nvim-treesitter/queries/php/indents.scm

[
  (array_creation_expression)
  (compound_statement)
  (declaration_list)
  (binary_expression)
  (return_statement)
  (arguments)
  (formal_parameters)
  (enum_declaration_list)
  (switch_block)
  (match_block)
  (case_statement)
] @indent.begin

[
  ")"
  "}"
  "]"
] @indent.branch

[
  (comment)
] @indent.auto

(compound_statement "}" @indent.end)

(ERROR
  "(" @indent.align
  . (_)
  (#set! indent.open_delimiter "(")
  (#set! indent.close_delimiter ")"))
(ERROR
  "[" @indent.align
  . (_)
  (#set! indent.open_delimiter "[")
  (#set! indent.close_delimiter "]"))