Confusing Variables

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$file_name

• $filename

One _ $patron_list

• $PATRON_LIST

Case $VAULT_1

• $VAULT_2
• $VAULT_3

One digit $VAULT_2

• $VAULT_1
• $VAULT_3

One digit $VAULT_3

• $VAULT_1
• $VAULT_2

One digit $str

• $rstr

One letter $row

• $rows

One letter $tag

• $tags

One letter $tmp

• $temp

One letter $ext

• $text

One letter $cat

• $cats

One letter $item

• $items

One letter $filename

• $file_name

One letter