PHP中的get_file_contents和作用域问题

Question

When I'm developing websites, I use a very (very) simple system of creating pages:

//$_page is, of course, declared above the loop, just as $needed_modules is.

foreach ($needed_modules as $part) 
{
    global $_page;

    if (file_exists($part)) {

        $_page . file_get_contents($part);
    } else {
        //404
    }
}

echo $_page;

Now, the problem is that file_get_contents doesn't return anything: not false, not a string, nada (and the file is not empty).

Execution does go inside the if and $part (which corresponds to a filename with relative path) isn't just set, but it actually points to the file .

Why is it that $_page is empty (as opposed to being set , isset($_page) actually evaluates to TRUE )?

Edit: Error-reporting is on full throttle on my server, and the logs show nothing out of the ordinary.

Answer 1

You are not saving the return value of file_get_contents :

$_page . file_get_contents($part);

I think you meant to say:

$_page .= file_get_contents($part);

Answer 2

You're not doing anything with the returned value. Try this:

$_page .= file_get_contents($part);