Zendframework frame, before the Errorcontroller catch the exception of the error (too many connections?), how to get and handle this kind of exception information

Zendframework, how do I get and handle this type of error message before the Errorcontroller catches the error (too many?)?
Zendframework Framework handles error mechanisms before catching errors, an error is:

Fatal error:xxxx MYSQL Because of many connect error XXXXX

This error has the means to obtain and modify the error message display it?

PHP Novice, please advise, thank you.
------Solution--------------------
Because if the extension is a direct throw fatal, it's hard to catch.
In this case, the key issue is that there is a problem with your MySQL configuration, time wait is too long and no long connection causes too many MySQL connection errors

Check your MySQL configuration.

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