oci_new_cursor

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

oci_new_cursorAllocates and returns a new cursor (statement handle)

Beschreibung

oci_new_cursor(resource $connection): resource|false

Allocates a new statement handle on the specified connection.

Parameter-Liste

connection

An Oracle connection identifier, returned by oci_connect() or oci_pconnect().

Rückgabewerte

Returns a new statement handle, or false on error.

Beispiele

Beispiel #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);

?>

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User Contributed Notes 3 notes

up
8
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
-2
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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