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44 lines
2.4 KiB
HTML
44 lines
2.4 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>打开一个大型对象</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-lo-open" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">pg_lo_open</h1>
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<p class="verinfo">(PHP 4 >= 4.2.0, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">pg_lo_open</span> — <span class="dc-title">打开一个大型对象</span></p>
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</div>
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<div class="refsect1 unknown-seealsp" id="refsect1-function.pg-lo-open-unknown-seealsp">
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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_lo_open</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$connection</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$oid</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$mode</code></span>
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) : <span class="type">resource</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>pg_lo_open()</strong></span> 打开一个大型对象并返回大型对象资源号。该资源号内封装了连接号。<code class="parameter">oid</code> 指定了有效的大型对象的 oid，<code class="parameter">mode</code> 可以为 "r"，"w" 或者 "rw"。如果失败则返回 <strong><code>FALSE</code></strong>。
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</p>
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<div class="warning"><strong class="warning">Warning</strong>
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<p class="para">
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在关闭大型对象资源之前不要关闭数据库连接。
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</p>
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</div>
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<p class="para">
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要使用大型对象（lo）接口，需要将其放置在事务块中。
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</p>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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本函数以前的名字为 <em>pg_loopen()</em>。
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</p>
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</p></blockquote>
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<p class="para">
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参见 <span class="function"><a href="pg_lo_close.html" class="function">pg_lo_close()</a></span> 和 <span class="function"><a href="pg_lo_create.html" class="function">pg_lo_create()</a></span>。
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</p>
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</div>
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</div></div></div></body></html> |