ensure code security. 

// Disable register_globals in php.ini
// Set variables manually to ensure security
$var1 = isset($_GET['var1']) ? $_GET['var1'] : '';
$var2 = isset($_POST['var2']) ? $_POST['var2'] : '';

Keywords

register_globals variable initialization security vulnerability global variables deprecated

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