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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Get the length (precision) of a field</title>
</head>
<body class="docs"><div id="layout">
<div id="layout-content"><div id="function.odbc-field-len" class="refentry">
<div class="refnamediv">
<h1 class="refname">odbc_field_len</h1>
<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">odbc_field_len</span> &mdash; <span class="dc-title">Get the length (precision) of a field</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.odbc-field-len-description">
<h3 class="title">说明</h3>
<div class="methodsynopsis dc-description">
<span class="methodname"><strong>odbc_field_len</strong></span>
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result_id</code></span>
, <span class="methodparam"><span class="type">int</span> <code class="parameter">$field_number</code></span>
) : <span class="type">int</span></div>
<p class="para rdfs-comment">
Gets the length of the field referenced by number in the given result
identifier.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.odbc-field-len-parameters">
<h3 class="title">参数</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">result_id</code></dt>
<dd>
<p class="para">
The result identifier.
</p>
</dd>
<dt>
<code class="parameter">field_number</code></dt>
<dd>
<p class="para">
The field number. Field numbering starts at 1.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.odbc-field-len-returnvalues">
<h3 class="title">返回值</h3>
<p class="para">
Returns the field length, or <strong><code>FALSE</code></strong> on error.
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.odbc-field-len-seealso">
<h3 class="title">参见</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="odbc_field_scale.html" class="function" rel="rdfs-seeAlso">odbc_field_scale()</a> - Get the scale of a field</span> to get the scale of a
floating point number</li>
</ul>
</p>
</div>
</div></div></div></body></html>