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docs/php/ingres_result_seek.html
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<!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>Set the row position before fetching data</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.ingres-result-seek" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">ingres_result_seek</h1>
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<p class="verinfo">(PECL ingres >= 2.1.0)</p><p class="refpurpose"><span class="refname">ingres_result_seek</span> — <span class="dc-title">Set the row position before fetching data</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.ingres-result-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>ingres_result_seek</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$position</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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This function is used to position the cursor associated with the result
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resource before issuing a fetch. If <a href="ingres.configuration.html#ini.ingres.array-index-start" class="link">ingres.array_index_start</a>
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is set to 0 then the first row is 0 else it is 1.
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<span class="function"><strong>ingres_result_seek()</strong></span> can be used only with queries that
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make use of <a href="ingres.configuration.html#ini.ingres.scrollable" class="link">scrollable
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cursors</a>. It cannot be used with
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<span class="function"><a href="ingres_unbuffered_query.html" class="function">ingres_unbuffered_query()</a></span>.
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</p>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<strong>Related Configurations</strong><br />
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<p class="para">
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See also the <a href="ingres.configuration.html#ini.ingres.scrollable" class="link">ingres.scrollable</a>
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and <a href="ingres.configuration.html#ini.ingres.array-index-start" class="link">ingres.array_index_start</a> directives in
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<a href="ingres.configuration.html" class="link">Runtime Configuration</a>.
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</p>
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</p></blockquote>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.ingres-result-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">result</code></dt>
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<dd>
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<p class="para">
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The result identifier for a query
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</p>
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</dd>
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<dt>
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<code class="parameter">position</code></dt>
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<dd>
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<p class="para">
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The row to position the cursor on. If <a href="ingres.configuration.html#ini.ingres.array-index-start" class="link">ingres.array_index_start</a>
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is set to 0, then the first row is 0, else it is 1
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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.ingres-result-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.ingres-result-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-1313">
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<p><strong>Example #1 Position the cursor on the 3rd row</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 /><br />$result</span><span style="color: #007700">=</span><span style="color: #0000BB">ingres_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"select * from airport where ap_ccode = 'ES' order by ap_place asc"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* goto row 3 */<br /></span><span style="color: #007700">if (!</span><span style="color: #0000BB">ingres_result_seek</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">, </span><span style="color: #0000BB">3</span><span style="color: #007700">))<br />{<br /> echo </span><span style="color: #0000BB">ingres_errno</span><span style="color: #007700">() . </span><span style="color: #DD0000">" - " </span><span style="color: #007700">. </span><span style="color: #0000BB">ingres_error </span><span style="color: #007700">. </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /> die(</span><span style="color: #DD0000">"i died"</span><span style="color: #007700">);<br />}<br />else<br />{<br /> </span><span style="color: #0000BB">$airport </span><span style="color: #007700">= </span><span style="color: #0000BB">ingres_fetch_object </span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br /> {<br /> echo </span><span style="color: #0000BB">$airport</span><span style="color: #007700">-></span><span style="color: #0000BB">ap_iatacode </span><span style="color: #007700">. </span><span style="color: #DD0000">" - " </span><span style="color: #007700">. </span><span style="color: #0000BB">$airport</span><span style="color: #007700">-></span><span style="color: #0000BB">ap_name </span><span style="color: #007700">. </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /> }<br />}<br /><br /></span><span style="color: #0000BB">ingres_commit</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</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 seealso" id="refsect1-function.ingres-result-seek-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="ingres_query.html" class="function" rel="rdfs-seeAlso">ingres_query()</a> - Send an SQL query to Ingres</span></li>
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<li class="member"><span class="function"><a href="ingres_fetch_array.html" class="function" rel="rdfs-seeAlso">ingres_fetch_array()</a> - Fetch a row of result into an array</span></li>
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<li class="member"><span class="function"><a href="ingres_fetch_assoc.html" class="function" rel="rdfs-seeAlso">ingres_fetch_assoc()</a> - Fetch a row of result into an associative array</span></li>
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<li class="member"><span class="function"><a href="ingres_fetch_object.html" class="function" rel="rdfs-seeAlso">ingres_fetch_object()</a> - Fetch a row of result into an object</span></li>
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<li class="member"><span class="function"><a href="ingres_fetch_row.html" class="function" rel="rdfs-seeAlso">ingres_fetch_row()</a> - Fetch a row of result into an enumerated array</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>
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