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oci_new_cursor

(PHP 5, PHP 7, PHP 8, PECL OCI8 >= 1.1.0)

oci_new_cursor分配并返回新的游标(语句句柄)

说明

oci_new_cursor(resource $connection): resource|false

在指定连接上分配新的语句句柄。

参数

connection

Oracle 连接标识符,由 oci_connect()oci_pconnect() 返回。

返回值

返回新的语句句柄,或者失败时返回 false

示例

示例 #1 在调用 Oracle 存储过程中绑定 REF CURSOR

<?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);

?>

add a note

User Contributed Notes 3 notes

up
10
mgumiel at mgait dot com
11 years ago
Some 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);
?>
up
-3
sixd at php dot net
14 years ago
Oracle 11.2 introduced support for REF CURSOR prefetching
up
-4
sixd at php dot net
15 years ago
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
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