Description:
------------
fgets expects a literal for the buffer size argument. It hangs until the max_execution_time timeouts, when you give it a variable.



Reproduce code:
---------------
$url = 'http://www.google.com/';
if (($handle = fopen($url, 'r')) === false) {
    die('Couldnt open url '.$url.'.');
}
while (feof($handle) === false) {
    $text = fgets($handle, $kBufferSize); // doesn't work
    //$text = fgets($handle, 512); // works
    echo($text);
}
fclose($handle);

Expected result:
----------------
The google homepage (i.e. the given url)

Actual result:
--------------
Timeout on max_execution_time.