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<?xml version="1.0" encoding="utf-8"?>
<sect1 xml:id="language.types.mixed">
<title>Mixed</title>
<para>
The <type>mixed</type> type accepts every value. It is equivalent to the
<link linkend="language.types.type-system.composite.union">union type</link>
<!-- Need to improve rendering of free-standing type elements in PhD
<type class="union">
<type>object</type><type>resource</type><type>array</type><type>string</type>
<type>int</type><type>float</type><type>bool</type><type>null</type>
</type>.
-->
<literal>object|resource|array|string|float|int|bool|null</literal>.
Available as of PHP 8.0.0.
</para>
<para>
<type>mixed</type> is, in type theory parlance, the top type.
Meaning every other type is a subtype of it.
</para>
</sect1>
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