oci_new_descriptor

(PHP 5, PECL oci8:1.1-1.2.4)

oci_new_descriptor — Initializes a new empty LOB or FILE descriptor

Opis

OCI-Lob oci_new_descriptor ( resource $connection [, int $type ] )

Allocates resources to hold descriptor or LOB locator.

Parametry

connection: An Oracle connection identifier, returned by oci_connect() or oci_pconnect().
type: Valid values for type are: OCI_D_FILE, OCI_D_LOB and OCI_D_ROWID.

Zwracane wartości

Returns a new LOB or FILE descriptor on success, FALSE on error.

Przykłady

Example #1 oci_new_descriptor() example


<?php
/* This script is designed to be called from a HTML form.
 * It expects $user, $password, $table, $where, and $commitsize
 * to be passed in from the form.  The script then deletes
 * the selected rows using the ROWID and commits after each
 * set of $commitsize rows. (Use with care, there is no rollback)
 */
$conn = oci_connect($user, $password);
$stmt = oci_parse($conn, "select rowid from $table $where");
$rowid = oci_new_descriptor($conn, OCI_D_ROWID);
oci_define_by_name($stmt, "ROWID", $rowid);
oci_execute($stmt);
while (oci_fetch($stmt)) {
    $nrows = oci_num_rows($stmt);
    $delete = oci_parse($conn, "delete from $table where ROWID = :rid");
    oci_bind_by_name($delete, ":rid", $rowid, -1, OCI_B_ROWID);
    oci_execute($delete);
    echo "$nrows\n";
    if (($nrows % $commitsize) == 0) {
        oci_commit($conn);
    }
}
$nrows = oci_num_rows($stmt);
echo "$nrows deleted...\n";
oci_free_statement($stmt);
oci_close($conn);
?>


<?php
    /* This script demonstrates file upload to LOB columns
     * The formfield used for this example looks like this
     * <form action="upload.php" method="post" enctype="multipart/form-data">
     * <input type="file" name="lob_upload" />
     * ...
     */
  if (!isset($lob_upload) || $lob_upload == 'none'){
?>
<form action="upload.php" method="post" enctype="multipart/form-data">
Upload file: <input type="file" name="lob_upload" /><br />
<input type="submit" value="Upload" /> - <input type="reset" value="Reset" />
</form>
<?php
  } else {

     // $lob_upload contains the temporary filename of the uploaded file

     // see also the features section on file upload,
     // if you would like to use secure uploads

     $conn = oci_connect($user, $password);
     $lob = oci_new_descriptor($conn, OCI_D_LOB);
     $stmt = oci_parse($conn, "insert into $table (id, the_blob)
               values(my_seq.NEXTVAL, EMPTY_BLOB()) returning the_blob into :the_blob");
     oci_bind_by_name($stmt, ':the_blob', $lob, -1, OCI_B_BLOB);
     oci_execute($stmt, OCI_DEFAULT);
     if ($lob->savefile($lob_upload)){
        oci_commit($conn);
        echo "Blob successfully uploaded\n";
     }else{
        echo "Couldn't upload Blob\n";
     }
     oci_free_descriptor($lob);
     oci_free_statement($stmt);
     oci_close($conn);
  }
?>

Example #2 oci_new_descriptor() example


<?php
/* Calling PL/SQL stored procedures which contain clobs as input
 * parameters (PHP 4 >= 4.0.6).
 * Example PL/SQL stored procedure signature is:
 *
 * PROCEDURE save_data
 *   Argument Name                  Type                    In/Out Default?
 *   ------------------------------ ----------------------- ------ --------
 *   KEY                            NUMBER(38)              IN
 *   DATA                           CLOB                    IN
 *
 */

