Description:
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The code is simple: I just want to select 5 rows from my InterBase database using PDO. 

A live demo can be found: http://www.rsywx.net/smarty/test01.php. 

It is very clear that the first row is not fetched (or missing) so the output is missing BOOKID=00001 and related information. 

Same mechanism works fine for MySQL. 

Reproduce code:
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$PDO1=new PDO("firebird:dbname=localhost:f:\\data\\book.ib", "iis", "iis");
print_r($PDO1->query('SELECT bookid, title, author FROM book order by bookid rows 5')->fetchAll(PDO::FETCH_ASSOC));


Expected result:
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Should have 5 records with BOOKID from 00001 to 00005.

Actual result:
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Now 00001 is missing.