getattributes.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="reflectionfunctionabstract.getattributes" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>ReflectionFunctionAbstract::getAttributes</refname>
  <refpurpose>Gets Attributes</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis role="ReflectionFunctionAbstract">
   <modifier>public</modifier> <type>array</type><methodname>ReflectionFunctionAbstract::getAttributes</methodname>
   <methodparam choice="opt"><type class="union"><type>string</type><type>null</type></type><parameter>name</parameter><initializer>&null;</initializer></methodparam>
   <methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer>0</initializer></methodparam>
  </methodsynopsis>
  <para>
   Returns all attributes declared on this function or method as an array of <type>ReflectionAttribute</type>.
  </para>

 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <variablelist>
   &reflection.getattributes.param.name;
   &reflection.getattributes.param.flags;
  </variablelist>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Array of attributes, as a <classname>ReflectionAttribute</classname> object.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>Basic usage with a class method</title>
    <programlisting role="php">
<![CDATA[
<?php
#[Attribute]
class Fruit {
}

#[Attribute]
class Red {
}

class Factory {
    #[Fruit]
    #[Red]
    public function makeApple(): string
    {
        return 'apple';
    }
}

$method = new ReflectionMethod('Factory', 'makeApple');
$attributes = $method->getAttributes();
print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
Array
(
    [0] => Fruit
    [1] => Red
)
]]>
    </screen>
   </example>
  </para>
  <para>
   <example>
    <title>Basic usage with a function</title>
    <programlisting role="php">
<![CDATA[
<?php
#[Attribute]
class Fruit {
}

#[Attribute]
class Red {
}

#[Fruit]
#[Red]
function makeApple(): string
{
    return 'apple';
}

$function = new ReflectionFunction('makeApple');
$attributes = $function->getAttributes();
print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
Array
(
    [0] => Fruit
    [1] => Red
)
]]>
    </screen>
   </example>
  </para>
  <para>
   <example>
    <title>Filtering results by class name</title>
    <programlisting role="php">
<![CDATA[
<?php
#[Attribute]
class Fruit {
}

#[Attribute]
class Red {
}

#[Fruit]
#[Red]
function makeApple(): string
{
    return 'apple';
}

$function = new ReflectionFunction('makeApple');
$attributes = $function->getAttributes('Fruit');
print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
Array
(
    [0] => Fruit
)
]]>
    </screen>
   </example>
  </para>
  <para>
   <example>
    <title>Filtering results by class name, with inheritance</title>
    <programlisting role="php">
<![CDATA[
<?php
interface Color {
}

#[Attribute]
class Fruit {
}

#[Attribute]
class Red implements Color {
}

#[Fruit]
#[Red]
function makeApple(): string
{
    return 'apple';
}

$function = new ReflectionFunction('makeApple');
$attributes = $function->getAttributes('Color', ReflectionAttribute::IS_INSTANCEOF);
print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
Array
(
    [0] => Red
)
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><methodname>ReflectionClass::getAttributes</methodname></member>
    <member><methodname>ReflectionClassConstant::getAttributes</methodname></member>
    <member><methodname>ReflectionParameter::getAttributes</methodname></member>
    <member><methodname>ReflectionProperty::getAttributes</methodname></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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