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License

Twig documentation is licensed under the new BSD license.

Deprecated Features

This document lists all deprecated features in Twig. Deprecated features are kept for backward compatibility and removed in the next major release (a feature that was deprecated in Twig 1.x is removed in Twig 2.0).

Deprecation Notices

As of Twig 1.21, Twig generates deprecation notices when a template uses deprecated features. See Displaying Deprecation Notices for more information.

Token Parsers

  • As of Twig 1.x, the token parser broker sub-system is deprecated. The following class and interface will be removed in 2.0:
    • Twig_TokenParserBrokerInterface
    • Twig_TokenParserBroker
  • As of Twig 1.27, Twig_Parser::getFilename() is deprecated. From a token parser, use $this->parser->getStream()->getSourceContext()->getPath() instead.
  • As of Twig 1.27, Twig_Parser::getEnvironment() is deprecated.

Extensions

  • As of Twig 1.x, the ability to remove an extension is deprecated and the Twig_Environment::removeExtension() method will be removed in 2.0.
  • As of Twig 1.23, the Twig_ExtensionInterface::initRuntime() method is deprecated. You have two options to avoid the deprecation notice: if you implement this method to store the environment for your custom filters, functions, or tests, use the needs_environment option instead; if you have more complex needs, explicitly implement Twig_Extension_InitRuntimeInterface (not recommended).
  • As of Twig 1.23, the Twig_ExtensionInterface::getGlobals() method is deprecated. Implement Twig_Extension_GlobalsInterface to avoid deprecation notices.
  • As of Twig 1.26, the Twig_ExtensionInterface::getName() method is deprecated and it is not used internally anymore.

PEAR

PEAR support has been discontinued in Twig 1.15.1, and no PEAR packages are provided anymore. Use Composer instead.

Filters

  • As of Twig 1.x, use Twig_SimpleFilter to add a filter. The following classes and interfaces will be removed in 2.0:
    • Twig_FilterInterface
    • Twig_FilterCallableInterface
    • Twig_Filter
    • Twig_Filter_Function
    • Twig_Filter_Method
    • Twig_Filter_Node
  • As of Twig 2.x, the Twig_SimpleFilter class is deprecated and will be removed in Twig 3.x (use Twig_Filter instead). In Twig 2.x, Twig_SimpleFilter is just an alias for Twig_Filter.

Functions

  • As of Twig 1.x, use Twig_SimpleFunction to add a function. The following classes and interfaces will be removed in 2.0:
    • Twig_FunctionInterface
    • Twig_FunctionCallableInterface
    • Twig_Function
    • Twig_Function_Function
    • Twig_Function_Method
    • Twig_Function_Node
  • As of Twig 2.x, the Twig_SimpleFunction class is deprecated and will be removed in Twig 3.x (use Twig_Function instead). In Twig 2.x, Twig_SimpleFunction is just an alias for Twig_Function.

Tests

  • As of Twig 1.x, use Twig_SimpleTest to add a test. The following classes and interfaces will be removed in 2.0:
    • Twig_TestInterface
    • Twig_TestCallableInterface
    • Twig_Test
    • Twig_Test_Function
    • Twig_Test_Method
    • Twig_Test_Node
  • As of Twig 2.x, the Twig_SimpleTest class is deprecated and will be removed in Twig 3.x (use Twig_Test instead). In Twig 2.x, Twig_SimpleTest is just an alias for Twig_Test.
  • The sameas and divisibleby tests are deprecated in favor of same as and divisible by respectively.

Tags

  • As of Twig 1.x, the raw tag is deprecated. You should use verbatim instead.

Nodes

  • As of Twig 1.x, Node::toXml() is deprecated and will be removed in Twig 2.0.
  • As of Twig 1.26, Node::$nodes should only contains Twig_Node instances, storing a null value is deprecated and won't be possible in Twig 2.x.
  • As of Twig 1.27, the filename attribute on Twig_Node_Module is deprecated. Use getName() instead.
  • As of Twig 1.27, the Twig_Node::getFilename()/Twig_Node::getLine() methods are deprecated, use Twig_Node::getTemplateName()/Twig_Node::getTemplateLine() instead.

Interfaces

  • As of Twig 2.x, the following interfaces are deprecated and empty (they will be removed in Twig 3.0):
  • Twig_CompilerInterface (use Twig_Compiler instead)
  • Twig_LexerInterface (use Twig_Lexer instead)
  • Twig_NodeInterface (use Twig_Node instead)
  • Twig_ParserInterface (use Twig_Parser instead)
  • Twig_ExistsLoaderInterface (merged with Twig_LoaderInterface)
  • Twig_SourceContextLoaderInterface (merged with Twig_LoaderInterface)
  • Twig_TemplateInterface (use Twig_Template instead, and use those constants Twig_Template::ANY_CALL, Twig_Template::ARRAY_CALL, Twig_Template::METHOD_CALL)

Compiler

  • As of Twig 1.26, the Twig_Compiler::getFilename() has been deprecated. You should not use it anyway as its values is not reliable.
  • As of Twig 1.27, the Twig_Compiler::addIndentation() has been deprecated. Use Twig_Compiler::write('') instead.

Loaders

  • As of Twig 1.x, Twig_Loader_String is deprecated and will be removed in 2.0. You can render a string via Twig_Environment::createTemplate().
  • As of Twig 1.27, Twig_LoaderInterface::getSource() is deprecated. Implement Twig_SourceContextLoaderInterface instead and use getSourceContext().

Node Visitors

  • Because of the removal of Twig_NodeInterface in 2.0, you need to extend Twig_BaseNodeVisitor instead of implementing Twig_NodeVisitorInterface directly to make your node visitors compatible with both Twig 1.x and 2.x.

Globals

  • As of Twig 2.x, the ability to register a global variable after the runtime or the extensions have been initialized is not possible anymore (but changing the value of an already registered global is possible).
  • As of Twig 1.x, using the _self global variable to get access to the current Twig_Template instance is deprecated; most usages only need the current template name, which will continue to work in Twig 2.0. In Twig 2.0, _self returns the current template name instead of the current Twig_Template instance.

Miscellaneous

  • As of Twig 1.x, Twig_Environment::clearTemplateCache(), Twig_Environment::writeCacheFile(), Twig_Environment::clearCacheFiles(), Twig_Environment::getCacheFilename(), Twig_Environment::getTemplateClassPrefix(), Twig_Environment::getLexer(), Twig_Environment::getParser(), and Twig_Environment::getCompiler() are deprecated and will be removed in 2.0.
  • As of Twig 1.x, Twig_Template::getEnvironment() and Twig_TemplateInterface::getEnvironment() are deprecated and will be removed in 2.0.
  • As of Twig 1.27, Twig_Error::getTemplateFile() and Twig_Error::setTemplateFile() are deprecated. Use Twig_Error::getTemplateName() and Twig_Error::setTemplateName() instead.
  • As of Twig 1.27, Twig_Template::getSource() is deprecated. Use Twig_Template::getSourceContext() instead.
  • As of Twig 1.27, Twig_Parser::addHandler() and Twig_Parser::addNodeVisitor() are deprecated and will be removed in 2.0.
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