oci_new_cursor

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

oci_new_cursor — 分配并返回一个新的游标（语句句柄）

说明

oci_new_cursor ( resource $connection ) : resource

oci_new_cursor() 在指定的连接上分配一个新的语句句柄。

Example #1 在 Oracle 的存储过程中使用 REF CURSOR

<?php
// suppose your stored procedure info.output returns a ref cursor in :data

$conn = oci_connect("scott", "tiger");
$curs = oci_new_cursor($conn);
$stmt = oci_parse($conn, "begin info.output(:data); end;");

oci_bind_by_name($stmt, "data", $curs, -1, OCI_B_CURSOR);
oci_execute($stmt);
oci_execute($curs);

while ($data = oci_fetch_row($curs)) {
    var_dump($data);
}

oci_free_statement($stmt);
oci_free_statement($curs);
oci_close($conn);
?>

Example #2 在 Oracle 的 select 语句中使用 REF CURSOR

<?php
echo "<html><body>";
$conn = oci_connect("scott", "tiger");
$count_cursor = "CURSOR(select count(empno) num_emps from emp " .
                "where emp.deptno = dept.deptno) as EMPCNT from dept";
$stmt = oci_parse($conn, "select deptno,dname,$count_cursor");

oci_execute($stmt);
echo "<table border=\"1\">";
echo "<tr>";
echo "<th>DEPT NAME</th>";
echo "<th>DEPT #</th>";
echo "<th># EMPLOYEES</th>";
echo "</tr>";

while ($data = oci_fetch_assoc($stmt)) {
    echo "<tr>";
    $dname  = $data["DNAME"];
    $deptno = $data["DEPTNO"];
    echo "<td>$dname</td>";
    echo "<td>$deptno</td>";
    oci_execute($data["EMPCNT"]);
    while ($subdata = oci_fetch_assoc($data["EMPCNT"])) {
        $num_emps = $subdata["NUM_EMPS"];
        echo  "<td>$num_emps</td>";
    }
    echo "</tr>";
}
echo "</table>";
echo "</body></html>";
oci_free_statement($stmt);
oci_close($conn);
?>

oci_new_cursor() 如果出错返回 FALSE。

Note:

在 PHP 5.0.0 之前的版本必须使用 ocinewcursor() 替代本函数。该函数名仍然可用，为向下兼容作为 oci_new_cursor() 的别名。不过其已被废弃，不推荐使用。

User Contributed Notes

mgumiel at mgait dot com 08-Nov-2012 09:15
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);
 ?>
sixd at php dot net 27-Jan-2010 10:41
Oracle 11.2 introduced support for REF CURSOR prefetching
sixd at php dot net 05-Nov-2008 12:13
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