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Add note about first-class callables to callable type and add link to the closure documentation page #4792

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Add note about first-class callables to callable type and add link to the closure documentation page #4792

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1d47386
Add note about first-class callables to callable type documentation page
shaedrich Jul 26, 2025
8bd4e90
Add link to Closure
shaedrich Jul 26, 2025
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9 changes: 5 additions & 4 deletions language/types/callable.xml
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Expand Up @@ -18,9 +18,10 @@
<title>Passing</title>

<para>
A PHP function is passed by its name as a <type>string</type>. Any built-in
or user-defined function can be used, except language constructs such as:
<function>array</function>, <function>echo</function>,
A PHP function is passed by either its name as a <type>string</type> or by
a <link linkend="functions.first_class_callable_syntax">first-class callable</link>.
Any built-in or user-defined function can be used, except language constructs
such as: <function>array</function>, <function>echo</function>,
<function>empty</function>, <function>eval</function>,
<function>exit</function>, <function>isset</function>,
<function>list</function>, <function>print</function> or
Expand Down Expand Up @@ -125,7 +126,7 @@ call_user_func($c, 'PHP!');
<para>
<example>
<title>
Callback example using a Closure
Callback example using a <link linkend="class.closure">Closure</link>
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btw, why do we have <type> and <function> but not <class>?

</title>
<programlisting role="php">
<![CDATA[
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