coding style - Is it considered good practice to unset PHP variables in this scenario? -


right now, using modified version of oscommerce has lot of variables declared in application_top.php file (which included when going every file on website first thing).

so instance, if go mypage.php, application_top.php included in top.

i want of variables defined application_top.php file accessible inside mypage.php file, since used temporary calculations or whatever, whereas others meant accessible page.

what best practise? unset variables meant used in local scope after use, , leave variables meant accessed alone?

use of classes best way, , passing variables need

though assume major rewrite ?

what this

$vars = array_keys(get_defined_vars()); $whitelist = array("var1", "var2" ...); $vars = array_diff(array_keys($whitelist), $vars); foreach($vars $var) {     unset($$var);  }

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