allowdynamicproperties.xml

<?xml version="1.0" encoding="utf-8"?>
<reference xml:id="class.allowdynamicproperties" role="class" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xi="http://www.w3.org/2001/XInclude">
 <title>The AllowDynamicProperties attribute</title>
 <titleabbrev>AllowDynamicProperties</titleabbrev>

 <partintro>

  <section xml:id="allowdynamicproperties.intro">
   &reftitle.intro;
   <para>
    This attribute is used to mark classes that allow
    <link linkend="language.oop5.properties.dynamic-properties">dynamic properties</link>.
   </para>
  </section>

  <section xml:id="allowdynamicproperties.synopsis">
   &reftitle.classsynopsis;

   <classsynopsis class="class">
    <ooclass>
     <modifier>final</modifier>
     <classname>AllowDynamicProperties</classname>
    </ooclass>

    <classsynopsisinfo role="comment">&Methods;</classsynopsisinfo>
    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.allowdynamicproperties')/db:refentry/db:refsect1[@role='description']/descendant::db:constructorsynopsis[@role='AllowDynamicProperties'])">
     <xi:fallback/>
    </xi:include>
   </classsynopsis>

  </section>

  <section>
   &reftitle.examples;
   <para>
    Dynamic properties are deprecated as of PHP 8.2.0,
    thus using them without marking the class with this attribute will emit
    a deprecation notice.
   </para>
   <informalexample>
    <programlisting role="php">
<![CDATA[
<?php
class DefaultBehaviour { }

#[\AllowDynamicProperties]
class ClassAllowsDynamicProperties { }

$o1 = new DefaultBehaviour();
$o2 = new ClassAllowsDynamicProperties();

$o1->nonExistingProp = true;
$o2->nonExistingProp = true;
?>
]]>
    </programlisting>
    &example.outputs.82;
    <screen>
<![CDATA[
Deprecated: Creation of dynamic property DefaultBehaviour::$nonExistingProp is deprecated in file on line 10
]]>
    </screen>
   </informalexample>
  </section>

  <section xml:id="allowdynamicproperties.seealso">
   &reftitle.seealso;
   <para><link linkend="language.attributes">Attributes overview</link></para>
  </section>

 </partintro>

 &language.predefined.allowdynamicproperties.construct;

</reference>
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