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# ocinewdescriptor

(PHP 3>= 3.0.7, PHP 4 , PHP 5)

ocinewdescriptor -- Initialize a new empty LOB or FILE descriptor

## Description

object ocinewdescriptor ( resource connection [, int type])

ocinewdescriptor() allocates storage to hold descriptors or LOB locators. Valid values for type are `OCI_D_FILE`, `OCI_D_LOB` and `OCI_D_ROWID`. For LOB descriptors, the methods load, save, and savefile are associated with the descriptor, for BFILE only the load method exists. See the second example usage hints.

示範 1.ocinewdescriptor() 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) */ $conn = OCILogon($user, $password); $stmt = OCIParse($conn, "select rowid from $table $where"); $rowid = OCINewDescriptor($conn, OCI_D_ROWID); OCIDefineByName($stmt, "ROWID", &$rowid); OCIExecute($stmt); while (OCIFetch($stmt)) { $nrows = OCIRowCount($stmt); $delete = OCIParse($conn, "delete from $table where ROWID = :rid"); OCIBindByName($delete, ":rid", &$rowid, -1, OCI_B_ROWID); OCIExecute($delete); echo "$nrows\n"; if (($nrows % $commitsize) == 0) { OCICommit($conn); } } $nrows = OCIRowCount($stmt); echo "$nrows deleted...\n"; OCIFreeStatement($stmt); OCILogoff($conn); ?>`
`<?php /* This script demonstrates file upload to LOB columns * The formfield used for this example looks like this * <form action="upload.php" method="post" enctype="multipart/form-data"> * <input type="file" name="lob_upload" /> * ... */ if (!isset($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 $conn = OCILogon($user, $password); $lob = OCINewDescriptor($conn, OCI_D_LOB); $stmt = OCIParse($conn, "insert into $table (id, the_blob) values(my_seq.NEXTVAL, EMPTY_BLOB()) returning the_blob into :the_blob"); OCIBindByName($stmt, ':the_blob', &$lob, -1, OCI_B_BLOB); OCIExecute($stmt, OCI_DEFAULT); if ($lob->savefile($lob_upload)){ OCICommit($conn); echo "Blob successfully uploaded\n"; }else{ echo "Couldn't upload Blob\n"; } OCIFreeDesc($lob); OCIFreeStatement($stmt); OCILogoff($conn); } ?>`

示範 2.ocinewdescriptor() second 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 * */ $conn = OCILogon($user, $password); $stmt = OCIParse($conn, "begin save_data(:key, :data); end;"); $clob = OCINewDescriptor($conn, OCI_D_LOB); OCIBindByName($stmt, ':key', $key); OCIBindByName($stmt, ':data', $clob, -1, OCI_B_CLOB); $clob->WriteTemporary($data); OCIExecute($stmt, OCI_DEFAULT); OCICommit($conn); $clob->close(); $clob->free(); OCIFreeStatement($stmt); ?>`

> 備注: This function was renamed to oci_new_descriptor() after PHP >= 5.0.0. For downward compatibility ocinewdescriptor() can also be used. This is deprecated, however.

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