oci_new_cursor
(PHP 5, PECL OCI8 >= 1.1.0)
oci_new_cursor — Allocates and returns a new cursor (statement handle)
Description
resource oci_new_cursor
( resource
$connection
)Allocates a new statement handle on the specified connection.
Return Values
Returns a new statement handle, or FALSE on error.
Examples
Example #1 Binding a REF CURSOR in an Oracle stored procedure call
<?php
// Precreate:
// create or replace procedure myproc(myrc out sys_refcursor) as
// begin
// open myrc for select first_name from employees;
// end;
$conn = oci_connect("hr", "hrpwd", "localhost/XE");
if (!$conn) {
$m = oci_error();
trigger_error(htmlentities($m['message']), E_USER_ERROR);
}
$curs = oci_new_cursor($conn);
$stid = oci_parse($conn, "begin myproc(:cursbv); end;");
oci_bind_by_name($stid, ":cursbv", $curs, -1, OCI_B_CURSOR);
oci_execute($stid);
oci_execute($curs); // Execute the REF CURSOR like a normal statement id
while (($row = oci_fetch_array($curs, OCI_ASSOC+OCI_RETURN_NULLS)) != false) {
echo $row['FIRST_NAME'] . "<br />\n";
}
oci_free_statement($stid);
oci_free_statement($curs);
oci_close($conn);
?>
Notes
Note:
In PHP versions before 5.0.0 you must use ocinewcursor() instead. This name still can be used, it was left as alias of oci_new_cursor() for downwards compatability. This, however, is deprecated and not recommended.
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для работы с базами данных
- Расширения для работы с базами данных отдельных производителей
- Oracle OCI8
- oci_bind_array_by_name
- oci_bind_by_name
- oci_cancel
- oci_client_version
- oci_close
- oci_commit
- oci_connect
- oci_define_by_name
- oci_error
- oci_execute
- oci_fetch_all
- oci_fetch_array
- oci_fetch_assoc
- oci_fetch_object
- oci_fetch_row
- oci_fetch
- oci_field_is_null
- oci_field_name
- oci_field_precision
- oci_field_scale
- oci_field_size
- oci_field_type_raw
- oci_field_type
- oci_free_descriptor
- oci_free_statement
- oci_get_implicit_resultset
- oci_internal_debug
- oci_lob_copy
- oci_lob_is_equal
- oci_new_collection
- oci_new_connect
- oci_new_cursor
- oci_new_descriptor
- oci_num_fields
- oci_num_rows
- oci_parse
- oci_password_change
- oci_pconnect
- oci_result
- oci_rollback
- oci_server_version
- oci_set_action
- oci_set_client_identifier
- oci_set_client_info
- oci_set_edition
- oci_set_module_name
- oci_set_prefetch
- oci_statement_type
Коментарии
Because OCI8 uses "prefetching" to greatly improve returning query results, but Oracle doesn't support prefetching for REF CURSORs, application performance using REF CURSORs can be greatly improved by writing a PL/SQL function that pulls data from the REF CURSOR and PIPEs the output. The new function can be queried in a SELECT as if it were a table. See http://blogs.oracle.com/opal/2008/11/converting_ref_cursor_to_pipe.html
Oracle 11.2 introduced support for REF CURSOR prefetchingSome packages in oracle are functions, and that functions returns a cursor.
For example:
CREATE FUNCTION F_Function( p1 char(2), p2 int)
RETURN SYS_REFCURSOR
AS
my_cursor SYS_REFCURSOR;
BEGIN
OPEN my_cursor FOR SELECT * FROM allitems
WHERE (cod=p1)
AND (Number=p2);
RETURN my_cursor;
END F_Function;
Here is the code that allows to obtain data from a function that returns a cursor.
<pre>
<?php
$conn=oci_connect("server", "user", "pass");
if (!$conn) {
$e = oci_error();
trigger_error(htmlentities($e['message']), E_USER_ERROR);
}
//You must asign before.
$p1 = '03';
$p2 = 2012016191;
$stid = oci_parse($conn, 'begin :cursor := server.PKG_package.F_Function(:p1,:p2); end;');
$p_cursor = oci_new_cursor($conn);
//Send parameters variable value lenght
oci_bind_by_name($stid, ':p1', $p1,2);
oci_bind_by_name($stid, ':p2', $p2,10);
//Bind Cursor put -1
oci_bind_by_name($stid, ':cursor', $p_cursor, -1, OCI_B_CURSOR);
// Execute Statement
oci_execute($stid);
oci_execute($p_cursor, OCI_DEFAULT);
oci_fetch_all($p_cursor, $cursor, null, null, OCI_FETCHSTATEMENT_BY_ROW);
echo '<br>';
print_r($cursor);
?>