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Merged
merged 4 commits into from
Jun 17, 2021
Merged

Fold in comments from is_callable() page #689

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a49cfea
Fold in comments from the site.
Crell Jun 14, 2021
bd10d96
Move to bulleted list.
Crell Jun 14, 2021
72abe4a
Syntax fix.
Crell Jun 14, 2021
215ec2d
Update reference/var/functions/is-callable.xml
cmb69 Jun 14, 2021
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19 changes: 18 additions & 1 deletion reference/var/functions/is-callable.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
<refnamediv>
<refname>is_callable</refname>
<refpurpose>
Verify that the contents of a variable can be called as a function
Verify that a value can be called as a function from the current scope.
</refpurpose>
</refnamediv>

Expand Down Expand Up @@ -151,6 +151,23 @@ bool(false)
</para>
</refsect1>

<refsect1 role="notes">
<simplelist>
<member>
An object is always callable if it implements <function>__invoke()</function>,
and that method is visible in the current scope.
</member>
<member>A class name is callable if it implements <function>__callStatic()</function></member>
<member>
If an object implements <function>__call()</function>, then this function will
return true for any method on that object, even if the method is not defined.
</member>
<member>
This function may trigger autoloading if called with the name of a class.
</member>
</simplelist>
</refsect1>

<refsect1 role="seealso">
&reftitle.seealso;
<para>
Expand Down