Executar php -l em todos os arquivos de um projeto.

files.py

#!/usr/bin/env python

import os
import subprocess


class ArrayInterator:

    path = '/var/www/project/'
    ext = '.php'

    def step(self, (ext), dirname, names):
        ext = ext.lower()

        for name in names:
            if name.lower().endswith(ext):
                # Instead of printing, open up the log file for appending
                self.command(os.path.join(dirname, name))

    def command(self, file=None):
        if file:
            u'print file'
            subprocess.call(["php", "-l", file])
        else:
            print "Arquivo nao informado."

    def __init__(self):
        os.path.walk(self.path, self.step, (self.ext))


def main():

    ArrayInterator()
    return 0

if __name__ == "__main__":
    main()