[parameters]
  true = true
  true_comment = true ; comment
  false = false
  null = null
  on = on
  off = off
  yes = yes
  no = no
  none = none
  constant = PHP_VERSION
  12_int = 12
  12_string = '12'
  12_quoted_number = "12"
  12_comment = 12 ; comment
  12_string_comment = '12' ; comment
  12_quoted_number_comment = "12" ; comment
  -12_negative = -12
  zero = 0
  one = 1
  0b0110_byte_string = 0b0110
  11112222333344445555_great_number = 1111,2222,3333,4444,5555
  0777_number_starting_with_0 = 0777
  255_hexadecimal = 0xFF
  100.0_exponential = 1e2
  -120.0_exponential = -1.2E2
  -10100.1_negative_float = -10100.1
  -10,100.1_negative_float = -10,100.1
  list[] = 1
  list[] = 2
  map[one] = 1
  map[two] = 2