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188 lines
6.1 KiB
HTML
188 lines
6.1 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>Gets the header info of a database</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.dbase-get-header-info" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">dbase_get_header_info</h1>
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<p class="verinfo">(PHP 5 < 5.3.0, dbase 5, dbase 7)</p><p class="refpurpose"><span class="refname">dbase_get_header_info</span> — <span class="dc-title">Gets the header info of a database</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.dbase-get-header-info-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>dbase_get_header_info</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$dbase_identifier</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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Returns information on the column structure of the given database link
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identifier.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.dbase-get-header-info-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">dbase_identifier</code></dt>
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<dd>
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<p class="para">
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The database link identifier, returned by <span class="function"><a href="dbase_open.html" class="function">dbase_open()</a></span>
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or <span class="function"><a href="dbase_create.html" class="function">dbase_create()</a></span>.
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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.dbase-get-header-info-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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An indexed array with an entry for each column in the database. The array index
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starts at 0.
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</p>
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<p class="para">
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Each array element contains an associative array of column information, as
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described here:
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<dl>
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<dt>
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name</dt>
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<dd>
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<span class="simpara">
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The name of the column
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</span>
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</dd>
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<dt>
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type</dt>
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<dd>
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<span class="simpara">
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The human-readable name for the dbase type of the column (i.e. date,
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boolean, etc.)
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The supported field types are listed in the <a href="intro.dbase.html" class="link">introduction section</a>.
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</span>
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</dd>
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<dt>
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length</dt>
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<dd>
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<span class="simpara">
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The number of bytes this column can hold
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</span>
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</dd>
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<dt>
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precision</dt>
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<dd>
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<span class="simpara">
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The number of digits of decimal precision for the column
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</span>
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</dd>
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<dt>
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format</dt>
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<dd>
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<span class="simpara">
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A suggested <span class="function"><a href="printf.html" class="function">printf()</a></span> format specifier for the column
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</span>
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</dd>
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<dt>
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offset</dt>
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<dd>
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<span class="simpara">
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The byte offset of the column from the start of the row
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</span>
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</dd>
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</dl>
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</p>
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<p class="para">
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If the database header information cannot be read, <strong><code>FALSE</code></strong> is returned.
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.dbase-get-header-info-changelog">
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<h3 class="title">更新日志</h3>
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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>dbase 7.0.0</td>
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<td>
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<code class="parameter">dbase_identifier</code> is now a <span class="type"><a href="language.types.resource.html" class="type resource">resource</a></span>
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instead of an <span class="type"><a href="language.types.integer.html" class="type int">int</a></span>.
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="refsect1 examples" id="refsect1-function.dbase-get-header-info-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-1187">
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<p><strong>Example #1 Showing header information for a dBase database file</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 /></span><span style="color: #FF8000">// Path to dbase file<br /></span><span style="color: #0000BB">$db_path </span><span style="color: #007700">= </span><span style="color: #DD0000">"/tmp/test.dbf"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Open dbase file<br /></span><span style="color: #0000BB">$dbh </span><span style="color: #007700">= </span><span style="color: #0000BB">dbase_open</span><span style="color: #007700">(</span><span style="color: #0000BB">$db_path</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">)<br /> or die(</span><span style="color: #DD0000">"Error! Could not open dbase database file '</span><span style="color: #0000BB">$db_path</span><span style="color: #DD0000">'."</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Get column information<br /></span><span style="color: #0000BB">$column_info </span><span style="color: #007700">= </span><span style="color: #0000BB">dbase_get_header_info</span><span style="color: #007700">(</span><span style="color: #0000BB">$dbh</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Display information<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$column_info</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>
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</div>
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</div></div></div></body></html> |