mirror of
https://github.com/sigmasternchen/php-doc-en
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55bd0eb047
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@290732 c90b9560-bf6c-de11-be94-00142212c4b1
211 lines
6.1 KiB
XML
211 lines
6.1 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision$ -->
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<refentry xml:id="function.oci-new-descriptor" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>oci_new_descriptor</refname>
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<refpurpose>Initializes a new empty LOB or FILE descriptor</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>OCI-Lob</type><methodname>oci_new_descriptor</methodname>
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<methodparam><type>resource</type><parameter>connection</parameter></methodparam>
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<methodparam choice="opt"><type>int</type><parameter>type</parameter><initializer>OCI_DTYPE_LOB</initializer></methodparam>
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</methodsynopsis>
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<para>
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Allocates resources to hold descriptor or LOB locator.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>connection</parameter></term>
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<listitem>
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<para>
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An Oracle connection identifier, returned by
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<function>oci_connect</function> or <function>oci_pconnect</function>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>type</parameter></term>
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<listitem>
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<para>
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Valid values for <parameter>type</parameter> are:
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<constant>OCI_DTYPE_FILE</constant>, <constant>OCI_DTYPE_LOB</constant> and
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<constant>OCI_DTYPE_ROWID</constant>.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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Returns a new LOB or FILE descriptor on success, &false; on error.
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title><function>oci_new_descriptor</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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/* This script is designed to be called from a HTML form.
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* It expects $user, $password, $table, $where, and $commitsize
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* to be passed in from the form. The script then deletes
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* the selected rows using the ROWID and commits after each
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* set of $commitsize rows. (Use with care, there is no rollback)
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*/
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$conn = oci_connect($user, $password);
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$stmt = oci_parse($conn, "select rowid from $table $where");
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$rowid = oci_new_descriptor($conn, OCI_D_ROWID);
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oci_define_by_name($stmt, "ROWID", $rowid);
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oci_execute($stmt);
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while (oci_fetch($stmt)) {
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$nrows = oci_num_rows($stmt);
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$delete = oci_parse($conn, "delete from $table where ROWID = :rid");
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oci_bind_by_name($delete, ":rid", $rowid, -1, OCI_B_ROWID);
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oci_execute($delete);
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echo "$nrows\n";
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if (($nrows % $commitsize) == 0) {
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oci_commit($conn);
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}
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}
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$nrows = oci_num_rows($stmt);
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echo "$nrows deleted...\n";
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oci_free_statement($stmt);
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oci_close($conn);
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?>
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]]>
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</programlisting>
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<programlisting role="php">
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<![CDATA[
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<?php
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/* This script demonstrates file upload to LOB columns
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* The formfield used for this example looks like this
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* <form action="upload.php" method="post" enctype="multipart/form-data">
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* <input type="file" name="lob_upload" />
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* ...
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*/
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if (!isset($lob_upload) || $lob_upload == 'none'){
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?>
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<form action="upload.php" method="post" enctype="multipart/form-data">
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Upload file: <input type="file" name="lob_upload" /><br />
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<input type="submit" value="Upload" /> - <input type="reset" value="Reset" />
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</form>
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<?php
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} else {
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// $lob_upload contains the temporary filename of the uploaded file
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// see also the features section on file upload,
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// if you would like to use secure uploads
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$conn = oci_connect($user, $password);
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$lob = oci_new_descriptor($conn, OCI_D_LOB);
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$stmt = oci_parse($conn, "insert into $table (id, the_blob)
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values(my_seq.NEXTVAL, EMPTY_BLOB()) returning the_blob into :the_blob");
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oci_bind_by_name($stmt, ':the_blob', $lob, -1, OCI_B_BLOB);
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oci_execute($stmt, OCI_DEFAULT);
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if ($lob->savefile($lob_upload)){
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oci_commit($conn);
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echo "Blob successfully uploaded\n";
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}else{
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echo "Couldn't upload Blob\n";
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}
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oci_free_descriptor($lob);
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oci_free_statement($stmt);
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oci_close($conn);
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}
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?>
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]]>
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</programlisting>
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</example>
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<example>
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<title><function>oci_new_descriptor</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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/* Calling PL/SQL stored procedures which contain clobs as input
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* parameters (PHP 4 >= 4.0.6).
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* Example PL/SQL stored procedure signature is:
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*
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* PROCEDURE save_data
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* Argument Name Type In/Out Default?
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* ------------------------------ ----------------------- ------ --------
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* KEY NUMBER(38) IN
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* DATA CLOB IN
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*
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*/
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$conn = oci_connect($user, $password);
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$stmt = oci_parse($conn, "begin save_data(:key, :data); end;");
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$clob = oci_new_descriptor($conn, OCI_D_LOB);
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oci_bind_by_name($stmt, ':key', $key);
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oci_bind_by_name($stmt, ':data', $clob, -1, OCI_B_CLOB);
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$clob->write($data);
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oci_execute($stmt, OCI_DEFAULT);
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oci_commit($conn);
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$clob->free();
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oci_free_statement($stmt);
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?>
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]]>
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</programlisting>
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</example>
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</para>
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</refsect1>
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<refsect1 role="notes">
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&reftitle.notes;
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<note>
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<para>
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In PHP versions before 5.0.0 you must use <function>ocinewdescriptor</function> instead.
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This name still can be used, it was left as alias of
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<function>oci_new_descriptor</function> for downwards compatability.
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This, however, is deprecated and not recommended.
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</para>
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</note>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>oci_bind_by_name</function></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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