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116 lines
5.1 KiB
HTML
116 lines
5.1 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 number of fields 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-numfields" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">dbase_numfields</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_numfields</span> — <span class="dc-title">Gets the number of fields of a database</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.dbase-numfields-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_numfields</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$dbase_identifier</code></span>
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) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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Gets the number of fields (columns) in the specified database.
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</p>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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Field numbers are between 0 and <em>dbase_numfields($db)-1</em>,
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while record numbers are between 1 and <em>dbase_numrecords($db)</em>.
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</p>
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</p></blockquote>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.dbase-numfields-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-numfields-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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The number of fields in the database, or <strong><code>FALSE</code></strong> if an error occurs.
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.dbase-numfields-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-numfields-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-1189">
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<p><strong>Example #1 <span class="function"><strong>dbase_numfields()</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 /><br />$rec </span><span style="color: #007700">= </span><span style="color: #0000BB">dbase_get_record</span><span style="color: #007700">(</span><span style="color: #0000BB">$db</span><span style="color: #007700">, </span><span style="color: #0000BB">$recno</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$nf </span><span style="color: #007700">= </span><span style="color: #0000BB">dbase_numfields</span><span style="color: #007700">(</span><span style="color: #0000BB">$db</span><span style="color: #007700">);<br />for (</span><span style="color: #0000BB">$i </span><span style="color: #007700">= </span><span style="color: #0000BB">0</span><span style="color: #007700">; </span><span style="color: #0000BB">$i </span><span style="color: #007700">< </span><span style="color: #0000BB">$nf</span><span style="color: #007700">; </span><span style="color: #0000BB">$i</span><span style="color: #007700">++) {<br /> echo </span><span style="color: #0000BB">$rec</span><span style="color: #007700">[</span><span style="color: #0000BB">$i</span><span style="color: #007700">], </span><span style="color: #DD0000">"\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.dbase-numfields-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="dbase_numrecords.html" class="function" rel="rdfs-seeAlso">dbase_numrecords()</a> - Gets the number of records in a database</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> |