|
|
db2_fetch_row (PECL) db2_fetch_row --
Sets the result set pointer to the next row or requested row
Описаниеbool db2_fetch_row ( resource stmt [, int row_number] )
Use db2_fetch_row() to iterate through a result set, or
to point to a specific row in a result set if you requested a scrollable
cursor.
To retrieve individual fields from the result set, call the
db2_result() function.
Rather than calling db2_fetch_row() and
db2_result(), most applications will call one of
db2_fetch_assoc(), db2_fetch_both(),
or db2_fetch_array() to advance the result set pointer
and return a complete row as an array.
Список параметров
stmt
A valid stmt resource.
row_number
With scrollable cursors, you can request a specific row number in the
result set. Row numbering is 1-indexed.
Возвращаемые значения
Returns TRUE if the requested row exists in the result set. Returns
FALSE if the requested row does not exist in the result set.
Примеры
Пример 1. Iterating through a result set
The following example demonstrates how to iterate through a result set
with db2_fetch_row() and retrieve columns from the
result set with db2_result().
|
<?php
$sql = 'SELECT name, breed FROM animals WHERE weight < ?';
$stmt = db2_prepare($conn, $sql);
db2_execute($stmt, array(10));
while (db2_fetch_row($stmt)) {
$name = db2_result($stmt, 0);
$breed = db2_result($stmt, 1);
print "$name $breed";
}
?>
|
Результат выполнения данного примера: cat Pook
gold fish Bubbles
budgerigar Gizmo
goat Rickety Ride |
|
Пример 2. i5/OS recommended alternatives to db2_fetch_row/db2_result
On i5/OS it is recommended that you use db2_fetch_both(),
db2_fetch_array(), or db2_fetch_object()
over db2_fetch_row()/db2_result(). In general
db2_fetch_row()/db2_result() have more issues
with various column types in EBCIDIC to ASCII
translation, including possible truncation in DBCS applications.
You may also find the performance of db2_fetch_both(),
db2_fetch_array(), and db2_fetch_object() to
be superior to db2_fetch_row()/db2_result().
|
<?php
$conn = db2_connect("","","");
$sql = 'SELECT SPECIFIC_SCHEMA, SPECIFIC_NAME, ROUTINE_SCHEMA, ROUTINE_NAME, ROUTINE_TYPE, ROUTINE_CREATED, ROUTINE_BODY, IN_PARMS, OUT_PARMS, INOUT_PARMS, PARAMETER_STYLE, EXTERNAL_NAME, EXTERNAL_LANGUAGE FROM QSYS2.SYSROUTINES FETCH FIRST 2 ROWS ONLY';
$stmt = db2_exec($conn, $sql, array('cursor' => DB2_SCROLLABLE));
while ($row = db2_fetch_both($stmt)){
echo "<br>db2_fetch_both {$row['SPECIFIC_NAME']} {$row['ROUTINE_CREATED']} {$row[5]}";
}
$stmt = db2_exec($conn, $sql, array('cursor' => DB2_SCROLLABLE));
while ($row = db2_fetch_array($stmt)){
echo "<br>db2_fetch_array {$row[1]} {$row[5]}";
}
$stmt = db2_exec($conn, $sql, array('cursor' => DB2_SCROLLABLE));
while ($row = db2_fetch_object($stmt)){
echo "<br>db2_fetch_object {$row->SPECIFIC_NAME} {$row->ROUTINE_CREATED}";
}
db2_close($conn);
?>
|
Результат выполнения данного примера: db2_fetch_both MATCH_ANIMAL 2006-08-25-17.10.23.775000 2006-08-25-17.10.23.775000
db2_fetch_both MULTIRESULTS 2006-10-17-10.11.05.308000 2006-10-17-10.11.05.308000
db2_fetch_array MATCH_ANIMAL 2006-08-25-17.10.23.775000
db2_fetch_array MULTIRESULTS 2006-10-17-10.11.05.308000
db2_fetch_object MATCH_ANIMAL 2006-08-25-17.10.23.775000
db2_fetch_object MULTIRESULTS 2006-10-17-10.11.05.308000 |
|
krisdover at hotmail dot com
21-Jan-2007 12:54
if the second parameter (the row number) is specified, your connection needs to have the CURSOR option set to DB2_SCROLLABLE. Otherwise all calls to this function will fail. Internal to the ibm_db2 extension module the db2cli api function SQLFetchScroll() generates the error "CLI0145E Fetch type out of range" since it requires a scrollable resultset to work, instead of the default forward only resultset.
hope this saves someone the time it took me to track this down in the db2cli traces.
Regards,
Kris Dover
andrey at php dot net
26-Nov-2005 01:11
If the second parameter is 0 or NULL (which eventually evaluates to 0) then the internal pointer is moved forward. < 0 value will return an warning.
|
db2_fetch_object