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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>Fetch a result row as an associative, a numeric array, or both</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.maxdb-fetch-array" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">maxdb_fetch_array</h1>
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<h1 class="refname">maxdb_result::fetch_array</h1>
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<p class="verinfo">(PECL maxdb >= 1.0)</p><p class="refpurpose"><span class="refname">maxdb_fetch_array</span> -- <span class="refname">maxdb_result::fetch_array</span> — <span class="dc-title">Fetch a result row as an associative, a numeric array, or both</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.maxdb-fetch-array-description">
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<h3 class="title">说明</h3>
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<p class="para">过程化风格</p>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>maxdb_fetch_array</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$resulttype</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">面向对象风格</p>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>maxdb_result::fetch_array</strong></span>
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([ <span class="methodparam"><span class="type">int</span> <code class="parameter">$resulttype</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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Returns an array that corresponds to the fetched row or <strong><code>NULL</code></strong> if there are no more rows for the
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resultset represented by the <code class="parameter">result</code> parameter.
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</p>
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<p class="para">
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<span class="function"><strong>maxdb_fetch_array()</strong></span> is an extended version of the
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<span class="function"><a href="maxdb_fetch_row.html" class="function">maxdb_fetch_row()</a></span> function. In addition to storing the data in the
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numeric indices of the result array, the <span class="function"><strong>maxdb_fetch_array()</strong></span> function can
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also store the data in associative indices, using the field names of the result set as keys.
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</p>
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<blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">此函数返回的字段名<em class="emphasis">大小写敏感</em>。</span></p></blockquote>
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<blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">此函数将 NULL 字段设置为 PHP <strong><code>NULL</code></strong> 值。</span></p></blockquote>
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<p class="para">
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If two or more columns of the result have the same field names, the last column will take
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precedence and overwrite the earlier data. In order to access multiple columns with the same
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name, the numerically indexed version of the row must be used.
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</p>
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<p class="para">
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The optional second argument <code class="parameter">resulttype</code> is a constant indicating what
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type of array should be produced from the current row data. The possible values for this parameter
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are the constants MAXDB_ASSOC, MAXDB_ASSOC_UPPER, MAXDB_ASSOC_LOWER, MAXDB_NUM, or MAXDB_BOTH.
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By default the
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<span class="function"><strong>maxdb_fetch_array()</strong></span> function will assume MAXDB_BOTH, which is a combination of
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MAXDB_NUM and MAXDB_ASSOC for this parameter.
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</p>
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<p class="para">
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By using the MAXDB_ASSOC constant this function will behave identically to the
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<span class="function"><a href="maxdb_fetch_assoc.html" class="function">maxdb_fetch_assoc()</a></span>, while MAXDB_NUM will behave identically to the
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<span class="function"><a href="maxdb_fetch_row.html" class="function">maxdb_fetch_row()</a></span> function. The final option MAXDB_BOTH will create a single
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array with the attributes of both.
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</p>
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<p class="para">
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By using the MAXDB_ASSOC_UPPER constant, the behaviour of this function is identical to the use
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of MAXDB_ASSOC except the array index of a column is the fieldname in upper case.
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</p>
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<p class="para">
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By using the MAXDB_ASSOC_LOWER constant, the behaviour of this function is identical to the use
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of MAXDB_ASSOC except the array index of a column is the fieldname in lower case.
