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140 lines
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HTML
140 lines
7.1 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>提取一行作为枚举数组</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.pg-fetch-row" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">pg_fetch_row</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">pg_fetch_row</span> — <span class="dc-title">提取一行作为枚举数组</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.pg-fetch-row-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>pg_fetch_row</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</code></span>
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] ) : <span class="type">array</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>pg_fetch_row()</strong></span> 根据指定的 <code class="parameter">result</code> 资源提取一行数据（记录）作为数组返回。每个得到的列依次存放在数组中，从偏移量 0 开始。
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</p>
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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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</div>
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<div class="refsect1 parameters" id="refsect1-function.pg-fetch-row-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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PostgreSQL query result resource, returned by <span class="function"><a href="pg_query.html" class="function">pg_query()</a></span>,
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<span class="function"><a href="pg_query_params.html" class="function">pg_query_params()</a></span> or <span class="function"><a href="pg_execute.html" class="function">pg_execute()</a></span>
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(among others).
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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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Row number in result to fetch. Rows are numbered from 0 upwards. If
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omitted or <strong><code>NULL</code></strong>, the next row is fetched.
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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.pg-fetch-row-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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An <span class="type"><a href="language.types.array.html" class="type array">array</a></span>, indexed from 0 upwards, with each value
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represented as a <span class="type"><a href="language.types.string.html" class="type string">string</a></span>. Database <em>NULL</em>
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values are returned as <strong><code>NULL</code></strong>.
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</p>
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<p class="para">
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返回的数组和提取的行相一致。如果没有更多行 <code class="parameter">row</code> 可提取，则返回 <strong><code>FALSE</code></strong>。
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.pg-fetch-row-changelog">
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<h3 class="title">更新日志</h3>
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<p class="para">
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<table class="doctable informaltable">
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<thead>
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<tr>
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<th>版本</th>
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<th>说明</th>
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</tr>
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</thead>
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<tbody class="tbody">
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<tr>
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<td>4.1.0</td>
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<td>
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参数 <code class="parameter">row</code> 成为可选参数。
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</td>
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</tr>
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</tbody>
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</table>
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.pg-fetch-row-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-2492">
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<p><strong>Example #1 <span class="function"><strong>pg_fetch_row()</strong></span> 例子</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 />$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_pconnect</span><span style="color: #007700">(</span><span style="color: #DD0000">"dbname=publisher"</span><span style="color: #007700">);<br />if (!</span><span style="color: #0000BB">$conn</span><span style="color: #007700">) {<br /> echo </span><span style="color: #DD0000">"An error occured.\n"</span><span style="color: #007700">;<br /> exit;<br />}<br /><br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #DD0000">"SELECT author, email FROM authors"</span><span style="color: #007700">);<br />if (!</span><span style="color: #0000BB">$result</span><span style="color: #007700">) {<br /> echo </span><span style="color: #DD0000">"An error occured.\n"</span><span style="color: #007700">;<br /> exit;<br />}<br /><br />while (</span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_fetch_row</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">)) {<br /> echo </span><span style="color: #DD0000">"Author: </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]</span><span style="color: #DD0000"> E-mail: </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">]</span><span style="color: #DD0000">"</span><span style="color: #007700">;<br /> echo </span><span style="color: #DD0000">"<br />\n"</span><span style="color: #007700">;<br />}<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.pg-fetch-row-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="pg_query.html" class="function" rel="rdfs-seeAlso">pg_query()</a> - 执行查询</span></li>
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<li class="member"><span class="function"><a href="pg_fetch_array.html" class="function" rel="rdfs-seeAlso">pg_fetch_array()</a> - 提取一行作为数组</span></li>
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<li class="member"><span class="function"><a href="pg_fetch_object.html" class="function" rel="rdfs-seeAlso">pg_fetch_object()</a> - 提取一行作为对象</span></li>
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<li class="member"><span class="function"><a href="pg_fetch_result.html" class="function" rel="rdfs-seeAlso">pg_fetch_result()</a> - 从结果资源中返回值</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> |