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135 lines
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135 lines
10 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>Makes the next row in a result set available for reading</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-fetch" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">sqlsrv_fetch</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_fetch</span> — <span class="dc-title">Makes the next row in a result set available for reading</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.sqlsrv-fetch-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_fetch</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$stmt</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$row</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$offset</code></span>
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]] ) : <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span></div>
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<p class="para rdfs-comment">
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Makes the next row in a result set available for reading. Use
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<span class="function"><a href="sqlsrv_get_field.html" class="function">sqlsrv_get_field()</a></span> to read the fields of the row.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.sqlsrv-fetch-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">stmt</code></dt>
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<dd>
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<p class="para">
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A statement resource created by executing <span class="function"><a href="sqlsrv_query.html" class="function">sqlsrv_query()</a></span>
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or <span class="function"><a href="sqlsrv_execute.html" class="function">sqlsrv_execute()</a></span>.
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</p>
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</dd>
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<dt>
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<code class="parameter">row</code></dt>
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<dd>
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<p class="para">
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The row to be accessed. This parameter can only be used if the specified
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statement was prepared with a scrollable cursor. In that case, this parameter
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can take on one of the following values:
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<ul class="simplelist">
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<li class="member">SQLSRV_SCROLL_NEXT</li>
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<li class="member">SQLSRV_SCROLL_PRIOR</li>
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<li class="member">SQLSRV_SCROLL_FIRST</li>
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<li class="member">SQLSRV_SCROLL_LAST</li>
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<li class="member">SQLSRV_SCROLL_ABSOLUTE</li>
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<li class="member">SQLSRV_SCROLL_RELATIVE</li>
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</ul>
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</p>
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</dd>
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<dt>
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<code class="parameter">offset</code></dt>
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<dd>
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<p class="para">
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Specifies the row to be accessed if the row parameter is set to
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<strong><code>SQLSRV_SCROLL_ABSOLUTE</code></strong> or
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<strong><code>SQLSRV_SCROLL_RELATIVE</code></strong>. Note that the first row in
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a result set has index 0.
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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-fetch-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns <strong><code>TRUE</code></strong> if the next row of a result set was successfully retrieved,
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<strong><code>FALSE</code></strong> if an error occurs, and <strong><code>NULL</code></strong> if there are no more rows in the result set.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.sqlsrv-fetch-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-2579">
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<p><strong>Example #1 <span class="function"><strong>sqlsrv_fetch()</strong></span> example</strong></p>
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<div class="example-contents"><p>
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The following example demonstrates how to retrieve a row with
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<span class="function"><strong>sqlsrv_fetch()</strong></span> and get the row fields with
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<span class="function"><a href="sqlsrv_get_field.html" class="function">sqlsrv_get_field()</a></span>.
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</p></div>
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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">;<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 />if( </span><span style="color: #0000BB">$conn </span><span style="color: #007700">=== </span><span style="color: #0000BB">false </span><span style="color: #007700">) {<br /> die( </span><span style="color: #0000BB">print_r</span><span style="color: #007700">( </span><span style="color: #0000BB">sqlsrv_errors</span><span style="color: #007700">(), </span><span style="color: #0000BB">true</span><span style="color: #007700">));<br />}<br /><br /></span><span style="color: #0000BB">$sql </span><span style="color: #007700">= </span><span style="color: #DD0000">"SELECT Name, Comment <br /> FROM Table_1<br /> WHERE ReviewID=1"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$stmt </span><span style="color: #007700">= </span><span style="color: #0000BB">sqlsrv_query</span><span style="color: #007700">( </span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #0000BB">$sql</span><span style="color: #007700">);<br />if( </span><span style="color: #0000BB">$stmt </span><span style="color: #007700">=== </span><span style="color: #0000BB">false </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 /><br /></span><span style="color: #FF8000">// Make the first (and in this case, only) row of the result set available for reading.<br /></span><span style="color: #007700">if( </span><span style="color: #0000BB">sqlsrv_fetch</span><span style="color: #007700">( </span><span style="color: #0000BB">$stmt </span><span style="color: #007700">) === </span><span style="color: #0000BB">false</span><span style="color: #007700">) {<br /> die( </span><span style="color: #0000BB">print_r</span><span style="color: #007700">( </span><span style="color: #0000BB">sqlsrv_errors</span><span style="color: #007700">(), </span><span style="color: #0000BB">true</span><span style="color: #007700">));<br />}<br /><br /></span><span style="color: #FF8000">// Get the row fields. Field indeces start at 0 and must be retrieved in order.<br />// Retrieving row fields by name is not supported by sqlsrv_get_field.<br /></span><span style="color: #0000BB">$name </span><span style="color: #007700">= </span><span style="color: #0000BB">sqlsrv_get_field</span><span style="color: #007700">( </span><span style="color: #0000BB">$stmt</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">);<br />echo </span><span style="color: #DD0000">"</span><span style="color: #0000BB">$name</span><span style="color: #DD0000">: "</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$comment </span><span style="color: #007700">= </span><span style="color: #0000BB">sqlsrv_get_field</span><span style="color: #007700">( </span><span style="color: #0000BB">$stmt</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$comment</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.sqlsrv-fetch-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_get_field.html" class="function" rel="rdfs-seeAlso">sqlsrv_get_field()</a> - Gets field data from the currently selected row</span></li>
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<li class="member"><span class="function"><a href="sqlsrv_fetch_array.html" class="function" rel="rdfs-seeAlso">sqlsrv_fetch_array()</a> - Returns a row as an array</span></li>
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<li class="member"><span class="function"><a href="sqlsrv_fetch_object.html" class="function" rel="rdfs-seeAlso">sqlsrv_fetch_object()</a> - Retrieves the next row of data in a result set as an object</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> |