Php/docs/function.oci-new-descriptor
oci_new_descriptor
(PHP 5, PHP 7, PECL OCI8 >= 1.1.0)
oci_new_descriptor — Initializes a new empty LOB or FILE descriptor
Description
oci_new_descriptor
( resource $connection
[, int $type = OCI_DTYPE_LOB
] ) : OCI-Lob
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
typeare:OCI_DTYPE_FILE,OCI_DTYPE_LOBandOCI_DTYPE_ROWID.
Return Values
Returns a new LOB or FILE descriptor on success, FALSE on error.
Examples
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"; } $lob->free(); oci_free_statement($stmt); oci_close($conn); }?>
Example #2 oci_new_descriptor() example
<?php/* Calling PL/SQL stored procedures which contain clobs as input * parameters. * Example PL/SQL stored procedure signature is: * * PROCEDURE save_data * Argument Name Type In/Out Default? * ------------------------------ ----------------------- ------ -------- * KEY NUMBER(38) IN * DATA CLOB IN * */$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.
