archived-doc-zh/reference/reflection/reflectionclass/getstaticpropertyvalue.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="reflectionclass.getstaticpropertyvalue" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>ReflectionClass::getStaticPropertyValue</refname>
  <refpurpose>获取静态（static）属性的值</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis role="ReflectionClass">
   <modifier>public</modifier> <type>mixed</type><methodname>ReflectionClass::getStaticPropertyValue</methodname>
   <methodparam><type>string</type><parameter>name</parameter></methodparam>
   <methodparam choice="opt"><type>mixed</type><parameter role="reference">def_value</parameter></methodparam>
  </methodsynopsis>
  <para>
   获取这个类里静态（static）属性的值。
  </para>

 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>name</parameter></term>
     <listitem>
      <para>
       静态属性的名称，来返回它的值。
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>def_value</parameter></term>
     <listitem>
      <para>
       假如类没有定义 <parameter>name</parameter> 的 static 属性，将返回一个默认值。
       如果属性不存在，并且省略了此参数，将会抛出
       <classname>ReflectionException</classname> 。
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   静态属性的值。
  </para>
 </refsect1>
 
 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><methodname>ReflectionClass::getStaticPropertyValue</methodname> 的基本用法</title>
    <programlisting role="php">
<![CDATA[
<?php
class Apple {
    public static $color = 'Red';
}

$class = new ReflectionClass('Apple');
var_dump($class->getStaticPropertyValue('color'));
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
string(3) "Red"
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><methodname>ReflectionClass::getStaticProperties</methodname></member>
    <member><methodname>ReflectionClass::setStaticPropertyValue</methodname></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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