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<refentry xml:id="reflectionclass.getreflectionconstants" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>ReflectionClass::getReflectionConstants</refname>
  <refpurpose>Gets class constants</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis role="ReflectionClass">
   <modifier>public</modifier> <type>array</type><methodname>ReflectionClass::getReflectionConstants</methodname>
   <methodparam choice="opt"><type class="union"><type>int</type><type>null</type></type><parameter>filter</parameter><initializer>&null;</initializer></methodparam>
  </methodsynopsis>
  <para>
   Retrieves reflected constants.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <variablelist>
   <varlistentry>
    <term><parameter>filter</parameter></term>
    <listitem>
     <para>
      The optional filter, for filtering desired constant visibilities. It's configured using
      the <link linkend="reflectionclassconstant.constants.modifiers">ReflectionClassConstant constants</link>,
      and defaults to all constant visibilities.
     </para>
    </listitem>
   </varlistentry>
  </variablelist>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   An array of <classname>ReflectionClassConstant</classname> objects.
  </para>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <informaltable>
   <tgroup cols="2">
    <thead>
     <row>
      <entry>&Version;</entry>
      <entry>&Description;</entry>
     </row>
    </thead>
    <tbody>
     <row>
      <entry>8.0.0</entry>
      <entry>
       <parameter>filter</parameter> has been added.
      </entry>
     </row>
    </tbody>
   </tgroup>
  </informaltable>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <example xml:id="reflectionclass.getreflectionconstants.example">
   <title>Basic <function>ReflectionClass::getReflectionConstants</function> example</title>
   <programlisting role="php">
<![CDATA[
<?php
class Foo {
    public    const FOO  = 1;
    protected const BAR  = 2;
    private   const BAZ  = 3;
}

$foo = new Foo();

$reflect = new ReflectionClass($foo);
$consts  = $reflect->getReflectionConstants();

foreach ($consts as $const) {
    print $const->getName() . "\n";
}

var_dump($consts);

?>
]]>
   </programlisting>
   &example.outputs.similar;
   <screen>
<![CDATA[
FOO
BAR
BAZ
array(3) {
  [0]=>
  object(ReflectionClassConstant)#3 (2) {
    ["name"]=>
    string(3) "FOO"
    ["class"]=>
    string(3) "Foo"
  }
  [1]=>
  object(ReflectionClassConstant)#4 (2) {
    ["name"]=>
    string(3) "BAR"
    ["class"]=>
    string(3) "Foo"
  }
  [2]=>
  object(ReflectionClassConstant)#5 (2) {
    ["name"]=>
    string(3) "BAZ"
    ["class"]=>
    string(3) "Foo"
  }
}
]]>
   </screen>
  </example>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><methodname>ReflectionClass::getReflectionConstant</methodname></member>
    <member><classname>ReflectionClassConstant</classname></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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