$conn = oci_connect($user, $password);
$stmt = oci_parse($conn, "begin save_data(:key, :data); end;");
$clob = oci_new_descriptor($conn, OCI_D_LOB);
oci_bind_by_name($stmt, ':key', $key);
oci_bind_by_name($stmt, ':data', $clob, -1, OCI_B_CLOB);
$clob->write($data);
oci_execute($stmt, OCI_DEFAULT);
oci_commit($conn);
$clob->free();
oci_free_statement($stmt);
?>

Notatki

Informacja: In PHP versions before 5.0.0 you must use ocinewdescriptor() instead. This name still can be used, it was left as alias of oci_new_descriptor() for downwards compatability. This, however, is deprecated and not recommended.

oci_num_fields

oci_new_cursor

Last updated: Fri, 10 Oct 2008

add a note User Contributed Notes
oci_new_descriptor

ajitsingh4u at gmail dot com
09-May-2008 03:31


<?php

// calling stored procedure to get clob data type (we use to get xml from oracle)



error_reporting(E_ALL ^ E_NOTICE);



$conn = oci_connect($user, $password);

        

$sql = "BEGIN sp_employee_xml_data_select(:result); END;";

$stmt = oci_parse($conn , $sql);



$objClob = oci_new_descriptor($conn, OCI_D_LOB);

oci_bind_by_name($stmt, ':result', $objClob, -1, OCI_B_CLOB);



oci_execute($stmt, OCI_DEFAULT);

$xmlData = $objClob->load($result);



$objClob->free();

oci_free_statement($stmt);



echo $xmlData;



?>

Ben Hubbard ben at vonik dot com
07-Apr-2006 06:57


Here is another example of how to insert a BLOB into table using a PL/SQL function.



Oracle Database Code:



create table blob_table ( the_blob blob);



create or replace function insert_blob(out_blob out blob) 

    return integer is

    begin

       insert into blob_table values (EMPTY_BLOB()) 

         return the_blob into out_blob;

       return 0; /* Success */

    end insert_blob;



PHP Code:



<?php

  $iResult = -1;

  $strTestData = 'Testing 123';

  $conn = oci_connect($user, $password);

  $stmt = oci_parse($conn, "begin :RES := insert_blob(:OUT_BLOB); end;");

 

  $objBlob = oci_new_descriptor($conn, OCI_D_LOB);

  oci_bind_by_name($stmt, ":RES", $iResult);

  oci_bind_by_name($stmt, ":OUT_BLOB", $objBlob, -1, OCI_B_BLOB);

  oci_execute($stmt, OCI_DEFAULT);

  $objBlob->write($strTestData);

  oci_commit($conn);

  $objBlob->free();

  oci_free_statement($stmt);

?>

cyrill@_malevanov_dot_spb_dot_ru
10-May-2004 10:05


Passing CLOB to stored procedure and retrieve CLOB too (function lobinout(a in clob) return clob)





<?


    error_reporting(1+2+4+8);


    $conn = OCILogon('batdtd', 'batdtd', 'batxml');


    


    $lobin = OCINewDescriptor($conn, OCI_D_LOB);


    $lobout = OCINewDescriptor($conn, OCI_D_LOB);


    


    $stmt = OCIParse($conn, "declare rs clob; begin :rs := lobinout(:par); end;");


    $lob_data = 'abcdefgh';


    


    echo "binding lobin...";


    OCIBindByName($stmt, ':par', $lobin, -1, OCI_B_CLOB);


    


    echo "done<br>binding rs...";


    


    OCIBindByName($stmt, ':rs', $lobout, -1, OCI_B_CLOB);


    


    echo "done<br>writing temp lob...";


             // here we pass data to func


    $lobin -> WriteTemporary($lob_data);


    echo "done<br>executing...";


    


    OCIExecute($stmt, OCI_DEFAULT);


             // here we load data returned from func


    echo "done<br>rs = ".$lobout->load();


    OCICommit($conn);


    $lobin -> free();


    $lobout -> free();


    OCIFreeStatement($stmt);


    OCILogoff($conn);


?>

add a note

oci_num_fields

oci_new_cursor

Last updated: Fri, 10 Oct 2008