There is no license information available for the latest version (v0.1.0) of this package.

Provides PHP CodeSniffer sniffs to find unused and undefined variables.

v0.1.0 2016-02-12 16:40 UTC


Plugin for PHP_CodeSniffer static analysis tool that adds analysis of problematic variable use.

  • Performs static analysis of variable use.
  • Warns on use of undefined variables.
  • Warns if variables are set or declared but never used within that scope.
  • Warns if variables are redeclared within same scope.
  • Warns if $this, self::$static_member, static::$static_member is used outside class scope.
  • (new) Allows $this inside closures in PHP >=5.4
  • (new) Add analysis of instance variables ($this->...)


Run ./ -h to get install help.

For a default install of PHP_Codesniffer via PEAR with PEAR in ~/pear you should be safe to just run ./ to use the default options, then copy the rules from ruleset.xml into your own ruleset.xml.


There's a variety of options to customize the behaviour of VariableAnalysis, take a look at the included ruleset.xml for commented examples of a configuration.


  • File scope isn't currently analysed.