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161 lines
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HTML
161 lines
7.5 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>Connect to a datasource</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.odbc-connect" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">odbc_connect</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">odbc_connect</span> — <span class="dc-title">Connect to a datasource</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.odbc-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>odbc_connect</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$dsn</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$user</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$password</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$cursor_type</code></span>
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] ) : <span class="type">resource</span></div>
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<p class="simpara">
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The connection id returned by this functions is needed by other
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ODBC functions. You can have multiple connections open at once as long as
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they either use different db or different credentials.
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</p>
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<p class="simpara">
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With some ODBC drivers, executing a complex stored procedure may
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fail with an error similar to: "Cannot open a cursor on a stored
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procedure that has anything other than a single select statement
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in it". Using SQL_CUR_USE_ODBC may avoid that error. Also, some
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drivers don't support the optional row_number parameter in
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<span class="function"><a href="odbc_fetch_row.html" class="function">odbc_fetch_row()</a></span>. SQL_CUR_USE_ODBC might help
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in that case, too.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.odbc-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">dsn</code></dt>
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<dd>
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<p class="para">
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The database source name for the connection. Alternatively, a
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DSN-less connection string can be used.
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</p>
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</dd>
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<dt>
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<code class="parameter">user</code></dt>
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<dd>
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<p class="para">
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The username.
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</p>
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</dd>
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<dt>
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<code class="parameter">password</code></dt>
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<dd>
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<p class="para">
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The password.
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</p>
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</dd>
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<dt>
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<code class="parameter">cursor_type</code></dt>
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<dd>
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<p class="para">
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This sets the type of cursor to be used
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for this connection. This parameter is not normally needed, but
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can be useful for working around problems with some ODBC drivers.
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</p>
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<span class="simpara">
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The following constants are defined for cursortype:
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</span>
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<p class="para">
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<ul class="itemizedlist">
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<li class="listitem">
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<span class="simpara">
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SQL_CUR_USE_IF_NEEDED
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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SQL_CUR_USE_ODBC
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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SQL_CUR_USE_DRIVER
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</span>
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</li>
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</ul>
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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.odbc-connect-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns an ODBC connection or (<strong><code>FALSE</code></strong>) on error.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.odbc-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-980">
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<p><strong>Example #1 DSN-less connections</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 /></span><span style="color: #FF8000">// Microsoft SQL Server using the SQL Native Client 10.0 ODBC Driver - allows connection to SQL 7, 2000, 2005 and 2008<br /></span><span style="color: #0000BB">$connection </span><span style="color: #007700">= </span><span style="color: #0000BB">odbc_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"Driver={SQL Server Native Client 10.0};Server=</span><span style="color: #0000BB">$server</span><span style="color: #DD0000">;Database=</span><span style="color: #0000BB">$database</span><span style="color: #DD0000">;"</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Microsoft Access<br /></span><span style="color: #0000BB">$connection </span><span style="color: #007700">= </span><span style="color: #0000BB">odbc_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"Driver={Microsoft Access Driver (*.mdb)};Dbq=</span><span style="color: #0000BB">$mdbFilename</span><span style="color: #DD0000">"</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Microsoft Excel<br /></span><span style="color: #0000BB">$excelFile </span><span style="color: #007700">= </span><span style="color: #0000BB">realpath</span><span style="color: #007700">(</span><span style="color: #DD0000">'C:/ExcelData.xls'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$excelDir </span><span style="color: #007700">= </span><span style="color: #0000BB">dirname</span><span style="color: #007700">(</span><span style="color: #0000BB">$excelFile</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$connection </span><span style="color: #007700">= </span><span style="color: #0000BB">odbc_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"Driver={Microsoft Excel Driver (*.xls)};DriverId=790;Dbq=</span><span style="color: #0000BB">$excelFile</span><span style="color: #DD0000">;DefaultDir=</span><span style="color: #0000BB">$excelDir</span><span style="color: #DD0000">" </span><span style="color: #007700">, </span><span style="color: #DD0000">''</span><span style="color: #007700">, </span><span style="color: #DD0000">''</span><span style="color: #007700">);<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 seealso" id="refsect1-function.odbc-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">For persistent connections: <span class="function"><a href="odbc_pconnect.html" class="function" rel="rdfs-seeAlso">odbc_pconnect()</a> - Open a persistent database connection</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> |