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Add changelog and warning about updated exit code behaviour since PHP 8.4.0 #5579

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jordikroon merged 2 commits into from
May 26, 2026
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Add changelog and warning about updated exit code behaviour since PHP 8.4.0 #5579

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Add changelog and warning about updated exit code bahaviour since PHP…
PrinsFrank May 24, 2026
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PrinsFrank May 25, 2026
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8 changes: 8 additions & 0 deletions reference/funchand/functions/register-shutdown-function.xml
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Expand Up @@ -24,6 +24,14 @@
function, processing will stop completely and no other registered
shutdown functions will be called.
</para>
<caution>
<simpara>
Since PHP 8.4.0, a parameterless <function>exit</function> call within a
registered shutdown function resets the exit code to <literal>0</literal>.
Calling <function>exit</function> with an explicit status overwrites the
previous exit code in all versions.
</simpara>
</caution>
<para>
Shutdown functions may also call <function>register_shutdown_function</function>
themselves to add a shutdown function to the end of the queue.
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10 changes: 10 additions & 0 deletions reference/misc/functions/exit.xml
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Expand Up @@ -109,6 +109,16 @@
<link linkend="functions.variable-functions">variable functions</link>.
</entry>
</row>
<row>
<entry>8.4.0</entry>
<entry>
A parameterless <function>exit</function> called within
<link linkend="function.register-shutdown-function">shutdown functions</link>
or <link linkend="language.oop5.decon.destructor">object destructors</link>
now resets the exit code to <literal>0</literal>; previously the exit code
set by an earlier <function>exit</function> call was kept.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
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