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I am trying to create a helloworld GAE projects to use PHP to connect to a Google Cloud SQL database. I am following the steps found at: https://developers.google.com/appengine/docs/php/gettingstarted/helloworld

However, whenever I start the dev_appserver.py to test my helloworld.php I eventually get a permission denied error. I am running Cygwin (mintty) on a Win8 (64) machine. I have run chmod -R 777 * on a number of related directories like: /usr/bin/

  1. c:/Development/appengine-php-sdk-1.8.0/
  2. c:/Development/php/
  3. c:/Development/Php Scripts/helloworld/

Error: 

File "/usr/lib/python2.7/threading.py", line 551, in __bootstrap_inner
    self.run()

 File "/usr/lib/python2.7/threading.py", line 504, in run
    self.__target(*self.__args, **self.__kwargs)

File "/cygdrive/c/Development/appengine-php-sdk-1.8.0/google_appengine/google/appengine/tools/devappserver2/server.py", line 1232, in _loop_adjusting_instances
    self._adjust_instances()

File "/cygdrive/c/Development/appengine-php-sdk-1.8.0/google_appengine/google/appengine/tools/devappserver2/server.py", line 1209, in _adjust_instances
    self._add_instance(permit_warmup=True)


 File "/cygdrive/c/Development/appengine-php-sdk-1.8.0/google_appengine/google/appengine/tools/devappserver2/server.py", line 1087, in _add_instance
    expect_ready_request=perform_warmup)

 File "/cygdrive/c/Development/appengine-php-sdk-1.8.0/google_appengine/google/appengine/tools/devappserver2/php_runtime.py", line 195, in new_instance
    self._check_environment(php_executable_path)

 File "/cygdrive/c/Development/appengine-php-sdk-1.8.0/google_appengine/google/appengine/tools/devappserver2/php_runtime.py", line 138, in _check_environment
    env={})

File "/cygdrive/c/Development/appengine-php-sdk-1.8.0/google_appengine/google/appengine/tools/devappserver2/safe_subprocess.py", line 61, in start_process
    stdin=subprocess.PIPE)

File "/usr/lib/python2.7/subprocess.py", line 679, in __init__
    errread, errwrite)

 File "/usr/lib/python2.7/subprocess.py", line 1248, in _execute_child
    raise child_exception

OSError: [Errno 13] Permission denied

How can I determine what file the permission issue is with?

EDIT There is no traceback from this new error (now that I am calling the actual exe): WARNING 2013-06-04 02:21:13,243 api_server.py:329] Could not initialize images API; you are likely missing the Python "PIL" module. INFO 2013-06-04 02:21:13,252 api_server.py:153] Starting API server at: http://localhost:51615 INFO 2013-06-04 02:21:13,261 dispatcher.py:164] Starting server "default" running at: http://localhost:8080 INFO 2013-06-04 02:21:13,324 admin_server.py:117] Starting admin server at: http://localhost:8000 ERROR 2013-06-04 02:21:13,553 php_runtime.py:199] The PHP runtime is not available because: No input file specified.

Then when I go to localhost:8080 I get this: `The PHP interpreter specified with the --php_executable_path flag ("/cygdrive/c/Development/php/php-cgi.exe") is not compatible with the App Engine PHP development environment.

No input file specified.`

share|improve this question
A quick&dirty way is to temporarily modify safe_subprocess.py:61 to print the path or args before whatever call it's making. A cleaner way is to run it in the debugger and break at that line. – abarnert Jun 4 at 1:35
However, if you look a few levels up the stack chain, it seems pretty likely that it's php_executable_path. What did you specify in your yaml configs and/or --php_executable-path command line flags? Is it a Cygwin PHP interpreter, or a native Windows one? Can you run it from within a Cygwin shell? – abarnert Jun 4 at 1:40
@abarnert app.yaml is application: helloworld version: 1 runtime: php api_version: 1 - url: /.* script: helloworld.php – menting311 Jun 4 at 1:49
@abarnert my command is ` appengine-php-sdk-1.8.0/google_appengine/dev_appserver.py --php_executable_path=/cygdrive/c/Development/php/ /cygdrive/c/Development/PhpScripts/helloworld/` – menting311 Jun 4 at 1:53
1  
@menting311, try changing the php_executable_path to be the binary for php, not the directory. Something like --php_executable_path=/cygdrive/c/Development/php/bin/php, or wherever it is on your system. – kgraney Jun 4 at 1:56
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1 Answer

up vote 2 down vote

The problem is in your command line:

appengine-php-sdk-1.8.0/google_appengine/dev_appserver.py --php_executable_path=/cygdrive/c/Development/php/ /cygdrive/c/Development/PhpScripts/helloworld/

Your php_executable_path is not an executable, but a directory. So, GAE tries to run /cygdrive/c/Development/php/ as if it were a program, and gets an EACCES ("permission denied"), exactly as it should.

The fix is to pass /cygdrive/c/Development/php/php.exe (or whatever it's called) instead.

I believe your new problem is exactly what I mentioned in an early comment, and in the earlier version of this answer: You're mixing cygwin and native code in ways that don't work.

In particular, it looks like you're running a native Windows version of GAE in a cygwin Python interpreter, and then pointing it at a native Windows php-cgi interpreter. It's hard to guess exactly which one of these multiple mismatches is to blame, but it's quite likely that one of them is. So, either:

  • Use a native Windows Python, or
  • Use a cygwin/POSIX GAE and a cygwin PHP interpreter.
share|improve this answer
Can you suggest a native Windows Python command line environment? – menting311 Jun 4 at 2:57
@menting311: Yes. Go to python.org, and click the link to download the Python installer for Windows. The link from the GAE instructions would also work (since it points to the same page). – abarnert Jun 4 at 2:58
Or, even simpler… doesn't the Windows GAE SDK come with its own embedded Python interpreter, and a launcher that uses it, so as long as you don't go out of your way to explicitly run dev_appserver.py under a different Python? – abarnert Jun 4 at 3:01
If it does, Google doesn't explicitly say how to use it. Or if it did, I completely missed it. – menting311 Jun 4 at 3:10
Just to be clear...the php-cgi.exe php interpreter I am giving the command is the one from the Python 2.7 download right from the GAE tutorial. – menting311 Jun 4 at 3:13
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