Code Modernization: Rename parameters that use reserved keywords in wp-includes/post.php.

While using reserved PHP keywords as parameter name labels is allowed, in the context of function calls using named parameters in PHP 8.0+, this will easily lead to confusion. To avoid that, it is recommended not to use reserved keywords as function parameter names.

This commit:
* Renames the `$object` parameter to `$data_object` in `_get_custom_object_labels()`.
* Renames the `$parent` parameter to `$parent_post` in `wp_insert_attachment()`.

Follow-up to [52946], [52996], [52997], [52998], [53003], [53014], [53029], [53039], [53116], [53117], [53137], [53174], [53184], [53185], [53192], [53193], [53198], [53203], [53207], [53215], [53216], [53220], [53230], [53232], [53236], [53239], [53240], [53242], [53243], [53245], [53246], [53257], [53269], [53270], [53271], [53272], [53273], [53274], [53275], [53276], [53277], [53281], [53283], [53284], [53285], [53287], [53364], [53365], [54927], [54929], [54930], [54931], [54932], [54933], [54938], [54943], [54944], [54945], [54946], [54947], [54948], [54950], [54951], [54952], [54956], [54959], [54960].

Props jrf, aristath, poena, justinahinon, SergeyBiryukov.
See #56788.

git-svn-id: https://develop.svn.wordpress.org/trunk@54961 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-includes/post.php

@@ -2019,43 +2019,47 @@ function get_post_type_labels( $post_type_object ) {
  * @since 3.0.0
  * @access private
  *
- * @param object $object                  A custom-something object.
+ * @param object $data_object             A custom-something object.
  * @param array  $nohier_vs_hier_defaults Hierarchical vs non-hierarchical default labels.
  * @return object Object containing labels for the given custom-something object.
  */
-function _get_custom_object_labels( $object, $nohier_vs_hier_defaults ) {
-	$object->labels = (array) $object->labels;
+function _get_custom_object_labels( $data_object, $nohier_vs_hier_defaults ) {
+	$data_object->labels = (array) $data_object->labels;
 
-	if ( isset( $object->label ) && empty( $object->labels['name'] ) ) {
-		$object->labels['name'] = $object->label;
+	if ( isset( $data_object->label ) && empty( $data_object->labels['name'] ) ) {
+		$data_object->labels['name'] = $data_object->label;
 	}
 
-	if ( ! isset( $object->labels['singular_name'] ) && isset( $object->labels['name'] ) ) {
-		$object->labels['singular_name'] = $object->labels['name'];
+	if ( ! isset( $data_object->labels['singular_name'] ) && isset( $data_object->labels['name'] ) ) {
+		$data_object->labels['singular_name'] = $data_object->labels['name'];
 	}
 
-	if ( ! isset( $object->labels['name_admin_bar'] ) ) {
-		$object->labels['name_admin_bar'] = isset( $object->labels['singular_name'] ) ? $object->labels['singular_name'] : $object->name;
+	if ( ! isset( $data_object->labels['name_admin_bar'] ) ) {
+		$data_object->labels['name_admin_bar'] =
+			isset( $data_object->labels['singular_name'] )
+			? $data_object->labels['singular_name']
+			: $data_object->name;
 	}
 
-	if ( ! isset( $object->labels['menu_name'] ) && isset( $object->labels['name'] ) ) {
-		$object->labels['menu_name'] = $object->labels['name'];
+	if ( ! isset( $data_object->labels['menu_name'] ) && isset( $data_object->labels['name'] ) ) {
+		$data_object->labels['menu_name'] = $data_object->labels['name'];
 	}
 
-	if ( ! isset( $object->labels['all_items'] ) && isset( $object->labels['menu_name'] ) ) {
-		$object->labels['all_items'] = $object->labels['menu_name'];
+	if ( ! isset( $data_object->labels['all_items'] ) && isset( $data_object->labels['menu_name'] ) ) {
+		$data_object->labels['all_items'] = $data_object->labels['menu_name'];
 	}
 
-	if ( ! isset( $object->labels['archives'] ) && isset( $object->labels['all_items'] ) ) {
-		$object->labels['archives'] = $object->labels['all_items'];
+	if ( ! isset( $data_object->labels['archives'] ) && isset( $data_object->labels['all_items'] ) ) {
+		$data_object->labels['archives'] = $data_object->labels['all_items'];
 	}
 
 	$defaults = array();
 	foreach ( $nohier_vs_hier_defaults as $key => $value ) {
-		$defaults[ $key ] = $object->hierarchical ? $value[1] : $value[0];
+		$defaults[ $key ] = $data_object->hierarchical ? $value[1] : $value[0];
 	}
-	$labels         = array_merge( $defaults, $object->labels );
-	$object->labels = (object) $object->labels;
+
+	$labels              = array_merge( $defaults, $data_object->labels );
+	$data_object->labels = (object) $data_object->labels;
 
 	return (object) $labels;
 }
@@ -6323,21 +6327,21 @@ function is_local_attachment( $url ) {
  *
  * @param string|array $args             Arguments for inserting an attachment.
  * @param string|false $file             Optional. Filename.
- * @param int          $parent           Optional. Parent post ID.
+ * @param int          $parent_post      Optional. Parent post ID.
  * @param bool         $wp_error         Optional. Whether to return a WP_Error on failure. Default false.
  * @param bool         $fire_after_hooks Optional. Whether to fire the after insert hooks. Default true.
  * @return int|WP_Error The attachment ID on success. The value 0 or WP_Error on failure.
  */
-function wp_insert_attachment( $args, $file = false, $parent = 0, $wp_error = false, $fire_after_hooks = true ) {
+function wp_insert_attachment( $args, $file = false, $parent_post = 0, $wp_error = false, $fire_after_hooks = true ) {
 	$defaults = array(
 		'file'        => $file,
 		'post_parent' => 0,
 	);
 
 	$data = wp_parse_args( $args, $defaults );
 
-	if ( ! empty( $parent ) ) {
-		$data['post_parent'] = $parent;
+	if ( ! empty( $parent_post ) ) {
+		$data['post_parent'] = $parent_post;
 	}
 
 	$data['post_type'] = 'attachment';