CHANGELOG

4.4.0

• Added support for parsing the inline notation spanning multiple lines.
• Added support to dump null as ~ by using the Yaml::DUMP_NULL_AS_TILDE flag.
• deprecated accepting STDIN implicitly when using the lint:yaml command, use lint:yaml - (append a dash) instead to make it explicit.

4.3.0

• Using a mapping inside a multi-line string is deprecated and will throw a ParseException in 5.0.

4.2.0

• added support for multiple files or directories in LintCommand

4.0.0

• The behavior of the non-specific tag ! is changed and now forces non-evaluating your values.
• complex mappings will throw a ParseException
• support for the comma as a group separator for floats has been dropped, use the underscore instead
• support for the !!php/object tag has been dropped, use the !php/object tag instead
• duplicate mapping keys throw a ParseException
• non-string mapping keys throw a ParseException, use the Yaml::PARSE_KEYS_AS_STRINGS flag to cast them to strings
• % at the beginning of an unquoted string throw a ParseException
• mappings with a colon (:) that is not followed by a whitespace throw a ParseException
• the Dumper::setIndentation() method has been removed
• being able to pass boolean options to the Yaml::parse(), Yaml::dump(), Parser::parse(), and Dumper::dump() methods to configure the behavior of the parser and dumper is no longer supported, pass bitmask flags instead
• the constructor arguments of the Parser class have been removed
• the Inline class is internal and no longer part of the BC promise
• removed support for the !str tag, use the !!str tag instead

• added support for tagged scalars.

  Yaml::parse('!foo bar', Yaml::PARSE_CUSTOM_TAGS);
  // returns TaggedValue('foo', 'bar');
  

3.4.0

• added support for parsing YAML files using the Yaml::parseFile() or Parser::parseFile() method

• the Dumper, Parser, and Yaml classes are marked as final

• Deprecated the !php/object: tag which will be replaced by the !php/object tag (without the colon) in 4.0.

• Deprecated the !php/const: tag which will be replaced by the !php/const tag (without the colon) in 4.0.

• Support for the !str tag is deprecated, use the !!str tag instead.

• Deprecated using the non-specific tag ! as its behavior will change in 4.0. It will force non-evaluating your values in 4.0. Use plain integers or !!float instead.

3.3.0

• Starting an unquoted string with a question mark followed by a space is deprecated and will throw a ParseException in Symfony 4.0.

• Deprecated support for implicitly parsing non-string mapping keys as strings. Mapping keys that are no strings will lead to a ParseException in Symfony 4.0. Use quotes to opt-in for keys to be parsed as strings.

  Before:

  $yaml = <<<YAML
  null: null key
  true: boolean true
  2.0: float key
  YAML;
  
  Yaml::parse($yaml);
  

  After:

  
  $yaml = <<<YAML
  "null": null key
  "true": boolean true
  "2.0": float key
  YAML;
  
  Yaml::parse($yaml);
  

• Omitted mapping values will be parsed as null.

• Omitting the key of a mapping is deprecated and will throw a ParseException in Symfony 4.0.

• Added support for dumping empty PHP arrays as YAML sequences:

  Yaml::dump([], 0, 0, Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE);
  

3.2.0

• Mappings with a colon (:) that is not followed by a whitespace are deprecated when the mapping key is not quoted and will lead to a ParseException in Symfony 4.0 (e.g. foo:bar must be foo: bar).

• Added support for parsing PHP constants:

  Yaml::parse('!php/const:PHP_INT_MAX', Yaml::PARSE_CONSTANT);
  

• Support for silently ignoring duplicate mapping keys in YAML has been deprecated and will lead to a ParseException in Symfony 4.0.

3.1.0

• Added support to dump stdClass and ArrayAccess objects as YAML mappings through the Yaml::DUMP_OBJECT_AS_MAP flag.

• Strings that are not UTF-8 encoded will be dumped as base64 encoded binary data.

• Added support for dumping multi line strings as literal blocks.

• Added support for parsing base64 encoded binary data when they are tagged with the !!binary tag.

• Added support for parsing timestamps as \DateTime objects:

  Yaml::parse('2001-12-15 21:59:43.10 -5', Yaml::PARSE_DATETIME);
  

• \DateTime and \DateTimeImmutable objects are dumped as YAML timestamps.

• Deprecated usage of % at the beginning of an unquoted string.

• Added support for customizing the YAML parser behavior through an optional bit field:

  Yaml::parse('{ "foo": "bar", "fiz": "cat" }', Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE | Yaml::PARSE_OBJECT | Yaml::PARSE_OBJECT_FOR_MAP);
  

• Added support for customizing the dumped YAML string through an optional bit field:

  Yaml::dump(['foo' => new A(), 'bar' => 1], 0, 0, Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE | Yaml::DUMP_OBJECT);
  

3.0.0

• Yaml::parse() now throws an exception when a blackslash is not escaped in double-quoted strings

2.8.0

• Deprecated usage of a colon in an unquoted mapping value
• Deprecated usage of @, `, | and > at the beginning of an unquoted string

• When surrounding strings with double-quotes, you must now escape \ characters. Not escaping those characters (when surrounded by double-quotes) is deprecated.

  Before:

  class: "Foo\Var"
  

  After:

  class: "Foo\\Var"
  

2.1.0

• Yaml::parse() does not evaluate loaded files as PHP files by default anymore (call Yaml::enablePhpParsing() to get back the old behavior)