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  <refentry id="function.pg-num-fields">
   <refnamediv>
    <refname>pg_num_fields</refname> 
    <refpurpose>Returns the number of fields</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>int</type><methodname>pg_num_fields</methodname>
      <methodparam><type>resource</type><parameter>result</parameter></methodparam>
     </methodsynopsis>
    <para>
     <function>pg_num_fields</function> returns the number of fields
     (columns) in a PostgreSQL <parameter>result</parameter>. The
     argument is a result resource returned by
     <function>pg_query</function>. This function will return -1 on
     error.
    </para>
    <note>
     <para>
      This function used to be called <literal>pg_numfields()</literal>.
     </para>
    </note>
    <para>
     See also <function>pg_num_rows</function> and
     <function>pg_affected_rows</function>.
    </para>
   </refsect1>
  </refentry>

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