php-doc-en/reference/pgsql/functions/pg-last-oid.xml

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<refentry id="function.pg-last-oid">
 <refnamediv>
  <refname>pg_last_oid</refname> 
  <refpurpose>Returns the last object's oid</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>string</type><methodname>pg_last_oid</methodname>
   <methodparam><type>resource</type><parameter>result</parameter></methodparam>
  </methodsynopsis>
  <para>
   <function>pg_last_oid</function> is used to retrieve the
   <varname>oid</varname> assigned to an inserted tuple (record) if
   the result resource is used from the last command sent via
   <function>pg_query</function> and was an SQL INSERT.  Returns a
   positive number if there was a valid <varname>oid</varname>.  It
   returns &false; if an error occurs or the last command sent via
   <function>pg_query</function> was not an INSERT or INSERT is
   failed.
  </para>
  <para>
   OID field became an optional field from PostgreSQL 7.2. When 
   OID field is not defined in a table, programmer must use 
   <function>pg_result_status</function> to check if record
   is inserted successfully or not.
  </para>
  <note>
   <para>
    This function used to be called <function>pg_getlastoid</function>.
   </para>
  </note>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>pg_query</function></member>
    <member><function>pg_result_status</function></member>
   </simplelist>
  </para>
 </refsect1>
</refentry>

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