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89 lines
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HTML
89 lines
6.9 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>Move internal result pointer</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.fbsql-data-seek" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">fbsql_data_seek</h1>
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<p class="verinfo">(PHP 4 >= 4.0.6, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">fbsql_data_seek</span> — <span class="dc-title">Move internal result pointer</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.fbsql-data-seek-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>fbsql_data_seek</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$row_number</code></span>
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) : <span class="type">bool</span></div>
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<p class="para rdfs-comment">
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Moves the internal row pointer of the FrontBase result associated with the
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specified result identifier to point to the specified row number.
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</p>
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<p class="para">
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The next call to <span class="function"><a href="fbsql_fetch_row.html" class="function">fbsql_fetch_row()</a></span> would return that
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row.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.fbsql-data-seek-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">
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result</code></dt>
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<dd>
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<p class="para">由 <span class="function"><a href="fbsql_query.html" class="function">fbsql_query()</a></span>
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或 <span class="function"><a href="fbsql_db_query.html" class="function">fbsql_db_query()</a></span> 返回的结果标识符。</p></dd>
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<dt>
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<code class="parameter">row_number</code></dt>
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<dd>
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<p class="para">
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The row number. Starts at 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.fbsql-data-seek-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <strong><code>FALSE</code></strong>。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.fbsql-data-seek-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-1209">
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<p><strong>Example #1 <span class="function"><strong>fbsql_data_seek()</strong></span> example</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 />$link </span><span style="color: #007700">= </span><span style="color: #0000BB">fbsql_pconnect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"_SYSTEM"</span><span style="color: #007700">, </span><span style="color: #DD0000">"secret"</span><span style="color: #007700">)<br /> or die(</span><span style="color: #DD0000">"Could not connect"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">fbsql_select_db</span><span style="color: #007700">(</span><span style="color: #DD0000">"samp_db"</span><span style="color: #007700">)<br /> or die(</span><span style="color: #DD0000">"Could not select database"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">"SELECT last_name, first_name FROM friends;"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">fbsql_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</span><span style="color: #007700">)<br /> or die(</span><span style="color: #DD0000">"Query failed"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// fetch rows in reverse order<br /><br /></span><span style="color: #007700">for (</span><span style="color: #0000BB">$i </span><span style="color: #007700">= </span><span style="color: #0000BB">fbsql_num_rows</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">) - </span><span style="color: #0000BB">1</span><span style="color: #007700">; </span><span style="color: #0000BB">$i </span><span style="color: #007700">>=</span><span style="color: #0000BB">0</span><span style="color: #007700">; </span><span style="color: #0000BB">$i</span><span style="color: #007700">--) {<br /> if (!</span><span style="color: #0000BB">fbsql_data_seek</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">, </span><span style="color: #0000BB">$i</span><span style="color: #007700">)) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Cannot seek to row %d\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$i</span><span style="color: #007700">);<br /> continue;<br /> }<br /><br /> if (!(</span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">fbsql_fetch_object</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">)))<br /> continue;<br /><br /> echo </span><span style="color: #0000BB">$row</span><span style="color: #007700">-></span><span style="color: #0000BB">last_name </span><span style="color: #007700">. </span><span style="color: #0000BB">$row</span><span style="color: #007700">-></span><span style="color: #0000BB">first_name </span><span style="color: #007700">. </span><span style="color: #DD0000">"<br />\n"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">fbsql_free_result</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</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></div></div></body></html> |