try catch a failed include

This is a simple question one hour of Googling do not seem to solve. How do you catch a failed include in PHP? For the following code:

try {
    include_once 'mythical_file';
} catch (Exception $e) {
    exit('Fatal');
}

echo '?';

With mythical_file not existing, I get the output '?'. I know PHP can not catch failed required because it triggers a Warning Error, but here? What is the best way to catch a failed include? For example, the following works:

(include_once 'unicorn') or exit('!');

but it does not trigger an exception so I开发者_C百科 cannot retrieve file, line and stack context.

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You can use require_once instead of include_once

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include and include_once trigger warning (E_WARNING), require and require_once trigger error (E_COMPILE_ERROR). So you should use require or require_once.

php.net quote:

"require() is identical to include() except upon failure it will also produce a fatal E_COMPILE_ERROR level error. In other words, it will halt the script whereas include() only emits a warning (E_WARNING) which allows the script to continue. "