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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@115750 c90b9560-bf6c-de11-be94-00142212c4b1
145 lines
4.2 KiB
XML
145 lines
4.2 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.3 $ -->
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<!-- splitted from ./en/functions/oci8.xml, last change in rev 1.2 -->
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<refentry id="function.ocilogon">
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<refnamediv>
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<refname>ocilogon</refname>
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<refpurpose>Establishes a connection to Oracle</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>int</type><methodname>ocilogon</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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</methodsynopsis>
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<para>
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<function>ocilogon</function> returns an connection identifier
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needed for most other OCI calls. The optional third parameter
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can either contain the name of the local Oracle instance or the
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name of the entry in tnsnames.ora to which you want to connect.
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If the optional third parameter is not specified, PHP uses the
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environment variables ORACLE_SID (Oracle instance) or TWO_TASK
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(tnsnames.ora) to determine which database to connect to.
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</para>
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<para>Connections are shared at the page level when using
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<function>ocilogon</function>. This means that commits and
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rollbacks apply to all open transactions in the page, even if you
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have created multiple connections.
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</para>
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<para>
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This example demonstrates how the connections are shared.
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<example>
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<title><function>ocilogon</function> example</title>
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<programlisting>
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<![CDATA[
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<?php
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print "<HTML><PRE>";
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$db = "";
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$c1 = ocilogon("scott","tiger",$db);
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$c2 = ocilogon("scott","tiger",$db);
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function create_table($conn)
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{ $stmt = ociparse($conn,"create table scott.hallo (test varchar2(64))");
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ociexecute($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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{ $stmt = ociparse($conn,"drop table scott.hallo");
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ociexecute($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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{ $stmt = ociparse($conn,"insert into scott.hallo
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values('$conn' || ' ' || to_char(sysdate,'DD-MON-YY HH24:MI:SS'))");
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ociexecute($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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{ $stmt = ociparse($conn,"delete from scott.hallo");
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ociexecute($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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{ ocicommit($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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{ ocirollback($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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{ $stmt = ociparse($conn,"select * from scott.hallo");
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ociexecute($stmt,OCI_DEFAULT);
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echo $conn."----selecting\n\n";
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while (ocifetch($stmt))
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echo $conn." <".ociresult($stmt,"TEST").">\n\n";
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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($c1); // Insert a row using c1
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insert_data($c2); // Insert a row using c2
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select_data($c1); // Results of both inserts are returned
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select_data($c2);
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rollback($c1); // Rollback using c1
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select_data($c1); // Both inserts have been rolled back
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select_data($c2);
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insert_data($c2); // Insert a row using c2
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commit($c2); // Commit using c2
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select_data($c1); // Result of c2 insert is returned
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delete_data($c1); // Delete all rows in table using c1
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select_data($c1); // No rows returned
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select_data($c2); // No rows returned
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commit($c1); // Commit using c1
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select_data($c1); // No rows returned
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select_data($c2); // No rows returned
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drop_table($c1);
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print "</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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<simpara>
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See also <function>ociplogon</function> and
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<function>ocinlogon</function>.</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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