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✨ New WordPress.WP.OptionAutoload sniff
This sniff warns users about missing `$autoload` parameter when calling relevant WordPress option functions. The sniff runs when the following functions are found in the code: - add_option( $option, $value = '', $deprecated = '', $autoload = null) - update_option( $option, $value, $autoload = null ) - wp_set_options_autoload( $options, $autoload ) - wp_set_option_autoload( $option, $autoload ) - wp_set_option_autoload_values( $options ) For `add_option()` and `update_option()`, if the `$autoload` parameter is not passed, it simply recommends passing it. For the other three functions, the `$autoload` parameter (or `$options` parameter in the case of `wp_set_option_autoload_values()`) is mandatory, so it is not needed to check if the parameter is omitted. If the `$autoload` parameter is passed and is `true|false|null` for `add_option()` and `update_option()` or `true|false` for `wp_set_options_autoload()`, `wp_set_option_autoload()` and `wp_set_option_autoload_values()`, the sniff stays silent as those are valid values. If the `$autoload` parameter is passed and is `'yes'|'no'`, the sniff flags as discouraged parameter values and auto-fixes to `true|false`. For the internal-use only values of the `$autoload` parameter, if the value is `'auto'|'auto-on'|'auto-off'` the sniff flags it as unsupported without auto-fixing. If the value is `'on'|'off'`, the sniff flags it as unsupported and auto-fixes to `true|false`. Any other value passed is flagged as an unsupported value and a list of supported values is provided. The sniff ignores the function call when it is not able to determine the value of the `$autoload` parameter. For example, when a variable or a constant is passed.
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‎WordPress-Extra/ruleset.xml‎

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https://github.com/WordPress/WordPress-Coding-Standards/issues/2459 -->
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<rule ref="WordPress.WP.GetMetaSingle"/>
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<!-- Flags calls to add_option(), update_option(), wp_set_options_autoload(),
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wp_set_option_autoload(), wp_set_option_autoload_values() functions when the
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`$autoload` parameter is missing or contain an invalid, internal-only or
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deprecated value.
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https://github.com/WordPress/WordPress-Coding-Standards/issues/2473 -->
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<rule ref="WordPress.WP.OptionAutoload"/>
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<!--
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#############################################################################
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Code style sniffs for more recent PHP features and syntaxes.

‎WordPress/Docs/WP/OptionAutoloadStandard.xml‎

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<?xml version="1.0"?>
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<documentation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:noNamespaceSchemaLocation="https://phpcsstandards.github.io/PHPCSDevTools/phpcsdocs.xsd"
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title="Option Autoload"
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>
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<standard>
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<![CDATA[
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When using `add_option()`, `update_option()`, `wp_set_options_autoload()`,
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`wp_set_option_autoload()`, or `wp_set_option_autoload_values()`, it is recommended to
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explicitly set the autoload value to ensure predictable behavior. This value determines whether
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the option is automatically loaded on every page load, which can impact site performance.
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Check https://felix-arntz.me/blog/autoloading-wordpress-options-efficiently-and-responsibly/ for
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more information on when to set autoload to `true` or `false`.
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]]>
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</standard>
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<standard>
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<![CDATA[
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Even though the autoload parameter is optional for `add_option()` and `update_option()`, it is
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recommended to always explicitly set it.
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]]>
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</standard>
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<code_comparison>
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<code title="Valid: Explicitly setting the autoload parameter.">
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<![CDATA[
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add_option(
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'my_option',
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'value',
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'',
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<em>true</em>
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);
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]]>
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</code>
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<code title="Invalid: Autoload parameter missing.">
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<![CDATA[
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add_option(
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'my_option',
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'value',
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''
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);
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]]>
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</code>
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</code_comparison>
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<standard>
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<![CDATA[
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Using 'yes' or 'no' is not recommended. Those values are deprecated. Instead, use
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`true`|`false`|`null` if using `add_option()` or `update_option()` or `true`|`false` if using
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`wp_set_option_autoload_values()`, `wp_set_option_autoload()`, or `wp_set_options_autoload()`.
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]]>
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</standard>
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<code_comparison>
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<code title="Valid: Using boolean values.">
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<![CDATA[
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update_option(
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'my_option',
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'value',
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<em>true</em>
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);
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]]>
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</code>
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<code title="Invalid: Using deprecated values.">
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<![CDATA[
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update_option(
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'my_option',
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'value',
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<em>'yes'</em>
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);
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]]>
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</code>
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</code_comparison>
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<standard>
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<![CDATA[
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It is not recommended to use internal-only values ('auto', 'auto-on', 'auto-off', 'on', 'off')
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in plugin or theme code. Instead, use `true`|`false`|`null` if using `add_option()` or
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`update_option()` or `true`|`false` if using `wp_set_option_autoload_values()`,
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`wp_set_option_autoload()`, or `wp_set_options_autoload()`.
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]]>
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</standard>
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<code_comparison>
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<code title="Valid: Using boolean values.">
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<![CDATA[
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wp_set_option_autoload_values(
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array(
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'my_option_1' => <em>true</em>,
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'my_option_2' => <em>false</em>
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)
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);
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]]>
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</code>
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<code title="Invalid: Using internal-only values.">
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<![CDATA[
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wp_set_option_autoload_values(
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array(
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'my_option_1' => <em>'auto-on'</em>,
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'my_option_2' => <em>'auto-off'</em>
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)
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);
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]]>
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</code>
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</code_comparison>
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<standard>
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<![CDATA[
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Only `true` and `false` are valid values for the autoload parameter, with one exception: `null`
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is also valid for `add_option()` and `update_option()`.
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]]>
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</standard>
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<code_comparison>
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<code title="Valid: Using `true`, `false`, or `null`.">
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<![CDATA[
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wp_set_options_autoload(
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array( 'my_option_1', 'my_option_2' ),
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<em>false</em>
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);
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wp_set_option_autoload(
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'my_option',
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<em>false</em>
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);
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]]>
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</code>
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<code title="Invalid: Using invalid values.">
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<![CDATA[
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wp_set_options_autoload(
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array( 'my_option_1', 'my_option_2' ),
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<em>1</em>
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);
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wp_set_option_autoload(
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'my_option',
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<em>null</em> // `null` is invalid for this function.
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);
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]]>
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</code>
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</code_comparison>
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</documentation>

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