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40 lines
2.3 KiB
HTML
40 lines
2.3 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>返回指定字段占用内部存储空间的大小</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-field-size" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">pg_field_size</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_field_size</span> — <span class="dc-title">
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返回指定字段占用内部存储空间的大小
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</span></p>
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</div>
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<div class="refsect1 unknown-unknown-unknown-unknown-unknown-seealst" id="refsect1-function.pg-field-size-unknown-unknown-unknown-unknown-unknown-seealst">
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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_field_size</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$field_number</code></span>
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) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>pg_field_size()</strong></span> 返回 PostgreSQL <code class="parameter">result</code> 中指定字段占用内部存储空间的大小（字节数）。字段编号从 0 开始。字段大小为 -1 表示可变长度字段。如果出错本函数返回 <strong><code>FALSE</code></strong>。
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</p>
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<p class="para">
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参考 <span class="function"><a href="pg_field_name.html" class="function">pg_field_name()</a></span> 页面中的例子。
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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_fieldsize()</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_field_prtlen.html" class="function">pg_field_prtlen()</a></span> 和 <span class="function"><a href="pg_field_type.html" class="function">pg_field_type()</a></span>。
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</p>
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</div>
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</div></div></div></body></html> |