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21. What are the dangerous functions for PHP code execution and PHP command execution?

PHP Code Execution​

  • call_user_func()
  • call_user_func_array()
  • create_function()
  • array_map()

PHP Command Execution​

  • system()
  • shell_exec()
  • passthru()
  • exec()
  • popen()
  • proc_open()
  • putenv()