<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >maxdb_connect</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="MaxDB PHP Extension" HREF="ref.maxdb.html"><LINK REL="PREVIOUS" TITLE="maxdb_connect_error" HREF="function.maxdb-connect-error.html"><LINK REL="NEXT" TITLE="maxdb_data_seek" HREF="function.maxdb-data-seek.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.maxdb-connect-error.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.maxdb-data-seek.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.maxdb-connect" ></A >maxdb_connect</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN110124" ></A ><P > (PECL)</P >maxdb_connect<P > (no version information, might be only in CVS)</P >maxdb() -- Open a new connection to the MaxDB server</DIV ><DIV CLASS="refsect1" ><A NAME="AEN110128" ></A ><H2 >Description</H2 ><P >Procedural style</P >resource <B CLASS="methodname" >maxdb_connect</B > ( [string host [, string username [, string passwd [, string dbname [, int port [, string socket]]]]]] )<BR ></BR ><P >Object oriented style (constructor):</P >class <B CLASS="classname" >maxdb</B > { <BR ></BR ><B CLASS="methodname" >__construct</B > ( [string host [, string username [, string passwd [, string dbname [, int port [, string socket]]]]]] )<BR ></BR >}<P > The <B CLASS="function" >maxdb_connect()</B > function attempts to open a connection to the MaxDB Server running on <CODE CLASS="parameter" >host</CODE > which can be either a host name or an IP address. Passing the string "localhost" to this parameter, the local host is assumed. If successful, the <B CLASS="function" >maxdb_connect()</B > will return an resource representing the connection to the database, or <TT CLASS="constant" ><B >FALSE</B ></TT > on failure. </P ><P > The <CODE CLASS="parameter" >username</CODE > and <CODE CLASS="parameter" >password</CODE > parameters specify the username and password under which to connect to the MaxDB server. If the password is not provided (the <TT CLASS="constant" ><B >NULL</B ></TT > value is passed), the MaxDB server will attempt to authenticate the user against the <CODE CLASS="parameter" >maxdb.default_pw</CODE > in <TT CLASS="filename" >php.ini</TT >. </P ><P > The <CODE CLASS="parameter" >dbname</CODE > parameter if provided will specify the default database to be used when performing queries. If not provied, the entry <CODE CLASS="parameter" >maxdb.default_db</CODE > in <TT CLASS="filename" >php.ini</TT > is used. </P ><P > The <CODE CLASS="parameter" >port</CODE > and <CODE CLASS="parameter" >socket</CODE > parameters are ignored for the MaxDB server. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN110194" ></A ><H2 >Return values</H2 ><P > Returns a resource which represents the connection to a MaxDB Server or <TT CLASS="constant" ><B >FALSE</B ></TT > if the connection failed. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN110198" ></A ><H2 >Example</H2 ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN110200" ></A ><P ><B >例 1. Object oriented style</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$maxdb </font><font color="#007700">= new </font><font color="#0000BB">maxdb</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"MONA"</font><font color="#007700">, </font><font color="#DD0000">"RED"</font><font color="#007700">, </font><font color="#DD0000">"DEMODB"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">maxdb_connect_errno</font><font color="#007700">()) {<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">maxdb_connect_error</font><font color="#007700">());<br /> exit();<br />}<br /><br /></font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Host information: %s\n"</font><font color="#007700">, </font><font color="#0000BB">$maxdb</font><font color="#007700">-></font><font color="#0000BB">host_info</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">$maxdb</font><font color="#007700">-></font><font color="#0000BB">close</font><font color="#007700">();<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN110203" ></A ><P ><B >例 2. Procedural style</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$link </font><font color="#007700">= </font><font color="#0000BB">maxdb_connect</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"MONA"</font><font color="#007700">, </font><font color="#DD0000">"RED"</font><font color="#007700">, </font><font color="#DD0000">"DEMODB"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (!</font><font color="#0000BB">$link</font><font color="#007700">) {<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">maxdb_connect_error</font><font color="#007700">());<br /> exit();<br />}<br /><br /></font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Host information: %s\n"</font><font color="#007700">, </font><font color="#0000BB">maxdb_get_host_info</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">));<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">maxdb_close</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE ><P > The above examples would produce the following output: </P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >Host information: localhost</PRE ></TD ></TR ></TABLE ></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.maxdb-connect-error.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.maxdb-data-seek.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >maxdb_connect_error</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.maxdb.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >maxdb_data_seek</TD ></TR ></TABLE ></DIV ></BODY ></HTML >