mysqli.real-connect.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Opens a connection to a mysql server</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="mysqli.query.html">mysqli::query</a></div> <div class="next" style="text-align: right; float: right;"><a href="mysqli.real-escape-string.html">mysqli::real_escape_string</a></div> <div class="up"><a href="class.mysqli.html">MySQLi</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="mysqli.real-connect" class="refentry"> <div class="refnamediv"> <h1 class="refname">mysqli::real_connect</h1> <h1 class="refname">mysqli_real_connect</h1> <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">mysqli::real_connect</span> -- <span class="refname">mysqli_real_connect</span> — <span class="dc-title">Opens a connection to a mysql server</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <p class="para">Object oriented style (method)</p> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><b>mysqli::real_connect</b></b></span> ([ <span class="methodparam"><span class="type">string</span> <tt class="parameter">$host</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$username</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$passwd</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$dbname</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$port</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$socket</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$flags</tt></span> ]]]]]]] )</div> <p class="para rdfs-comment">Procedural style</p> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><b>mysqli_real_connect</b></b></span> ( <span class="methodparam"><span class="type"><a href="class.mysqli.html" class="type mysqli">mysqli</a></span> <tt class="parameter">$link</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$host</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$username</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$passwd</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$dbname</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$port</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$socket</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$flags</tt></span> ]]]]]]] )</div> <p class="para rdfs-comment"> Establish a connection to a MySQL database engine. </p> <p class="para"> This function differs from <a href="mysqli.connect.html" class="function">mysqli_connect()</a>: </p> <ul class="itemizedlist"> <li class="listitem"> <p class="para"> <b>mysqli_real_connect()</b> needs a valid object which has to be created by function <a href="mysqli.init.html" class="function">mysqli_init()</a>. </p> </li> <li class="listitem"> <p class="para"> With function <a href="mysqli.options.html" class="function">mysqli_options()</a> you can set various options for connection. </p> </li> <li class="listitem"> <p class="para"> There is a <i><tt class="parameter">flags</tt></i> parameter. </p> </li> </ul> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt><span class="term"><i><tt class="parameter">link</tt></i></span><dd><p class="para">Procedural style only: A link identifierreturned by <a href="mysqli.connect.html" class="function">mysqli_connect()</a> or <a href="mysqli.init.html" class="function">mysqli_init()</a></p></dd></dt> <dt> <span class="term"><i><tt class="parameter">host</tt></i></span> <dd> <p class="para"> Can be either a host name or an IP address. Passing the <b><tt>NULL</tt></b> value or the string "localhost" to this parameter, the local host is assumed. When possible, pipes will be used instead of the TCP/IP protocol. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">username</tt></i></span> <dd> <p class="para"> The MySQL user name. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">passwd</tt></i></span> <dd> <p class="para"> If provided or <b><tt>NULL</tt></b>, the MySQL server will attempt to authenticate the user against those user records which have no password only. This allows one username to be used with different permissions (depending on if a password as provided or not). </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">dbname</tt></i></span> <dd> <p class="para"> If provided will specify the default database to be used when performing queries. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">port</tt></i></span> <dd> <p class="para"> Specifies the port number to attempt to connect to the MySQL server. </p> </dd>⌨️ 快捷键说明
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