Similar looking variables

This is the list of similar looking variables, found across the application. They might be confused one with the other.

One _ : the difference in the name is only _ (underscore); Case : the difference in the name is only the case; One letter : the difference in the name is only one letter;One digit : the difference in the name is only one digit;Partial inversion : the variable name may be broken in two pieces, which were inverted;

Variable	Variables	Reason
$path_info	$pathinfo	One _
$_files	$files	One _
$mime_type	$mimetype	One _
$in_reply_to	$inreplyto	One _
$short_url	$shorturl	One _
$hide_nav	$hidenav	One _
$email_address	$emailaddress	One _
$file_name	$filename	One _
$bookmark_of	$bookmarkof	One _
$like_of	$likeof	One _
$repost_of	$repostof	One _
$place_name	$placename	One _
$_url	$url	One _
$_file	$file	One _
$_file	$_files	One letter
$h_card	$hcard	One _
$url	$Url	Case
$url	$_url $urls	One letter
$eventdata	$eventData	Case
$shellvars	$shellVars	Case
$pageurl	$pageURL	Case
$varname	$varName	Case
$file2	$file	One digit
$class2	$class	One digit
$txt2	$txt	One digit
$obj2	$obj	One digit
$id1	$id2	One digit
$id2	$id1	One digit
$timezone1	$timezone $timezone2	One digit
$timezone2	$timezone $timezone1	One digit
$offset1	$offset $offset2	One digit
$offset2	$offset $offset1	One digit
$password2	$password	One digit
$txt	$text $txt2	One letter
$key	$keys	One letter
$obj	$objs $obj2	One letter
$tmp	$temp	One letter
$row	$rows	One letter
$bit	$bits	One letter
$str	$star	One letter
$hub	$hubs	One letter
$tag	$tags	One letter
$ext	$text $exit	One letter
$log	$long	One letter
$var	$vars	One letter
$not	$note	One letter
$end	$send	One letter
$lat	$last	One letter
$acl	$acls	One letter
$elt	$elts	One letter
$uid	$uuid	One letter
$msg	$msgs	One letter
$path	$xpath $paths	One letter
$file	$file2 $files $_file	One letter
$user	$users	One letter
$slug	$slugs	One letter
$page	$pages	One letter
$feed	$feeds	One letter
$data	$bdata	One letter
$time	$timer	One letter
$verb	$verbs	One letter
$type	$types	One letter
$line	$lines	One letter
$item	$items	One letter
$icon	$icons	One letter
$para	$paras $param	One letter
$part	$parts	One letter
$size	$sizes	One letter
$mail	$email	One letter
$like	$likes	One letter
$card	$hcard $cards	One letter
$sort	$short	One letter
$prop	$props	One letter
$rsvp	$rsvps	One letter
$word	$words	One letter
$hook	$hooks	One letter
$star	$start	One letter
$class	$class2	One letter
$title	$titles	One letter
$cache	$cached	One letter
$owner	$owners	One letter
$event	$events	One letter
$stats	$status	One letter
$email	$emails	One letter
$value	$values	One letter
$label	$labels	One letter
$group	$groups	One letter
$field	$fields	One letter
$files	$_files	One letter
$image	$images	One letter
$paras	$params	One letter
$style	$styles	One letter
$hcard	$hcards $h_card	One letter
$notif	$notify $notifs	One letter
$theme	$themes	One letter
$route	$routes	One letter
$cards	$hcards	One letter
$photo	$photos	One letter
$param	$params	One letter
$result	$results $bresult	One letter
$source	$sources	One letter
$object	$objects	One letter
$offset	$offset1 $offset2	One letter
$config	$configs	One letter
$folder	$folders	One letter
$header	$headers	One letter
$string	$strings	One letter
$plugin	$plugins	One letter
$update	$updated	One letter
$accept	$accepts	One letter
$record	$records	One letter
$handle	$handler	One letter
$create	$created	One letter
$detail	$details	One letter
$likeof	$like_of	One letter
$toggle	$toggles	One letter
$option	$options	One letter
$script	$scripts	One letter
$button	$buttons	One letter
$account	$accounts	One letter
$version	$versions	One letter
$message	$messages	One letter
$content	$contents	One letter
$service	$services	One letter
$setting	$settings	One letter
$default	$defaults	One letter
$element	$elements	One letter
$replace	$replaced	One letter
$mention	$mentions	One letter
$subtype	$subtypes	One letter
$tmpname	$tmpfname	One letter
$hidenav	$hide_nav	One letter
$filename	$file_name	One letter
$variable	$variables	One letter
$timezone	$timezone1 $timezone2 $timezones	One letter
$hash_tag	$hash_tags	One letter
$shorturl	$short_url	One letter
$password	$password2	One letter
$repostof	$repost_of	One letter
$pathinfo	$path_info	One letter
$mimetype	$mime_type	One letter
$extension	$extensions	One letter
$component	$components	One letter
$temp_type	$temp_types	One letter
$statement	$statements	One letter
$namespace	$namespaces	One letter
$reply_url	$reply_urls	One letter
$recipient	$recipients	One letter
$syndicate	$syndicated	One letter
$placename	$place_name	One letter
$page_icon	$page_icons	One letter
$attachment	$attachments	One letter
$annotation	$annotations	One letter
$invitation	$invitations	One letter
$permission	$permissions	One letter
$bookmarkof	$bookmark_of	One letter
$posse_link	$posse_links	One letter
$placeholder	$placeholders	One letter
$notification	$notifications	One letter
$content_type	$content_types	One letter
$templateType	$templateTypes	One letter
$emailaddress	$email_address	One letter
$subscription	$subscriptions	One letter
$friendly_type	$friendly_types	One letter
$account_string	$account_strings	One letter
$selected_service	$selected_services	One letter
$existing_annotation	$existing_annotations	One letter
$basepath	$pathbase	Partial inversion
$pathbase	$basepath	Partial inversion