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Co-authored-by: Juliette <[email protected]>

WordPress/Docs/WP/GetMetaFunctionSingleParameterStandard.xml

@@ -7,12 +7,11 @@
     <![CDATA[
     When calling the `get_(comment|post|site|term|user)_meta()`, `get_metadata()`,
     `get_metadata_default()`, and `get_metadata_raw()` functions, if the `$[meta_]key` parameter is
-    passed, the `$single` parameter should be passed as well to make it explicit what is the
-    expected return type.
+    passed, the `$single` parameter should be passed as well to make it explicit whether the functions should return a single value (the first value) or an array of values stored for the meta key.
     ]]>
     </standard>
     <code_comparison>
-        <code title="Valid: Get meta functions called either without the `$[meta_]key` parameter or with both the `$[meta_]key` and the `$single` parameters.">
+        <code title="Valid: Get meta functions called either without the `$[meta_]key` parameter; or with both the `$[meta_]key` and the `$single` parameters.">
         <![CDATA[
 $admin_color = get_user_meta(
     $user_id,
@@ -22,7 +21,7 @@ $admin_color = get_user_meta(
 $post_meta = get_metadata( 'post', $post_id<em></em> );
         ]]>
         </code>
-        <code title="Invalid: Get meta function called with the `$[meta_]key` parameter and without `$single` parameter.">
+        <code title="Invalid: Get meta function called with the `$[meta_]key` parameter, but without the `$single` parameter.">
         <![CDATA[
 $admin_color = get_user_meta(
     $user_id,

WordPress/Sniffs/WP/GetMetaFunctionSingleParameterSniff.php

@@ -36,9 +36,9 @@ final class GetMetaFunctionSingleParameterSniff extends AbstractFunctionParamete
 	/**
 	 * List of functions this sniff should examine.
 	 *
-	 * Once support for PHP 5.4 is dropped, it is possible to create two private properties
+	 * {@internal Once support for PHP < 5.6 is dropped, it is possible to create two class constants
 	 * representing the two different signatures of get meta functions to remove the duplication
-	 * of the name and position of the parameters.
+	 * of the name and position of the parameters.}
 	 *
 	 * @link https://developer.wordpress.org/reference/functions/get_comment_meta/
 	 * @link https://developer.wordpress.org/reference/functions/get_metadata/
@@ -172,7 +172,7 @@ public function process_parameters( $stackPtr, $group_name, $matched_content, $p
 		$this->phpcsFile->addWarning(
 			'When passing the $%s parameter to %s(), it is recommended to pass the $%s parameter as well to make it explicit whether an array or a string is expected.',
 			$stackPtr,
-			'ReturnTypeNotExplicit',
+			'Missing',
 			$message_data
 		);
 	}