<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >pg_connection_busy</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_connect" HREF="function.pg-connect.html"><LINK REL="NEXT" TITLE="pg_connection_reset" HREF="function.pg-connection-reset.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-connect.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-connection-reset.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.pg-connection-busy" ></A >pg_connection_busy</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN184706" ></A ><P > (PHP 4 >= 4.2.0, PHP 5)</P >pg_connection_busy -- 获知连接是否为忙 </DIV ><DIV CLASS="refsect1" ><A NAME="AEN184709" ></A ><H2 >说明</H2 >bool <B CLASS="methodname" >pg_connection_busy</B > ( resource connection )<BR ></BR ><P > <B CLASS="function" >pg_connection_busy()</B > 在此连接状态为忙的时候返回 <TT CLASS="constant" ><B >TRUE</B ></TT >。如果连接状态为忙,说明前一个查询仍然在执行。如果调用 <A HREF="function.pg-get-result.html" ><B CLASS="function" >pg_get_result()</B ></A > 函数的话,则会被锁死。 </P ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN184722" ></A ><P ><B >例 1. <B CLASS="function" >pg_connection_busy()</B > 例子</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /> $dbconn </font><font color="#007700">= </font><font color="#0000BB">pg_connect</font><font color="#007700">(</font><font color="#DD0000">"dbname=publisher"</font><font color="#007700">) or die(</font><font color="#DD0000">"Could not connect"</font><font color="#007700">);<br /> </font><font color="#0000BB">$bs </font><font color="#007700">= </font><font color="#0000BB">pg_connection_busy</font><font color="#007700">(</font><font color="#0000BB">$dbconn</font><font color="#007700">);<br /> if (</font><font color="#0000BB">$bs</font><font color="#007700">) {<br /> echo </font><font color="#DD0000">'connection is busy'</font><font color="#007700">;<br /> }<br /> else {<br /> echo </font><font color="#DD0000">'connection is not busy'</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-connection-status.html" ><B CLASS="function" >pg_connection_status()</B ></A > 和 <A HREF="function.pg-get-result.html" ><B CLASS="function" >pg_get_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-connect.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-connection-reset.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >pg_connect</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_connection_reset</TD ></TR ></TABLE ></DIV ></BODY ></HTML >