在PHP中无法组合strpos和！empty，为什么？

Question

I have two lines in PHP that if I combine causes my page to stop loading...Unfortunately, I have no error message using error_reporting(E_ALL | E_STRICT); ini_set('display_errors', true); error_reporting(E_ALL | E_STRICT); ini_set('display_errors', true); , and nothing in my apache error.log file.

this works:

$user_setup = strpos($_SESSION['user'], "@");
if (!empty($user_setup)) {....

But, this does not:

if (!empty(strpos($_SESSION['user'], "@"))) {....

Is there something about the strpos function causing this to not work?

Thanks for your help!

Answer 1

empty() is actually a language construct not a function. Additionally it won't take anything less than a variable as an argument.