What are the implications of relying on register_globals in PHP code?

Relying on register_globals in PHP code can lead to security vulnerabilities as it allows external input to automatically create global variables, opening the door to potential injection attacks. To solve this issue, it is recommended to disable register_globals in the PHP configuration and instead use superglobal arrays like $_GET, $_POST, and $_SESSION to access user input. 

// Disable register_globals in php.ini
// Use superglobal arrays to access user input
$myVar = $_POST['myVar'];

Keywords

register_globals security vulnerability global variables deprecated feature data leakage

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