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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.14 $ -->
<!--
DO NOT TRANSLATE THIS FILE.
THE FUNCTION IT DESCRIBES WAS RENAMED AND THIS NAME IS DEPRECATED.
PLEASE, TRANSLATE THE APPROPRIATE NEW FILE.
-->
<!-- splitted from ./en/functions/oci8.xml, last change in rev 1.2 -->
<refentry id="function.ocinewdescriptor">
<refnamediv>
<refname>ocinewdescriptor</refname>
<refpurpose>
Initialize a new empty LOB or FILE descriptor
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>OCI-Lob</type><methodname>ocinewdescriptor</methodname>
<methodparam><type>resource</type><parameter>connection</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>type</parameter></methodparam>
</methodsynopsis>
<para>
<function>ocinewdescriptor</function> allocates storage to hold
descriptors or LOB locators. Valid values for
<parameter>type</parameter> are <constant>OCI_D_FILE</constant>,
<constant>OCI_D_LOB</constant> and <constant>OCI_D_ROWID</constant>.
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.
</para>
<para>
<example>
<title><function>ocinewdescriptor</function> example</title>
<programlisting role="php">
<![CDATA[
<?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($conn);
?>
]]>
</programlisting>
<programlisting role="php">
<![CDATA[
<?php
/* This script demonstrates file upload to LOB columns
* The formfield used for this example looks like this
* <form action="upload.php" method="post" enctype="multipart/form-data">
* <input type="file" name="lob_upload" />
* ...
*/
if (!isset($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);
}
?>
]]>
</programlisting>
</example>
<example>
<title><function>ocinewdescriptor</function> second example</title>
<programlisting role="php">
<![CDATA[
<?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);
?>
]]>
</programlisting>
</example>
</para>
<note>
<para>
This function was renamed to <function>oci_new_descriptor</function>
after PHP >= 5.0.0. For downward compatibility
<function>ocinewdescriptor</function> can also be used.
This is deprecated, however.
</para>
</note>
</refsect1>
</refentry>
<!-- Keep this comment at the end of the file
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sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
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sgml-parent-document:nil
sgml-default-dtd-file:"../../../../manual.ced"
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vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
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