I don't understand how to use the extension about vscode-php-cs-fixer HOT 12 CLOSED

'@PSR12' => true,
     '@PhpCsFixer' => true,
     'array_indentation' => true,
     'array_syntax' => ['syntax' => 'short'],
     'list_syntax' => ['syntax' => 'long'],
     // 'method_separation' => true,
     'multiline_whitespace_before_semicolons' => false,
     'single_quote' => true,
     //'binary_operator_spaces' => array(
     // 'align_double_arrow' => false,
     // 'align_equals' => false,
     //),
     // 'blank_line_after_opening_tag' => true,
     // 'blank_line_before_return' => true,
     'braces' => [
       'allow_single_line_closure' => true,
       'position_after_functions_and_oop_constructs' => 'same',
     ],
     //'header_comment' => ['header' => $header],
     'combine_consecutive_issets' => true,
     'combine_consecutive_unsets' => true,
     // 'cast_spaces' => true,
     // 'class_definition' => array('singleLine' => true),
     'concat_space' => ['spacing' => 'one'],
     'declare_equal_normalize' => true,
     'function_typehint_space' => true,
     // 'hash_to_slash_comment' => true,
     'include' => true,
     'lowercase_cast' => true,
     // 'native_function_casing' => true,
     // 'new_with_braces' => true,
     // 'no_blank_lines_after_class_opening' => true,
     // 'no_blank_lines_after_phpdoc' => true,
     // 'no_empty_comment' => true,
     // 'no_empty_phpdoc' => true,
     // 'no_empty_statement' => true,
     //'no_extra_consecutive_blank_lines' => array(
     // 'curly_brace_block',
     // 'extra',
     // 'parenthesis_brace_block',
     // 'square_brace_block',
     // 'throw',
     // 'use',
     //),
     // 'no_leading_import_slash' => true,
     // 'no_leading_namespace_whitespace' => true,
     // 'no_mixed_echo_print' => array('use' => 'echo'),
     'no_multiline_whitespace_around_double_arrow' => true,
     // 'no_short_bool_cast' => true,
     // 'no_singleline_whitespace_before_semicolons' => true,
     'no_spaces_around_offset' => true,
     // 'no_trailing_comma_in_list_call' => true,
     // 'no_trailing_comma_in_singleline_array' => true,
     // 'no_unneeded_control_parentheses' => true,
     // 'no_unused_imports' => true,
     'no_whitespace_before_comma_in_array' => true,
     'no_whitespace_in_blank_line' => true,
     // 'normalize_index_brace' => true,
     'object_operator_without_whitespace' => true,
     // 'php_unit_fqcn_annotation' => true,
     // 'phpdoc_align' => true,
     // 'phpdoc_annotation_without_dot' => true,
     // 'phpdoc_indent' => true,
     // 'phpdoc_inline_tag' => true,
     // 'phpdoc_no_access' => true,
     // 'phpdoc_no_alias_tag' => true,
     // 'phpdoc_no_empty_return' => true,
     // 'phpdoc_no_package' => true,
     // 'phpdoc_no_useless_inheritdoc' => true,
     // 'phpdoc_return_self_reference' => true,
     // 'phpdoc_scalar' => true,
     // 'phpdoc_separation' => true,
     // 'phpdoc_single_line_var_spacing' => true,
     // 'phpdoc_summary' => true,
     // 'phpdoc_to_comment' => true,
     // 'phpdoc_trim' => true,
     // 'phpdoc_types' => true,
     // 'phpdoc_var_without_name' => true,
     // 'pre_increment' => true,
     // 'return_type_declaration' => true,
     // 'self_accessor' => true,
     // 'short_scalar_cast' => true,
     'single_blank_line_before_namespace' => true,
     // 'single_class_element_per_statement' => true,
     // 'space_after_semicolon' => true,
     // 'standardize_not_equals' => true,
     'ternary_operator_spaces' => true,
     // 'trailing_comma_in_multiline' => ['elements' => ['arrays']],
     'trim_array_spaces' => true,
     'unary_operator_spaces' => true,
     'whitespace_after_comma_in_array' => true,