Error FpdiTrait.php with lib FpdiPdfParser not exists. about fpdi

[gabi77]

protected function getPdfParserInstance(StreamReader $streamReader)
{
    /** @noinspection PhpUndefinedClassInspection */
    **if (\class_exists(FpdiPdfParser::class, false)) {**
        /** @noinspection PhpUndefinedClassInspection */
        return new FpdiPdfParser($streamReader);
    }

    return new PdfParser($streamReader);
}

property class_exists.

class_name
The class name. The name is matched in a case-insensitive manner.
autoload
Whether or not to call __autoload by default.

[JanSlabon]

This error is raised because your autoload implementation tries to load ANY class that is requested without checking if the file exists. The error message should also tell you that this exception is not raised in FPDI but in your own code. An autoload implementation shall never load anything without validating it. This way it is impossible to check for existance of classes nor be able to use several autoload methods in the chain.

[MaximilianKresse]

Additionally:
You are probably using an invalid autoloader. Like specified in PSR4 "Autoloader implementations MUST NOT throw exceptions, MUST NOT raise errors of any level, and SHOULD NOT return a value.".

There are some autoloaders in the wild that throw errors if a class cannot be found (like the Zend Framework 1 Autoloader). But this complety destroys the ability to check whether a class exists that is allowed to be missing. You have to disable this behaviour in your autoloader (For Zend Framework v1 its $autoloader->suppressNotFoundWarnings(true);).

[gabi77]

Thanks.
yes, I use zend framework 1 by magento 1.9