Best and correct solution for delete variables?

[Ervin]

What is the best and correct solution for delete variables?

I run script d:\php\php.exe -f script.php on win11. This script run 24h.

If the best and correct solution:

for ($zanke = 1; ; $zanka++)
{
	set_time_limit (0);
	$data=file_get_contents("http://localhost:5897/x/query.cgi?q=status");
	if(preveri($data))
	{
		shrani($data);
		poslji($data);
	}
	sleep (5);
	flush();
	$data="";
	$zanka = 0;
}

or:

for ($zanke = 1; ; $zanka++)
{
	set_time_limit (0);
	$data=file_get_contents("http://localhost:5897/x/query.cgi?q=status");
	if(preveri($data))
	{
		shrani($data);
		poslji($data);
	}
	sleep (5);
$vars = array_keys(get_defined_vars());
for ($i = 0; $i < sizeOf($vars); $i++) {
 unset($$vars[$i]);
}
unset($vars,$i);

ali pa:
$vars = array_keys(get_defined_vars());
foreach($vars as $var) {
 unset(${"$var"});
}
	$zanka = 0;
}

Thank you for help!

[requinix]

Don't.

PHP isn't a low-level language like C. You don't have to manage memory like that. PHP has some very smart internal logic and is perfectly capable of handling creating and destroying variables on your behalf. So let it do what it knows how to do.