parsing - How can I parse this text format with PHP? -

How can I parse this data with PHP? I do not recognize the format. It seems that the name of the area comes from [a-z] and _ . Sub-field should be indented with 2 spaces

  --- field_name: sub-field: this text content is sub_field1: | - This is multilingual text content. It has multiline text content. It is multiline text content. It is multiline text content. Thanks Number_field: 2 other_field: '' array_field: [] field_name 1: subfold_source_value: note: all types in single row text field There may be rows, this is also a 'note' field ...  

Is a file. See.