<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >pg_fetch_assoc</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_fetch_array" HREF="function.pg-fetch-array.html"><LINK REL="NEXT" TITLE="pg_fetch_object" HREF="function.pg-fetch-object.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-fetch-array.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-fetch-object.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.pg-fetch-assoc" ></A >pg_fetch_assoc</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN185217" ></A ><P > (PHP 4 >= 4.3.0, PHP 5)</P >pg_fetch_assoc -- 提取一行作为关联数组</DIV ><DIV CLASS="refsect1" ><A NAME="AEN185220" ></A ><H2 >说明</H2 >array <B CLASS="methodname" >pg_fetch_assoc</B > ( resource result [, int row] )<BR ></BR ><P > <B CLASS="function" >pg_fetch_assoc()</B > 和调用 <A HREF="function.pg-fetch-array.html" ><B CLASS="function" >pg_fetch_array()</B ></A > 加上第三个可选参数 PGSQL_ASSOC 是等价的。它只返回一个关联数组。如果需要数字索引,用 <A HREF="function.pg-fetch-row.html" ><B CLASS="function" >pg_fetch_row()</B ></A >。 </P ><P > <B CLASS="function" >pg_fetch_assoc()</B > 是 <A HREF="function.pg-fetch-row.html" ><B CLASS="function" >pg_fetch_row()</B ></A > 的扩展版本。除了将数据存储在数字索引(字段编号)之外,默认还将数组存储在关联索引(字段名)中。 </P ><P > <CODE CLASS="parameter" >row</CODE > 是要被提取的行(记录)编号。第一行为 0。 </P ><P > <B CLASS="function" >pg_fetch_assoc()</B > 并不明显比 <A HREF="function.pg-fetch-row.html" ><B CLASS="function" >pg_fetch_row()</B ></A > 慢,而且还显著更便于使用。 </P ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN185244" ></A ><P ><B >例 1. <B CLASS="function" >pg_fetch_assoc()</B > 例子</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$conn </font><font color="#007700">= </font><font color="#0000BB">pg_pconnect</font><font color="#007700">(</font><font color="#DD0000">"dbname=publisher"</font><font color="#007700">);<br />if (!</font><font color="#0000BB">$conn</font><font color="#007700">) {<br /> echo </font><font color="#DD0000">"An error occured.\n"</font><font color="#007700">;<br /> exit;<br />}<br /><br /></font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">pg_query</font><font color="#007700">(</font><font color="#0000BB">$conn</font><font color="#007700">, </font><font color="#DD0000">"SELECT id, author, email FROM authors"</font><font color="#007700">);<br />if (!</font><font color="#0000BB">$result</font><font color="#007700">) {<br /> echo </font><font color="#DD0000">"An error occured.\n"</font><font color="#007700">;<br /> exit;<br />}<br />while (</font><font color="#0000BB">$row </font><font color="#007700">= </font><font color="#0000BB">pg_fetch_assoc</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">)) {<br /> echo </font><font color="#0000BB">$row</font><font color="#007700">[</font><font color="#DD0000">'id'</font><font color="#007700">];<br /> echo </font><font color="#0000BB">$row</font><font color="#007700">[</font><font color="#DD0000">'author'</font><font color="#007700">];<br /> echo </font><font color="#0000BB">$row</font><font color="#007700">[</font><font color="#DD0000">'email'</font><font color="#007700">];<br />}<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > 参见 <A HREF="function.pg-fetch-row.html" ><B CLASS="function" >pg_fetch_row()</B ></A >,<A HREF="function.pg-fetch-array.html" ><B CLASS="function" >pg_fetch_array()</B ></A >,<A HREF="function.pg-fetch-object.html" ><B CLASS="function" >pg_fetch_object()</B ></A > 和 <A HREF="function.pg-fetch-result.html" ><B CLASS="function" >pg_fetch_result()</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-fetch-array.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 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