PHP entry level question

I expect the output of "inside test 开发者_如何学JAVAfinish" when loaded the index.php file instead I got nothing.

index.php:

<?php
@include_once('functions.php');
test();
echo "finish";
?>

inside the functions.php there's a

<?php
function test()
{
  echo "inside test";
}

You are suppressing errors by prefixing the include_once statement with @. Try removing it so you can see any possible errors that PHP is emitting.

@ suppresses errors. Was there a path or syntax problem? You wouldn't know because you're not getting an error output. Your code is fine.

Hehe, is it just me or just an copy/paste issue but aren't you missing the ?> at the end of functions.php:

<?php
function test()
{
  echo "inside test";
}

and since @ is on and is suppressing errors as everyone else has mentioned, it may be the reason why there is no output.

The @ does not only suppress errors, but, in fact, suppresses all output from that file/function/whatever. Even if there were no syntax errors in your functions.php file, it would have not output anything anyway. It is generally bad practice to use the @ operator for anything, rather just write good code!