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149 lines
10 KiB
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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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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Returns an array, indexed by column name, representing a row in a result set</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.db2-fetch-assoc" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">db2_fetch_assoc</h1>
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<p class="verinfo">(PECL ibm_db2 >= 1.0.0)</p><p class="refpurpose"><span class="refname">db2_fetch_assoc</span> — <span class="dc-title">
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Returns an array, indexed by column name, representing a row in a result set
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</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.db2-fetch-assoc-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>db2_fetch_assoc</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_number</code><span class="initializer"> = -1</span></span>
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] ) : <span class="type">array</span></div>
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<p class="para rdfs-comment">
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Returns an array, indexed by column name, representing a row in a result
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set.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.db2-fetch-assoc-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 valid <em>stmt</em> resource containing a result set.
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</p>
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</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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Requests a specific 1-indexed row from the result set. Passing this
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parameter results in a PHP warning if the result set uses a
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forward-only cursor.
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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.db2-fetch-assoc-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 associative array with column values indexed by the column name
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representing the next or requested row in the result set. Returns <strong><code>FALSE</code></strong> if
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there are no rows left in the result set, or if the row requested by
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<code class="parameter">row_number</code> does not exist 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.db2-fetch-assoc-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-1255">
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<p><strong>Example #1 Iterating through a forward-only cursor</strong></p>
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<div class="example-contents"><p>
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If you call <span class="function"><strong>db2_fetch_assoc()</strong></span> without a specific row
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number, it automatically retrieves the next row in the result set.
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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 /><br />$sql </span><span style="color: #007700">= </span><span style="color: #DD0000">"SELECT id, name, breed, weight FROM animals ORDER BY breed"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$stmt </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_prepare</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 /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_execute</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">);<br /><br />while (</span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_fetch_assoc</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">)) {<br /> </span><span style="color: #0000BB">printf </span><span style="color: #007700">(</span><span style="color: #DD0000">"%-5d %-16s %-32s %10s\n"</span><span style="color: #007700">, <br /> </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'ID'</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'NAME'</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'BREED'</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'WEIGHT'</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 class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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0 Pook cat 3.20
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5 Rickety Ride goat 9.70
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2 Smarty horse 350.00
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</pre></div>
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</div>
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</div>
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<div class="example" id="example-1256">
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<p><strong>Example #2 Retrieving specific rows with <span class="function"><strong>db2_fetch_assoc()</strong></span>
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from a scrollable cursor</strong></p>
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<div class="example-contents"><p>
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If your result set uses a scrollable cursor, you can call
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<span class="function"><strong>db2_fetch_assoc()</strong></span> with a specific row number. The
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following example retrieves every other row in the result set, starting
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with the second row.
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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 /><br />$sql </span><span style="color: #007700">= </span><span style="color: #DD0000">"SELECT id, name, breed, weight FROM animals ORDER BY breed"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_exec</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">, </span><span style="color: #0000BB">$sql</span><span style="color: #007700">, array(</span><span style="color: #DD0000">'cursor' </span><span style="color: #007700">=> </span><span style="color: #0000BB">DB2_SCROLLABLE</span><span style="color: #007700">));<br /><br /></span><span style="color: #0000BB">$i</span><span style="color: #007700">=</span><span style="color: #0000BB">2</span><span style="color: #007700">;<br />while (</span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_fetch_assoc</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">"%-5d %-16s %-32s %10s\n"</span><span style="color: #007700">, <br /> </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'ID'</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'NAME'</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'BREED'</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'WEIGHT'</span><span style="color: #007700">]);<br /> </span><span style="color: #0000BB">$i </span><span style="color: #007700">= </span><span style="color: #0000BB">$i </span><span style="color: #007700">+ </span><span style="color: #0000BB">2</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 class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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0 Pook cat 3.20
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5 Rickety Ride goat 9.70
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2 Smarty horse 350.00
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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.db2-fetch-assoc-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="db2_fetch_array.html" class="function" rel="rdfs-seeAlso">db2_fetch_array()</a> - Returns an array, indexed by column position, representing a row in a result set</span></li>
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<li class="member"><span class="function"><a href="db2_fetch_both.html" class="function" rel="rdfs-seeAlso">db2_fetch_both()</a> - Returns an array, indexed by both column name and position, representing a row in a result set</span></li>
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<li class="member"><span class="function"><a href="db2_fetch_object.html" class="function" rel="rdfs-seeAlso">db2_fetch_object()</a> - Returns an object with properties representing columns in the fetched row</span></li>
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<li class="member"><span class="function"><a href="db2_fetch_row.html" class="function" rel="rdfs-seeAlso">db2_fetch_row()</a> - Sets the result set pointer to the next row or requested row</span></li>
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<li class="member"><span class="function"><a href="db2_result.html" class="function" rel="rdfs-seeAlso">db2_result()</a> - Returns a single column from a row in the result set</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> |