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.maxdb-fetch-array-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 array that corresponds to the fetched row or <strong><code>NULL</code></strong> if there are no more rows in resultset.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.maxdb-fetch-array-examples">
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<h3 class="title">范例</h3>
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<div class="example" id="example-1343">
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<p><strong>Example #1 面向对象风格</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 />$maxdb </span><span style="color: #007700">= new </span><span style="color: #0000BB">maxdb</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"MONA"</span><span style="color: #007700">, </span><span style="color: #DD0000">"RED"</span><span style="color: #007700">, </span><span style="color: #DD0000">"DEMODB"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* check connection */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">maxdb_connect_errno</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">maxdb_connect_error</span><span style="color: #007700">());<br /> exit();<br />}<br /><br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">"SELECT name, state FROM hotel.city ORDER by zip"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* numeric array */<br /></span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">$result</span><span style="color: #007700">-></span><span style="color: #0000BB">fetch_array</span><span style="color: #007700">(</span><span style="color: #0000BB">MAXDB_NUM</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">printf </span><span style="color: #007700">(</span><span style="color: #DD0000">"%s (%s)\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">]);<br /><br /></span><span style="color: #FF8000">/* associative array */<br /></span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">$result</span><span style="color: #007700">-></span><span style="color: #0000BB">fetch_array</span><span style="color: #007700">(</span><span style="color: #0000BB">MAXDB_ASSOC</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">printf </span><span style="color: #007700">(</span><span style="color: #DD0000">"%s (%s)\n"</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">"STATE"</span><span style="color: #007700">]);<br /><br /></span><span style="color: #FF8000">/* associative and numeric array */<br /></span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">$result</span><span style="color: #007700">-></span><span style="color: #0000BB">fetch_array</span><span style="color: #007700">(</span><span style="color: #0000BB">MAXDB_BOTH</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">printf </span><span style="color: #007700">(</span><span style="color: #DD0000">"%s (%s)\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">"STATE"</span><span style="color: #007700">]);<br /><br /></span><span style="color: #FF8000">/* free result set */<br /></span><span style="color: #0000BB">$result</span><span style="color: #007700">-></span><span style="color: #0000BB">close</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-></span><span style="color: #0000BB">close</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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<div class="example" id="example-1344">
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<p><strong>Example #2 过程化风格</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 />$link </span><span style="color: #007700">= </span><span style="color: #0000BB">maxdb_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"MONA"</span><span style="color: #007700">, </span><span style="color: #DD0000">"RED"</span><span style="color: #007700">, </span><span style="color: #DD0000">"DEMODB"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* check connection */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">maxdb_connect_errno</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">maxdb_connect_error</span><span style="color: #007700">());<br /> exit();<br />}<br /><br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">"SELECT name, state FROM hotel.city ORDER by zip"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">maxdb_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* numeric array */<br /></span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">maxdb_fetch_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">, </span><span style="color: #0000BB">MAXDB_NUM</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">printf </span><span style="color: #007700">(</span><span style="color: #DD0000">"%s (%s)\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">]);<br /><br /></span><span style="color: #FF8000">/* associative array */<br /></span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">maxdb_fetch_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">, </span><span style="color: #0000BB">MAXDB_ASSOC</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">printf </span><span style="color: #007700">(</span><span style="color: #DD0000">"%s (%s)\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">"NAME"</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">"STATE"</span><span style="color: #007700">]);<br /><br /></span><span style="color: #FF8000">/* associative and numeric array */<br /></span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">maxdb_fetch_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">, </span><span style="color: #0000BB">MAXDB_BOTH</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">printf </span><span style="color: #007700">(</span><span style="color: #DD0000">"%s (%s)\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">"STATE"</span><span style="color: #007700">]);<br /><br /></span><span style="color: #FF8000">/* free result set */<br /></span><span style="color: #0000BB">maxdb_free_result</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">maxdb_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</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 class="para">以上例程的输出类似于：</p>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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New York (NY)
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New York (NY)
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Long Island (NY)
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</pre></div>
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</div>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.maxdb-fetch-array-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="maxdb_fetch_assoc.html" class="function" rel="rdfs-seeAlso">maxdb_fetch_assoc()</a> - Fetch a result row as an associative array</span></li>
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<li class="member"><span class="function"><a href="maxdb_fetch_row.html" class="function" rel="rdfs-seeAlso">maxdb_fetch_row()</a> - Get a result row as an enumerated array</span></li>
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<li class="member"><span class="function"><strong>maxdb_fetch_resource()</strong></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> |