📄 function.dbase-numfields.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Gets the number of fields of a database</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.dbase-get-record.html">dbase_get_record</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.dbase-numrecords.html">dbase_numrecords</a></div> <div class="up"><a href="ref.dbase.html">dBase Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.dbase-numfields" class="refentry"> <div class="refnamediv"> <h1 class="refname">dbase_numfields</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">dbase_numfields</span> — <span class="dc-title">Gets the number of fields of a database</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><b><b>dbase_numfields</b></b></span> ( <span class="methodparam"><span class="type">int</span> <tt class="parameter">$dbase_identifier</tt></span> )</div> <p class="para rdfs-comment"> Gets the number of fields (columns) in the specified database. </p> <blockquote><p><b class="note">Note</b>: Field numbers are between 0 and dbase_numfields($db)-1, while record numbers are between 1 and dbase_numrecords($db). <br /> </p></blockquote> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">dbase_identifier</tt></i></span> <dd> <p class="para"> The database link identifier, returned by <a href="function.dbase-open.html" class="function">dbase_open()</a> or <a href="function.dbase-create.html" class="function">dbase_create()</a>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> The number of fields in the database, or <b><tt>FALSE</tt></b> if an error occurs. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>dbase_numfields()</b> Example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /><br />$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></span></code></div> </div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.dbase-numrecords.html" class="function" rel="rdfs-seeAlso">dbase_numrecords()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.dbase-get-record.html">dbase_get_record</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.dbase-numrecords.html">dbase_numrecords</a></div> <div class="up"><a href="ref.dbase.html">dBase Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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