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oci_new_descriptor

Initializes a new empty LOB or FILE descriptor (PHP 5, PECL oci8:1.1-1.2.4)
OCI-Lob oci_new_descriptor ( resource connection [, int type] )

Allocates resources to hold descriptor or LOB locator.

Parameters

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.

Return Values

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

Examples

Example 1653. 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 1654. 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);
?>


Notes

Note:

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.