Confusing Variables

{{DESCRIPTION}}.

$product_id

$_product_id

One _

$product_ids
$_product_id

One letter $_object

$object

One _ $_product_id

$product_id

One _ $file_name

$filename

One _ $post_data

$postdata

One _ $user_name

$username

One _

$user_names

One letter $comment_data

$commentdata

One _ $datetime

$dateTime

Case $key

$keys

One letter $job

$jobs

One letter $cap

$caps

One letter $arg

$args

One letter $row

$rows

One letter $tab

$tabs

One letter $log

$logs

One letter $post

$posts

One letter $user

$users

One letter $file

$files

One letter $rule

$rules

One letter $plan

$plans

One letter $term

$terms

One letter $note

$notes

One letter $date

$dates
$tdate

One letter $type

$types

One letter $item

$items

One letter $mode

$modes

One letter $atts

$attrs

One letter $page

$paged
$pages

One letter $link

$links

One letter $view

$views

One letter $hook

$hooks

One letter $part

$parts

One letter $tday

$today

One letter $value

$values

One letter $price

$prices

One letter $label

$labels

One letter $order

$orders

One letter $count

$counts

One letter $email

$emails

One letter $error

$errors

One letter $field

$fields

One letter $topic

$topics

One letter $event

$events

One letter $param

$params

One letter $stats

$status

One letter $plugin

$plugins

One letter $action

$actions

One letter $object

$objects
$_object

One letter $method

$methods

One letter $update

$updated

One letter $parent

$parents

One letter $period

$periods

One letter $amount

$amounts

One letter $result

$results

One letter $clause

$clauses

One letter $length

$lengths

One letter $member

$members

One letter $handle

$handler
$handled

One letter $column

$columns

One letter $toggle

$toggles

One letter $record

$records

One letter $message

$messages

One letter $product

$products

One letter $content

$contents

One letter $section

$sections

One letter $user_id

$user_ids

One letter $plan_id

$plan_ids

One letter $default

$defaults

One letter $post_id

$post_ids

One letter $term_id

$term_ids

One letter $warning

$warnings

One letter $version

$versions

One letter $comment

$comments

One letter $keyword

$keywords

One letter $setting

$settings

One letter $segment

$segments

One letter $order_id

$order_ids

One letter $discount

$discounts

One letter $username

$user_name

One letter $meta_key

$meta_keys

One letter $interval

$intervals

One letter $add_rule

$add_rules

One letter $email_id

$email_ids

One letter $schedule

$scheduled
$schedules
$scheduler

One letter $sort_key

$short_key

One letter $resource

$resources

One letter $new_rule

$new_rules

One letter $filename

$file_name

One letter $postdata

$post_data

One letter $query_var

$query_vars

One letter $rule_type

$rule_types

One letter $object_id

$object_ids

One letter $post_type

$post_types

One letter $attribute

$attributes

One letter $cart_item

$cart_items

One letter $variation

$variations

One letter $parent_id

$parent_ids

One letter $plan_rule

$plan_rules

One letter $shortcode

$shortcodes

One letter $merge_tag

$merge_tags

One letter $condition

$conditions

One letter $post_link

$post_links

One letter $screen_id

$screen_ids

One letter $rule_args

$rules_args

One letter $post_args

$posts_args

One letter $action_id

$action_ids

One letter $parameter

$parameters

One letter $status_key

$status_keys

One letter $membership

$memberships

One letter $content_id

$content_ids

One letter $access_type

$access_types

One letter $commentdata

$comment_data

One letter $update_rule

$update_rules

One letter $delete_rule

$delete_rules

One letter $object_type

$object_types

One letter $placeholder

$placeholders

One letter $object_name

$object_names

One letter $integration

$integrations

One letter $bulk_action

$bulk_actions

One letter $access_plan

$access_plans

One letter $message_type

$message_types

One letter $variation_id

$variation_ids

One letter $delete_rules

$deleted_rules

One letter $grant_access

$grants_access

One letter $compact_rule

$compact_rules

One letter $update_rules

$updated_rules

One letter $include_path

$include_paths

One letter $query_string

$query_strings

One letter $subscription

$subscriptions

One letter $action_count

$action_counts

One letter $status_label

$status_labels

One letter $error_message

$error_messages

One letter $discount_rule

$discount_rules

One letter $email_setting

$email_settings

One letter $access_method

$access_methods

One letter $existing_rule

$existing_rules

One letter $legacy_message

$legacy_messages

One letter $original_price

$original_prices

One letter $previous_owner

$previous_owners

One letter $child_discount

$child_discounts

One letter $rule_object_id

$rule_object_ids

One letter $access_product

$access_products

One letter $chosen_product

$chosen_products

One letter $merge_tag_help

$merge_tags_help

One letter $variation_rule

$variation_rules

One letter $user_membership

$user_memberships

One letter $membership_plan

$membership_plans

One letter $exclude_product

$exclude_products

One letter $discount_amount

$discount_amounts

One letter $member_discount

$member_discounts

One letter $restricted_term

$restricted_terms

One letter $default_section

$default_sections

One letter $free_membership

$free_memberships

One letter $installed_plugin

$installed_plugins

One letter $exclude_products

$excluded_products

One letter $order_product_id

$order_product_ids

One letter $status_list_item

$status_list_items

One letter $subscription_post

$subscription_posts

One letter $user_membership_id

$user_membership_ids

One letter $membership_plan_id

$membership_plan_ids

One letter $access_length_type

$access_length_types

One letter $discounted_product

$discounted_products

One letter $product_for_renewal

$products_for_renewal

One letter $related_category_id

$related_category_ids

One letter $membership_plan_api

$membership_plans_api

One letter $customer_membership

$customer_memberships

One letter $user_membership_post

$user_membership_posts

One letter $members_area_section

$members_area_sections

One letter $subscription_product

$subscription_products

One letter $access_length_period

$access_length_periods

One letter $user_membership_posts

$user_memberships_posts

One letter $found_unmigrated_action

$found_unmigrated_actions

One letter $access_granting_product_id

$access_granting_product_ids

One letter