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84 lines
2.9 KiB
HTML
84 lines
2.9 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>Convert a variant into a new variant object of another type</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.variant-cast" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">variant_cast</h1>
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<p class="verinfo">(PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">variant_cast</span> — <span class="dc-title">Convert a variant into a new variant object of another type</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.variant-cast-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>variant_cast</strong></span>
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( <span class="methodparam"><span class="type"><a href="class.variant.html" class="type variant">variant</a></span> <code class="parameter">$variant</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$type</code></span>
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) : <span class="type"><a href="class.variant.html" class="type variant">variant</a></span></div>
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<p class="para rdfs-comment">
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This function makes a copy of <code class="parameter">variant</code> and then
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performs a variant cast operation to force the copy to have the type
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given by <code class="parameter">type</code>.
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</p>
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<p class="para">
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This function wraps VariantChangeType() in the COM library; consult MSDN
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for more information.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.variant-cast-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">variant</code></dt>
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<dd>
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<p class="para">
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The variant.
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</p>
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</dd>
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<dt>
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<code class="parameter">type</code></dt>
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<dd>
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<p class="para">
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<code class="parameter">type</code> should be one of the
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<strong><code>VT_XXX</code></strong> constants.
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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.variant-cast-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns a variant of given <code class="parameter">type</code>.
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.variant-cast-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="variant_set_type.html" class="function" rel="rdfs-seeAlso">variant_set_type()</a> - Convert a variant into another type "in-place"</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> |