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149 lines
12 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Opens a connection to a Microsoft SQL Server database</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.sqlsrv-connect" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">sqlsrv_connect</h1>
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<p class="verinfo">(No version information available, might only be in Git)</p><p class="refpurpose"><span class="refname">sqlsrv_connect</span> — <span class="dc-title">Opens a connection to a Microsoft SQL Server database</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.sqlsrv-connect-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>sqlsrv_connect</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$serverName</code></span>
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[, <span class="methodparam"><span class="type">array</span> <code class="parameter">$connectionInfo</code></span>
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] ) : <span class="type">resource</span></div>
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<p class="para rdfs-comment">
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Opens a connection to a Microsoft SQL Server database. By default, the connection
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is attempted using Windows Authentication. To connect using SQL Server
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Authentication, include "UID" and "PWD" in the connection options array.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.sqlsrv-connect-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">serverName</code></dt>
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<dd>
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<p class="para">
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The name of the server to which a connection is established. To connect
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to a specific instance, follow the server name with a backward slash
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and the instance name (e.g. serverName\sqlexpress).
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</p>
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</dd>
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<dt>
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<code class="parameter">connectionInfo</code></dt>
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<dd>
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<p class="para">
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An associative array that specifies options for connecting to the server.
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If values for the UID and PWD keys are not specified, the connection
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will be attempted using Windows Authentication. For a complete list of supported
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keys, see <a href="http://msdn.microsoft.com/en-us/library/ff628167.aspx" class="link external">» SQLSRV Connection Options</a>.
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.sqlsrv-connect-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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A connection resource. If a connection cannot be successfully opened, <strong><code>FALSE</code></strong> is returned.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.sqlsrv-connect-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-2571">
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<p><strong>Example #1 Connect using Windows Authentication.</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$serverName </span><span style="color: #007700">= </span><span style="color: #DD0000">"serverName\\sqlexpress"</span><span style="color: #007700">; </span><span style="color: #FF8000">//serverName\instanceName<br /><br />// Since UID and PWD are not specified in the $connectionInfo array,<br />// The connection will be attempted using Windows Authentication.<br /></span><span style="color: #0000BB">$connectionInfo </span><span style="color: #007700">= array( </span><span style="color: #DD0000">"Database"</span><span style="color: #007700">=></span><span style="color: #DD0000">"dbName"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">sqlsrv_connect</span><span style="color: #007700">( </span><span style="color: #0000BB">$serverName</span><span style="color: #007700">, </span><span style="color: #0000BB">$connectionInfo</span><span style="color: #007700">);<br /><br />if( </span><span style="color: #0000BB">$conn </span><span style="color: #007700">) {<br /> echo </span><span style="color: #DD0000">"Connection established.<br />"</span><span style="color: #007700">;<br />}else{<br /> echo </span><span style="color: #DD0000">"Connection could not be established.<br />"</span><span style="color: #007700">;<br /> die( </span><span style="color: #0000BB">print_r</span><span style="color: #007700">( </span><span style="color: #0000BB">sqlsrv_errors</span><span style="color: #007700">(), </span><span style="color: #0000BB">true</span><span style="color: #007700">));<br />}<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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<p class="para">
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<div class="example" id="example-2572">
