What are the best practices for updating code from session_register() to $_SESSION[] in PHP?

When updating code from `session_register()` to `$_SESSION[]` in PHP, it is important to note that `session_register()` is deprecated as of PHP 5.3.0 and removed in PHP 5.4.0. To update the code, simply replace all instances of `session_register()` with `$_SESSION[]` and assign the variable value directly to `$_SESSION[]`. 

// Before updating
session_start();
$var = "value";
session_register("var");

// After updating
session_start();
$var = "value";
$_SESSION['var'] = $var;

Keywords

session_register $_SESSION[] PHP migration deprecated

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