<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >msql_pconnect</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="mSQL Functions" HREF="ref.msql.html"><LINK REL="PREVIOUS" TITLE="msql_numrows" HREF="function.msql-numrows.html"><LINK REL="NEXT" TITLE="msql_query" HREF="function.msql-query.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.msql-numrows.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.msql-query.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.msql-pconnect" ></A >msql_pconnect</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN130927" ></A ><P > (PHP 3, PHP 4, PHP 5)</P >msql_pconnect -- Open persistent mSQL connection</DIV ><DIV CLASS="refsect1" ><A NAME="AEN130930" ></A ><H2 >说明</H2 >resource <B CLASS="methodname" >msql_pconnect</B > ( [string hostname] )<BR ></BR ><P > <B CLASS="function" >msql_pconnect()</B > acts very much like <A HREF="function.msql-connect.html" ><B CLASS="function" >msql_connect()</B ></A > with two major differences. </P ><P > First, when connecting, the function would first try to find a (persistent) link that's already open with the same host. If one is found, an identifier for it will be returned instead of opening a new connection. </P ><P > Second, the connection to the SQL server will not be closed when the execution of the script ends. Instead, the link will remain open for future use (<A HREF="function.msql-close.html" ><B CLASS="function" >msql_close()</B ></A > will not close links established by this function). </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN130944" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >hostname</CODE ></DT ><DD ><P > The hostname can also include a port number. e.g. <TT CLASS="literal" >hostname,port</TT >. </P ><P > If not specified, the connection is established by the means of a Unix domain socket, being then more efficient then a localhost TCP socket connection. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B > While this function will accept a colon (<TT CLASS="literal" >:</TT >) as a host/port separator, a comma (<TT CLASS="literal" >,</TT >) is the preferred method. </P ></BLOCKQUOTE ></DIV ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN130959" ></A ><H2 >返回值</H2 ><P > Returns a positive mSQL link identifier on success, or <TT CLASS="constant" ><B >FALSE</B ></TT > on error. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN130963" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.msql-connect.html" ><B CLASS="function" >msql_connect()</B ></A ></TD ></TR ><TR ><TD ><A HREF="function.msql-close.html" ><B CLASS="function" >msql_close()</B ></A ></TD ></TR ></TBODY ></TABLE ><P ></P > </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.msql-numrows.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.msql-query.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >msql_numrows</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.msql.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >msql_query</TD ></TR ></TABLE ></DIV ></BODY ></HTML >