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<p><strong>Example #2 Connect by specifying a user name and password.</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$serverName </span><span style="color: #007700">= </span><span style="color: #DD0000">"serverName\\sqlexpress"</span><span style="color: #007700">; </span><span style="color: #FF8000">//serverName\instanceName<br /></span><span style="color: #0000BB">$connectionInfo </span><span style="color: #007700">= array( </span><span style="color: #DD0000">"Database"</span><span style="color: #007700">=></span><span style="color: #DD0000">"dbName"</span><span style="color: #007700">, </span><span style="color: #DD0000">"UID"</span><span style="color: #007700">=></span><span style="color: #DD0000">"userName"</span><span style="color: #007700">, </span><span style="color: #DD0000">"PWD"</span><span style="color: #007700">=></span><span style="color: #DD0000">"password"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">sqlsrv_connect</span><span style="color: #007700">( </span><span style="color: #0000BB">$serverName</span><span style="color: #007700">, </span><span style="color: #0000BB">$connectionInfo</span><span style="color: #007700">);<br /><br />if( </span><span style="color: #0000BB">$conn </span><span style="color: #007700">) {<br /> echo </span><span style="color: #DD0000">"Connection established.<br />"</span><span style="color: #007700">;<br />}else{<br /> echo </span><span style="color: #DD0000">"Connection could not be established.<br />"</span><span style="color: #007700">;<br /> die( </span><span style="color: #0000BB">print_r</span><span style="color: #007700">( </span><span style="color: #0000BB">sqlsrv_errors</span><span style="color: #007700">(), </span><span style="color: #0000BB">true</span><span style="color: #007700">));<br />}<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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<p class="para">
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<div class="example" id="example-2573">
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<p><strong>Example #3 Connect on a specifed port.</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$serverName </span><span style="color: #007700">= </span><span style="color: #DD0000">"serverName\\sqlexpress, 1542"</span><span style="color: #007700">; </span><span style="color: #FF8000">//serverName\instanceName, portNumber (default is 1433)<br /></span><span style="color: #0000BB">$connectionInfo </span><span style="color: #007700">= array( </span><span style="color: #DD0000">"Database"</span><span style="color: #007700">=></span><span style="color: #DD0000">"dbName"</span><span style="color: #007700">, </span><span style="color: #DD0000">"UID"</span><span style="color: #007700">=></span><span style="color: #DD0000">"userName"</span><span style="color: #007700">, </span><span style="color: #DD0000">"PWD"</span><span style="color: #007700">=></span><span style="color: #DD0000">"password"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">sqlsrv_connect</span><span style="color: #007700">( </span><span style="color: #0000BB">$serverName</span><span style="color: #007700">, </span><span style="color: #0000BB">$connectionInfo</span><span style="color: #007700">);<br /><br />if( </span><span style="color: #0000BB">$conn </span><span style="color: #007700">) {<br /> echo </span><span style="color: #DD0000">"Connection established.<br />"</span><span style="color: #007700">;<br />}else{<br /> echo </span><span style="color: #DD0000">"Connection could not be established.<br />"</span><span style="color: #007700">;<br /> die( </span><span style="color: #0000BB">print_r</span><span style="color: #007700">( </span><span style="color: #0000BB">sqlsrv_errors</span><span style="color: #007700">(), </span><span style="color: #0000BB">true</span><span style="color: #007700">));<br />}<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 notes" id="refsect1-function.sqlsrv-connect-notes">
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<h3 class="title">注释</h3>
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<p class="para">
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By default, the <span class="function"><strong>sqlsrv_connect()</strong></span> uses connection pooling to
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improve connection performance. To turn off connection pooling (i.e. force a
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new connection on each call), set the "ConnectionPooling" option in the
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$connectionOptions array to 0 (or <strong><code>FALSE</code></strong>). For more information, see
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<a href="http://msdn.microsoft.com/en-us/library/cc644930.aspx" class="link external">» SQLSRV Connection Pooling</a>.
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</p>
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<p class="para">
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The SQLSRV extension does not have a dedicated function for changing which
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database is connected to. The target database is specified in the
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$connectionOptions array that is passed to sqlsrv_connect. To change the
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database on an open connection, execute the following query "USE dbName"
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(e.g. sqlsrv_query($conn, "USE dbName")).
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.sqlsrv-connect-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="sqlsrv_close.html" class="function" rel="rdfs-seeAlso">sqlsrv_close()</a> - Closes an open connection and releases resourses associated with the connection</span></li>
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<li class="member"><span class="function"><a href="sqlsrv_errors.html" class="function" rel="rdfs-seeAlso">sqlsrv_errors()</a> - Returns error and warning information about the last SQLSRV operation performed</span></li>
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<li class="member"><span class="function"><a href="sqlsrv_query.html" class="function" rel="rdfs-seeAlso">sqlsrv_query()</a> - Prepares and executes a query</span></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |