oci_new_cursor

(PHP 5, PHP 7, PHP 8, 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, -1OCI_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
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