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

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="reflectionclass.newinstanceargs" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>ReflectionClass::newInstanceArgs</refname>
  <refpurpose>从给出的参数创建一个新的类实例</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis role="ReflectionClass">
   <modifier>public</modifier> <type class="union"><type>object</type><type>null</type></type><methodname>ReflectionClass::newInstanceArgs</methodname>
   <methodparam choice="opt"><type>array</type><parameter>args</parameter><initializer>[]</initializer></methodparam>
  </methodsynopsis>
  <para>
   创建一个类的新实例，给出的参数将传递到类的构造函数。
  </para>

 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>args</parameter></term>
     <listitem>
      <para>
       这个参数以 <type>array</type> 形式传递到类的构造函数。
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   返回类的新实例，失败时返回 &null;。
  </para>
 </refsect1>

 <refsect1 role="errors">
  &reftitle.errors;
  <para>
   如果类的构造函数不是 public 的将导致产生 <classname>ReflectionException</classname>。
  </para>
  <para>
   当 <parameter>args</parameter> 指定了一个或多个参数，而类不具有构造函数时,将导致 <classname>ReflectionException</classname>。
  </para>
 </refsect1>
 
 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><methodname>ReflectionClass::newInstanceArgs</methodname> 的基本用法</title>
    <programlisting role="php">
<![CDATA[
<?php
$class = new ReflectionClass('ReflectionFunction');
$instance = $class->newInstanceArgs(array('substr'));
var_dump($instance);
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
object(ReflectionFunction)#2 (1) {
  ["name"]=>
  string(6) "substr"
}
]]>
    </screen>
   </example>
  </para>
 </refsect1>

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

</refentry>
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