Description:
------------
Similar on overflow of the buffer as at 1 inquiry, the server will crash, in other case gives out that a block size limit 

Reproduce code:
---------------
Warning: ibase_fetch_row() [function.ibase-fetch-row]: Error reading data from the connection. in /home/denis/user/0.php on line 51

Warning: Unknown: Unable to complete network request to host "192.168.0.20". Error writing data to the connection. Broken pipe in Unknown on line 0

Warning: Unknown: Unable to complete network request to host "192.168.0.20". Error writing data to the connection. Broken pipe in Unknown on line 0


Expected result:
----------------
Warning: ibase_query() [function.ibase-query]: 
invalid request BLR at offset 169 Implementation limit exceeded block size exceeds implementation restriction 

Actual result:
--------------
$sql="select PR.ID as F0
, PB.ID as F1
, cast(trimx(skui(strlen((select TEXT from GET_LANGUAGE_TEXT('ET', 'PRODUCT', 'NAME', PR.ID))), (select TEXT from GET_LANGUAGE_TEXT('ET', 'PRODUCT', 'NAME', PR.ID)), PR.NAME))||' '||trimx(PB.NAME) as VARCHAR(32000)) as F2
, PR.SEARCHCODE as F8
, cast(trimx(skui(strlen((select TEXTB from GET_LANGUAGE_TEXT2('ET', 'PRODUCT', 'ADDITIONAL', PR.ID))), (select TEXTB from GET_LANGUAGE_TEXT2('ET', 'PRODUCT', 'ADDITIONAL', PR.ID)), PR.ADDITIONAL)) as VARCHAR(32000)) as F3
, PR.PACKAGE as F7
, PR.PICTUREDATAEXT as F6
, skui(strlen((select TEXT from GET_LANGUAGE_TEXT('ET', 'PRODUCT_MEASUREMENT_UNIT', 'NAME', PR.MEASURUNIT_ID))),
         (select TEXT from GET_LANGUAGE_TEXT('ET', 'PRODUCT_MEASUREMENT_UNIT', 'NAME', PR.MEASURUNIT_ID)), PMU.NAME) as F4
, (select PG.POST from PRODUCT_GROUP PG where PG.ID=PR.GROUP_ID) as F9
, (select sum(PQ.FREEQUANTITY) from PRODUCT_QUANTITY PQ where ((PQ.PRODUCT_ID=PR.ID)  and (PQ.BACH_ID=PB.ID) and (PQ.OBJECT_ID=PG.OBJECT_ID)))-rnull(PG.MINLIMIT) as F10
, rnull(0) as F11
, PR.PICTUREDATA as F15
, (select CTP.NAMEET from CUSTOM_PROD_TYPE CTP where CTP.ID=PR.A8) as F60
, (select MAX(FILENAME) from ATTACHMENT where (((TABLENAME='PRODUCT_BACH') and (TABLEITEM_ID=PB.ID))or ((TABLENAME='PRODUCT') and (TABLEITEM_ID=PR.ID))) and (TRIMX(UPPER(FILENAME)) like '%.PDF' )) as F24
, PR.A7 as F51
, PR.A10 as F54
, PR.A11 as F55
, PR.A12 as F56
, PR.A13 as F57
, PR.A14 as F58
, PR.A9 as F53
/*, PR.CUSTOM_DESCRIPTION as A53*/
 from PRODUCT_BACH PB
    left join PRODUCT PR on (PR.ID=PB.PRODUCT_ID)
    left join PRODUCT_MEASUREMENT_UNIT PMU on (PMU.ID=PR.MEASURUNIT_ID) 
left join PRODUCT_GROUP PG on (PG.ID=PR.GROUP_ID) 

    where ((PB.ID=7053) and (PR.ID=4517))";

$sth1=ibase_query($dbh, $sql);
while ($res = ibase_fetch_row($sth1)) {
  print $res[0].'!';
  }