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128 lines
3.7 KiB
HTML
128 lines
3.7 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>Get the value of a field</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.fdf-get-value" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">fdf_get_value</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">fdf_get_value</span> — <span class="dc-title">Get the value of a field</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.fdf-get-value-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>fdf_get_value</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$fdf_document</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$fieldname</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$which</code><span class="initializer"> = -1</span></span>
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] ) : <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span></div>
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<p class="para rdfs-comment">
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Gets the value for the requested field.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.fdf-get-value-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">fdf_document</code></dt>
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<dd>
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<p class="para">
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The FDF document handle, returned by <span class="function"><a href="fdf_create.html" class="function">fdf_create()</a></span>,
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<span class="function"><a href="fdf_open.html" class="function">fdf_open()</a></span> or <span class="function"><a href="fdf_open_string.html" class="function">fdf_open_string()</a></span>.
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</p>
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</dd>
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<dt>
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<code class="parameter">fieldname</code></dt>
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<dd>
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<p class="para">
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Name of the FDF field, as a string.
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</p>
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</dd>
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<dt>
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<code class="parameter">which</code></dt>
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<dd>
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<p class="para">
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Elements of an array field can be retrieved by passing this optional
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parameter, starting at zero. For non-array fields, this parameter will
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be ignored.
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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.fdf-get-value-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns the field value.
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.fdf-get-value-changelog">
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<h3 class="title">更新日志</h3>
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<p class="para">
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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>4.3.0</td>
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<td>
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Support for arrays and the <code class="parameter">which</code> parameter
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were added.
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</td>
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</tr>
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</tbody>
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</table>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.fdf-get-value-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="fdf_set_value.html" class="function" rel="rdfs-seeAlso">fdf_set_value()</a> - Set the value of a field</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> |