What potential issues can arise when using REGISTER GLOBALS in PHP?

Using REGISTER GLOBALS in PHP can lead to security vulnerabilities such as injection attacks and data manipulation. To solve this issue, it is recommended to disable REGISTER GLOBALS in the php.ini file and instead use superglobal arrays like $_GET, $_POST, and $_SESSION to access form data and session variables. 

// Disable REGISTER GLOBALS in php.ini file
// Use superglobal arrays like $_GET, $_POST, and $_SESSION instead

Keywords

security vulnerabilities variable scope data manipulation deprecated feature global variables

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