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158 lines
6.3 KiB
HTML
158 lines
6.3 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>返回 PostgreSQL 服务器最新一条公告信息</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-last-notice" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">pg_last_notice</h1>
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<p class="verinfo">(PHP 4 >= 4.0.6, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">pg_last_notice</span> — <span class="dc-title">
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返回 PostgreSQL 服务器最新一条公告信息
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</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.pg-last-notice-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_last_notice</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$connection</code></span>
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) : <span class="type">string</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>pg_last_notice()</strong></span>
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返回由 <code class="parameter">connection</code>
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指定的 PostgreSQL 服务器最新的一条公告信息。PostgreSQL
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服务器在某些情况下会发送公告信息，例如在表里创建 <em>SERIAL</em> 列。
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</p>
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<p class="para">
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有了
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<span class="function"><strong>pg_last_notice()</strong></span>，只要检查公告是否和该事务有关，就可以避免提交无用的查询。
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</p>
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<p class="para">
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可以通过在 <var class="filename">php.ini</var> 中把
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<em>pgsql.ignore_notice</em> 置为 1 来使公告信息追踪成为可选项。
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</p>
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<p class="para">
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可以通过在 <var class="filename">php.ini</var> 中把
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<em>pgsql.log_notice</em> 置为 0 来使公告信息日志成为可选项。
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除非 <em>pgsql.ignore_notice</em> 为 0，否则公告信息不能被日志记录。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.pg-last-notice-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">connection</code></dt>
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<dd>
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<p class="para">
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PostgreSQL database connection resource.
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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-last-notice-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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A <span class="type"><a href="language.types.string.html" class="type string">string</a></span> containing the last notice on the
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given <code class="parameter">connection</code>, or <strong><code>FALSE</code></strong> on error.
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.pg-last-notice-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>4.3.0</td>
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<td>
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本函数在 PHP 4.3.0 中完全实现。低于 PHP 4.3.0 的版本中都忽略了数据库连接参数。
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</td>
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</tr>
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<tr>
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<td>4.3.0</td>
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<td>
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The <em>pgsql.ignore_notice</em> and
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<em>pgsql.log_notice</em> <var class="filename">php.ini</var> directives were added.
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</td>
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</tr>
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<tr>
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<td>4.0.6</td>
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<td>
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PHP 4.0.6
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本身在公告信息处理上有问题。即使不使用
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<span class="function"><strong>pg_last_notice()</strong></span> 函数，也不推荐在 PHP 4.0.6
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中使用 PostgreSQL 模块。
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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-last-notice-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-2501">
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<p><strong>Example #1 <span class="function"><strong>pg_last_notice()</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 /> $pgsql_conn </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"dbname=mark host=localhost"</span><span style="color: #007700">);<br /> <br /> </span><span style="color: #0000BB">$res </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE TABLE test (id SERIAL)"</span><span style="color: #007700">);<br /> <br /> </span><span style="color: #0000BB">$notice </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_last_notice</span><span style="color: #007700">(</span><span style="color: #0000BB">$pgsql_conn</span><span style="color: #007700">);<br /> <br /> echo </span><span style="color: #0000BB">$notice</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 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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CREATE TABLE will create implicit sequence "test_id_seq" for "serial" column "test.id"
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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-last-notice-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_last_error.html" class="function" rel="rdfs-seeAlso">pg_last_error()</a> - 得到某连接的最后一条错误信息</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> |