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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@162665 c90b9560-bf6c-de11-be94-00142212c4b1
173 lines
4.8 KiB
XML
173 lines
4.8 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.4 $ -->
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<refentry id="function.oci-new-connect">
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<refnamediv>
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<refname>oci_new_connect</refname>
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<refpurpose>Establishes a new connection to the Oracle server</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>resource</type><methodname>oci_new_connect</methodname>
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<methodparam><type>string</type><parameter>username</parameter></methodparam>
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<methodparam><type>string</type><parameter>password</parameter></methodparam>
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<methodparam choice="opt"><type>string</type><parameter>db</parameter></methodparam>
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<methodparam choice="opt"><type>string</type><parameter>charset</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>oci_new_connect</function> creates a new connection to an Oracle
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server and logs on. The optional third parameter can either contain the name
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of the local Oracle instance or the name of the entry in
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<filename>tnsnames.ora</filename>. If the third parameter is not specified,
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PHP uses environment variables <literal>ORACLE_SID</literal> and
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<literal>TWO_TASK</literal> to determine the name of local Oracle
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instance and location of <filename>tnsnames.ora</filename> accordingly.
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</para>
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<para>
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Using Oracle server version 9.2 and greater, you can indicate
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<parameter>charset</parameter> parameter, which will be used in the new
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connection. If you're using Oracle server < 9.2, this parameter will be
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ignored and NLS_LANG environment variable will be used instead.
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</para>
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<para>
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<function>oci_new_connect</function> forces the creation of a new connection.
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This should be used if you need to isolate a set of transactions. By
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default, connections are shared and subsequent calls to
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<function>oci_connect</function> will return the same connection
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identifier.
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</para>
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<para>
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The following demonstrates how you can separate connections.
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<example>
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<title><function>oci_new_connect</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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echo "<html><pre>";
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$db = "";
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$c1 = oci_connect("scott", "tiger", $db);
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$c2 = oci_new_connect("scott", "tiger", $db);
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function create_table($conn)
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{
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$stmt = oci_parse($conn, "create table scott.hallo (test
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varchar2(64))");
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oci_execute($stmt);
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echo $conn . " created table\n\n";
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}
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function drop_table($conn)
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{
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$stmt = oci_parse($conn, "drop table scott.hallo");
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oci_execute($stmt);
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echo $conn . " dropped table\n\n";
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}
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function insert_data($conn)
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{
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$stmt = oci_parse($conn, "insert into scott.hallo
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values('$conn' || ' ' || to_char(sysdate,'DD-MON-YY HH24:MI:SS'))");
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oci_execute($stmt, OCI_DEFAULT);
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echo $conn . " inserted hallo\n\n";
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}
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function delete_data($conn)
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{
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$stmt = oci_parse($conn, "delete from scott.hallo");
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oci_execute($stmt, OCI_DEFAULT);
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echo $conn . " deleted hallo\n\n";
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}
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function commit($conn)
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{
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oci_commit($conn);
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echo $conn . " committed\n\n";
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}
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function rollback($conn)
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{
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oci_rollback($conn);
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echo $conn . " rollback\n\n";
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}
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function select_data($conn)
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{
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$stmt = oci_parse($conn, "select * from scott.hallo");
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oci_execute($stmt, OCI_DEFAULT);
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echo $conn . "----selecting\n\n";
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while (oci_fetch($stmt)) {
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echo $conn . " <" . oci_result($stmt, "TEST") . ">\n\n";
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}
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echo $conn . "----done\n\n";
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}
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create_table($c1);
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insert_data($c1);
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select_data($c1);
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select_data($c2);
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rollback($c1);
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select_data($c1);
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select_data($c2);
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insert_data($c2);
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commit($c2);
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select_data($c1);
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delete_data($c1);
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select_data($c1);
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select_data($c2);
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commit($c1);
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select_data($c1);
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select_data($c2);
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drop_table($c1);
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echo "</pre></html>";
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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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<para>
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<function>oci_new_connect</function> returns &false; on error.
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</para>
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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>ocinlogon</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_connect</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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<simpara>
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See also <function>oci_connect</function> and
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<function>oci_pconnect</function>.
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</simpara>
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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:"../../../../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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