<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >pg_field_num</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PHP 手册" HREF="index.html"><LINK REL="UP" TITLE="PostgreSQL 数据库函数" HREF="ref.pgsql.html"><LINK REL="PREVIOUS" TITLE="pg_field_name" HREF="function.pg-field-name.html"><LINK REL="NEXT" TITLE="pg_field_prtlen" HREF="function.pg-field-prtlen.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP 手册</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.pg-field-name.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.pg-field-prtlen.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.pg-field-num" ></A >pg_field_num</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN185432" ></A ><P > (PHP 4 >= 4.2.0, PHP 5)</P >pg_field_num -- 返回字段的编号</DIV ><DIV CLASS="refsect1" ><A NAME="AEN185435" ></A ><H2 >说明</H2 >int <B CLASS="methodname" >pg_field_num</B > ( resource result, string field_name )<BR ></BR ><P > <B CLASS="function" >pg_field_num()</B > 返回给定 PostgreSQL <CODE CLASS="parameter" >result</CODE > 资源中的 <CODE CLASS="parameter" >field_name</CODE > 所代表的列(字段)的编号。字段编号从 0 开始。如果出错本函数返回 -1。 </P ><P > 例子参见 <A HREF="function.pg-field-name.html" ><B CLASS="function" >pg_field_name()</B ></A > 页。 </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B > 本函数以前的名字为 <TT CLASS="literal" >pg_fieldnum()</TT >。 </P ></BLOCKQUOTE ></DIV ><P > 参见 <A HREF="function.pg-field-name.html" ><B CLASS="function" >pg_field_name()</B ></A >。 </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.pg-field-name.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >起始页</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.pg-field-prtlen.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >pg_field_name</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.pgsql.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >pg_field_prtlen</TD ></TR ></TABLE ></DIV ></BODY ></HTML >