phan/phan 2.4.0

Release 2.4.0 supporting PHP 7.0-7.4 syntax

on PHP Packagist

New features(CLI, Configs):

• Support saving and loading baselines with --save-baseline=.phan/baseline.php and --load-baseline=.phan/baseline.php. (#2000)
  --save-baseline will save all pre-existing issues for the provided analysis settings to a file.
  When Phan is invoked later with --load-baseline, it will ignore any
  issue kinds in the files from file_suppressions in the baseline.

  This is useful for setting up analysis with Phan on a new project,
  or when enabling stricter analysis settings.

  Different baseline files can be used for different Phan configurations.
  (e.g. .phan/baseline_deadcode.php for runs with --dead-code-detection)

New features(Analysis):

• Fix edge cases in checking if some nullable types were possibly falsey
  (?true and literal floats (e.g. ?1.1))
• Emit PhanCoalescingNeverNull instead of PhanCoalescingNeverNullIn*
  if it's impossible for the node kind to be null. (#3386)
• Warn about array destructuring syntax errors ([] = $arr, [$withoutKey, 1 => $withKey] = $arr)
• Return a clone of an existing variable if one already exists in Variable::fromNodeInContext. (#3406)
  This helps analyze PassByReferenceVariables.
• Don't emit PhanParamSpecial2 for min/max/implode/join with a single vararg. (#3396)
• Properly emit PhanPossiblyInfiniteRecursionSameParams for functions with varargs.
• Emit PhanNoopNew or PhanNoopNewNoSideEffects when an object is created with new expr(...) but the result is not used (#3410)
• Emit PhanPluginUseReturnValueInternalKnown for about unused results of function calls on the right hand side of control flow operators (??/?:/&&/||) (#3408)