Description:
------------
Unable to run firebird unparametrized "execute block", containing :xxxx

if query contains string like ":xxxx", pdo->query shows error

SQLSTATE[HY000]: General error: -901 Dynamic SQL Error SQL error code = -901 undefined message number


if I remove "where 1=:test", then execute block works


And, also I cannot prepare and execute "paramerized" execute block if it contains :xxxxx

Execute Block
(
test integer=:test
)
Returns(
 result  varchar(100)
)
as
Begin
 select 'test' from rdb$database where 1=:test
 into result;
 Suspend;
End


I think solution is to ignore any parameters (:xxx) after Begin keyword
in case of firebird

Test script:
---------------
$q="Execute Block
Returns(
 result  varchar(100)
)
as
declare variable test integer=1;
Begin
 select 'test' from rdb\$database where 1=:test
 into result;
 Suspend;
End
";
$sth=$pdo->query($q);
$row=$sth->fetch(PDO::FETCH_ASSOC);


Expected result:
----------------
Array
(
    [RESULT] => test
)

Actual result:
--------------
SQLSTATE[HY000]: General error: -901 Dynamic SQL Error SQL error code = -901 undefined message number