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void: document that returning a value is a compile-time error #5920

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Merged
lacatoire merged 2 commits into from
Oct 8, 2026
Merged

void: document that returning a value is a compile-time error #5920

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fbc0d61
void: returning a value is a compile-time error
SatvikMishra08 Oct 8, 2026
3cf5d28
Clarify implicit null return value in void docs
SatvikMishra08 Oct 8, 2026
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9 changes: 9 additions & 0 deletions language/types/void.xml
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Expand Up @@ -9,6 +9,15 @@
<link linkend="language.types.type-system.composite.union">union type</link>
declaration. Available as of PHP 7.1.0.
</para>
<simpara>
A <literal>return</literal> statement with an expression in a
<type>void</type> function is a compile-time error, even if the
<literal>return</literal> would not be reached during execution.
This includes <literal>return null;</literal>; use a bare
<literal>return;</literal> to exit the function early. The
<literal>null</literal> mentioned below is only the implicit value of
the call.
</simpara>

<note>
<simpara>
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