Prevent gzuncompress to throw ErrorException on invalid data

Hello,
I'm working on an controller in the newest CI-Version to load and uncompress date.
Currently I'm testing on invalid data.
If the data is invalid by a modified data, I put "hello world" in it, CI throws an ErrorException.
ErrorException
gzuncompress(): data error

But I would like to handle the error myself using the return value.
How can I prenvet this?
Try and catch does not work.

PHP Code:

try
{
    $this->Config['OutputContent'] = gzuncompress($OutputContentGZ);
}
catch (Exception $ex)
{
    return 2022;
} 


Thanks
Stefan

Found it myself with the docu :-)
using

Code:

\Exception

makes the difference

Code:

try
{
    $this->Config['OutputContent'] = gzuncompress($OutputContentGZ);
}
catch (\Exception $ex)
{
    return 2022;
} 

Stefan