(PHP 4 >= 4.0.4, PHP 5, PHP 7)
bzerrstr — Returns a bzip2 error string
bzerrstr ( resource $bz ) : string
Gets the error string of any bzip2 error returned by the given file pointer.
bz
The file pointer. It must be valid and must point to a file successfully opened by bzopen().
Returns a string containing the error message.
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https://www.php.net/manual/en/function.bzerrstr.php