php-doc-en/reference/reflection/reflectionmethod/invoke.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="reflectionmethod.invoke" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>ReflectionMethod::invoke</refname>
  <refpurpose>Invoke</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <modifier>public</modifier> <type>mixed</type><methodname>ReflectionMethod::invoke</methodname>
   <methodparam><type class="union"><type>object</type><type>null</type></type><parameter>object</parameter></methodparam>
   <methodparam rep="repeat"><type>mixed</type><parameter>args</parameter></methodparam>
  </methodsynopsis>
  <para>
   Invokes a reflected method.
  </para>

 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>object</parameter></term>
     <listitem>
      <para>
       The object to invoke the method on. For static methods, pass
       <type>null</type> to this parameter.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>args</parameter></term>
     <listitem>
      <para>
       Zero or more parameters to be passed to the method.
       It accepts a variable number of parameters which are passed to the method.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns the method result.
  </para>
 </refsect1>

 <refsect1 role="errors">
  &reftitle.errors;
  <para>
   A <classname>ReflectionException</classname> if the <parameter>object</parameter>
   parameter does not contain an instance of the class that this method was declared in.
  </para>
  <para>
   A <classname>ReflectionException</classname> if the method invocation failed.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><methodname>ReflectionMethod::invoke</methodname> example</title>
    <programlisting role="php">
<![CDATA[
<?php
class HelloWorld {

    public function sayHelloTo($name) {
        return 'Hello ' . $name;
    }

}

$reflectionMethod = new ReflectionMethod('HelloWorld', 'sayHelloTo');
echo $reflectionMethod->invoke(new HelloWorld(), 'Mike');
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
Hello Mike
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="notes">
  &reftitle.notes;
  <note>
   <para>
    <methodname>ReflectionMethod::invoke</methodname> cannot be used when reference parameters are expected.
    <methodname>ReflectionMethod::invokeArgs</methodname> has to be used instead (passing references in the argument list).
   </para>
  </note>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><methodname>ReflectionMethod::invokeArgs</methodname></member>
    <member><link linkend="object.invoke">__invoke()</link></member>
    <member><function>call_user_func</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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