PHP in 2011

Static Analysis

You can use HipHop-PHP to do static analysis

$ find /var/www -name '*.php' | grep -v phpunit > /tmp/hphp/files.txt
$ hhvm --hphp -t analyze \
  --input-list=/tmp/hphp/files.txt \
  --include-path="/var/www/include" \
  --output-dir=/tmp/hphp \
  --gen-stats=1 \
  --keep-tempdir=1

It will find these sorts of things

• Use of Undeclared Variables/Constants/Classes

• Calls to non-existent functions/methods

• Redefining constants

• Repeating a function parameter name in function declaration

• Required function parameters after optional ones in function declaration

• Too few/many arguments in a function call

• Code that will never be executed

• Use of Void return value

• Missing object context (using $this in a static method)