To be fair, there are similar tools for most languages.
One of the most comprehensive tools for doing automated quality reviews of code is Sonar ( http://www.sonarsource.org/ ). It supports pretty much all programming languages (thought not all for free).
For example, for PHP code sonar runs a combination of PHP_CodeSniffer, PHPMD, phpDepend and phpunit and integrates the reporting of all those tools.
Comments
To be fair, there are similar tools for most languages.
One of the most comprehensive tools for doing automated quality reviews of code is Sonar ( http://www.sonarsource.org/ ). It supports pretty much all programming languages (thought not all for free).
For example, for PHP code sonar runs a combination of PHP_CodeSniffer, PHPMD, phpDepend and phpunit and integrates the reporting of all those tools.