phan/phan 2.4.6

Release 2.4.6 supporting PHP 7.0-7.4 syntax

on PHP Packagist

New features(CLI, Configs):

• Add more detailed instructions for installing dependencies new php installations on Windows without a php.ini
• Handle being installed in a non-standard composer directory name (i.e. not vendor) (mentioned in #1612)

New Features(Analysis):

• Improve inferred array shapes for multi-dimensional assignments or conditions on arrays
  (e.g. $x['first']['second'] = expr or if (cond($x['first']['second']))) (#1510, #3569)
• Infer that array offsets are no longer possibly undefined after conditions such as if (!is_null($x['offset']))
• Improve worst-case runtime when merging union types with many types (#3587)
• Improve analysis of assignment operators. (#3597)
• Infer $x op= expr and ++/-- operators have a literal value when possible, outside of loops. (#3250, #3248)
• Move PhanUndeclaredInterface and PhanUndeclaredTrait warnings to the line number of the use/implements. (#2159)
• Don't emit PhanUndeclaredGlobalVariable for the left side of ??/??= in the global scope (#3601)
• More consistently infer that variables are possibly undefined if they are not defined in all branches. (#1345, #1942)
• Add new issue types for possibly undeclared variables: PhanPossiblyUndeclaredVariable and PhanPossiblyUndeclaredGlobalVariable.

Plugins:

• Add StrictLiteralComparisonPlugin to warn about loose equality comparisons of constant string/int to other values. (#2310)

Bug fixes:

• Fix false positive PhanTypePossiblyInvalidDimOffset seen after
  other array fields get added to an array shape by assignment or condition (#3579, #3569)
• Properly extract the value of binary integer literals and binary/hex/octal float literals in the polyfill/fallback parser. (#3586)