What are the potential consequences of using deprecated functions like session_register in PHP?

Using deprecated functions like session_register in PHP can lead to compatibility issues with newer versions of PHP, as these functions have been removed in recent versions. It is recommended to use the $_SESSION superglobal array to store session variables instead. To fix this issue, simply replace the session_register function with direct assignment to the $_SESSION array. 

// Deprecated way using session_register
session_start();
$var = "value";
session_register('var');

// Updated way using $_SESSION superglobal
session_start();
$var = "value";
$_SESSION['var'] = $var;

Keywords

deprecated functions session_register PHP error consequences

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