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Document fallback value syntax for ini variables (closes #4191) (#4192)

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Jim Winstead
2024-12-01 11:37:43 -08:00
committed by GitHub
parent 8c41f7f5cf
commit 9ab074d324
1 changed files with 13 additions and 10 deletions
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23
install/ini.xml
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@@ -88,20 +88,23 @@
PHP to attempt to read &php.ini; from the root filesystem if it exists.
</para>
</note>
<para>
Using environment variables can be used in &php.ini; as shown below.
</para>
<para>
<example>
<title>&php.ini; Environment Variables</title>
<programlisting role="ini">
<simpara>
Environment variables can be referenced within configuration values
in &php.ini; as shown below. As of PHP 8.3.0, a fallback value can
be specified that will be used when the referenced variable is not
defined.
</simpara>
<example>
<title>&php.ini; Environment Variables</title>
<programlisting role="ini">
<![CDATA[
; PHP_MEMORY_LIMIT is taken from environment
memory_limit = ${PHP_MEMORY_LIMIT}
; If PHP_MAX_EXECUTION_TIME is not defined, it will fall back to 30
max_execution_time = ${PHP_MAX_EXECUTION_TIME:-30}
]]>
</programlisting>
</example>
</para>
</programlisting>
</example>
<para>
The &php.ini; directives handled by extensions are documented
on the respective pages of the extensions themselves. A <link linkend="ini">list of