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

resource oci_new_cursor ( resource $connection )

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。

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User Contributed Notes 3 notes

up
7
mgumiel at mgait dot com
5 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
-2
sixd at php dot net
9 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
up
-2
sixd at php dot net
7 years ago
Oracle 11.2 introduced support for REF CURSOR prefetching
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