When i'm using following code then fatal error generate.
echo empty(is_resource(true));
Error:
Fatal error: Can't use function return value in write context.
Why?
Add a comment
|
1 Answer
empty requires a variable as if the parameter were passed by reference:
Note:
empty()only checks variables as anything else will result in a parse error. In other words, the following will not work:empty(trim($name)).
So you could do this:
$var = is_resource(true);
echo empty($var);
But as is_resource already returns a boolean value, you actually don’t need another testing function.
Comments
