oci_new_cursor

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

oci_new_cursor — 新規カーソル (ステートメントハンドル) を割り当て、それを返す

説明

oci_new_cursor(resource $connection): resource|false

指定された接続に新規カーソルを割り当てます。

パラメータ

connection: oci_connect() あるいは oci_pconnect() が返す Oracle 接続 ID。

戻り値

新しいステートメントハンドル、あるいはエラー時に false を返します。

例

例1 Oracle ストアドプロシージャにおける REF CURSOR のバインド

<?php

// 以下のプロシージャを用意します
//   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($curs);  // REF CURSOR を、ステートメント ID のように利用します
while (($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);

?>

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User Contributed Notes 3 notes

down

mgumiel at mgait dot com ¶

12 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);
 ?>

down

-3

sixd at php dot net ¶

14 years ago

Oracle 11.2 introduced support for REF CURSOR prefetching

down

-4

sixd at php dot net ¶

16 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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