PHP: Variable inside function use it outside function?

Question

Im including almost every page in page_protect(); . I have made an variable for the userid, $userid, with the user´s id. So it will be much easier for me to get the id than calling SESSION_id each time on every page.

How can i use a variable inside that function outside the function?

Bill Karwin · Accepted Answer · 2010-09-04 17:52:31Z

12

function page_protect()
{
  global $id;
  $id = 1234;
}

page_protect();
echo $id;

answered Sep 4, 2010 at 17:52

Bill Karwin

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2 Comments

Amal Over a year ago

I know this answer was written almost 4 years ago, but I'd like to add this as a note for future visitors: You shouldn't use globals anymore. They're evil.

Bill Karwin Over a year ago

@AmalMurali, agreed, it's better to use function parameters and return values. But let people walk before they run.

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