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168 lines
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<!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>返回由类的默认属性组成的数组</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.get-class-vars" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">get_class_vars</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">get_class_vars</span> — <span class="dc-title">返回由类的默认属性组成的数组</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.get-class-vars-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>get_class_vars</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$class_name</code></span>
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) : <span class="type">array</span></div>
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<p class="para rdfs-comment">
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返回由类的默认公有属性组成的关联数组。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.get-class-vars-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">class_name</code></dt>
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<dd>
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<p class="para">
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类名
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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.get-class-vars-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns an associative array of declared properties visible from the
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current scope, with their default value.
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The resulting array elements are in the form of
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<em>varname => value</em>.
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In case of an error, it returns <strong><code>FALSE</code></strong>.
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.get-class-vars-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>5.0.3</td>
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<td>
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<span class="function"><strong>get_class_vars()</strong></span> will
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only return the properties that can be accessed from the current
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scope.
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</td>
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</tr>
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<tr>
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<td>5.0.2</td>
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<td>
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Calling <span class="function"><strong>get_class_vars()</strong></span> will now expose
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all the properties as an array, unlike previous behaviour where
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protected and private properties were prefixed with nul bytes.
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</td>
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</tr>
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<tr>
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<td>5.0.1</td>
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<td>
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Calling <span class="function"><strong>get_class_vars()</strong></span> will expose all
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properties, as when converting an object to a class.
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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 examples" id="refsect1-function.get-class-vars-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="function.usort.examples.basic">
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<p><strong>Example #1 <span class="function"><strong>get_class_vars()</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 /></span><span style="color: #007700">class </span><span style="color: #0000BB">myclass </span><span style="color: #007700">{<br /><br /> var </span><span style="color: #0000BB">$var1</span><span style="color: #007700">; </span><span style="color: #FF8000">// this has no default value...<br /> </span><span style="color: #007700">var </span><span style="color: #0000BB">$var2 </span><span style="color: #007700">= </span><span style="color: #DD0000">"xyz"</span><span style="color: #007700">;<br /> var </span><span style="color: #0000BB">$var3 </span><span style="color: #007700">= </span><span style="color: #0000BB">100</span><span style="color: #007700">;<br /> private </span><span style="color: #0000BB">$var4</span><span style="color: #007700">;<br /><br /> </span><span style="color: #FF8000">// constructor<br /> </span><span style="color: #007700">function </span><span style="color: #0000BB">__construct</span><span style="color: #007700">() {<br /> </span><span style="color: #FF8000">// change some properties<br /> </span><span style="color: #0000BB">$this</span><span style="color: #007700">-></span><span style="color: #0000BB">var1 </span><span style="color: #007700">= </span><span style="color: #DD0000">"foo"</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">$this</span><span style="color: #007700">-></span><span style="color: #0000BB">var2 </span><span style="color: #007700">= </span><span style="color: #DD0000">"bar"</span><span style="color: #007700">;<br /> return </span><span style="color: #0000BB">true</span><span style="color: #007700">;<br /> }<br /><br />}<br /><br /></span><span style="color: #0000BB">$my_class </span><span style="color: #007700">= new </span><span style="color: #0000BB">myclass</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$class_vars </span><span style="color: #007700">= </span><span style="color: #0000BB">get_class_vars</span><span style="color: #007700">(</span><span style="color: #0000BB">get_class</span><span style="color: #007700">(</span><span style="color: #0000BB">$my_class</span><span style="color: #007700">));<br /><br />foreach (</span><span style="color: #0000BB">$class_vars </span><span style="color: #007700">as </span><span style="color: #0000BB">$name </span><span style="color: #007700">=> </span><span style="color: #0000BB">$value</span><span style="color: #007700">) {<br /> echo </span><span style="color: #DD0000">"</span><span style="color: #0000BB">$name</span><span style="color: #DD0000"> : </span><span style="color: #0000BB">$value</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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var1 :
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var2 : xyz
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var3 : 100
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</pre></div>
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</div>
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</div>
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</p>
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<p class="para">
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<div class="example" id="function.usort.examples.multi">
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<p><strong>Example #2 <span class="function"><strong>get_class_vars()</strong></span> and scoping behaviour</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">function </span><span style="color: #0000BB">format</span><span style="color: #007700">(</span><span style="color: #0000BB">$array</span><span style="color: #007700">)<br />{<br /> return </span><span style="color: #0000BB">implode</span><span style="color: #007700">(</span><span style="color: #DD0000">'|'</span><span style="color: #007700">, </span><span style="color: #0000BB">array_keys</span><span style="color: #007700">(</span><span style="color: #0000BB">$array</span><span style="color: #007700">)) . </span><span style="color: #DD0000">"\r\n"</span><span style="color: #007700">;<br />}<br /><br />class </span><span style="color: #0000BB">TestCase<br /></span><span style="color: #007700">{<br /> public </span><span style="color: #0000BB">$a </span><span style="color: #007700">= </span><span style="color: #0000BB">1</span><span style="color: #007700">;<br /> protected </span><span style="color: #0000BB">$b </span><span style="color: #007700">= </span><span style="color: #0000BB">2</span><span style="color: #007700">;<br /> private </span><span style="color: #0000BB">$c </span><span style="color: #007700">= </span><span style="color: #0000BB">3</span><span style="color: #007700">;<br /><br /> public static function </span><span style="color: #0000BB">expose</span><span style="color: #007700">()<br /> {<br /> echo </span><span style="color: #0000BB">format</span><span style="color: #007700">(</span><span style="color: #0000BB">get_class_vars</span><span style="color: #007700">(</span><span style="color: #0000BB">__CLASS__</span><span style="color: #007700">));<br /> }<br />}<br /><br /></span><span style="color: #0000BB">TestCase</span><span style="color: #007700">::</span><span style="color: #0000BB">expose</span><span style="color: #007700">();<br />echo </span><span style="color: #0000BB">format</span><span style="color: #007700">(</span><span style="color: #0000BB">get_class_vars</span><span style="color: #007700">(</span><span style="color: #DD0000">'TestCase'</span><span style="color: #007700">));<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 class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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// 5.0.0
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a| * b| TestCase c
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a| * b| TestCase c
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// 5.0.1 - 5.0.2
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a|b|c
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a|b|c
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// 5.0.3 +
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a|b|c
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a
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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.get-class-vars-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="get_class_methods.html" class="function" rel="rdfs-seeAlso">get_class_methods()</a> - 返回由类的方法名组成的数组</span></li>
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<li class="member"><span class="function"><a href="get_object_vars.html" class="function" rel="rdfs-seeAlso">get_object_vars()</a> - 返回由对象属性组成的关联数组</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> |