Cannot install module - Undefined Function apdqc_query()

It appears that line 813 is this line: $result = apdqc_query(array('system'), array(), "SELECT * FROM " . apdqc_fast_prefix_tables('{' . apdqc_fast_escape_table('system') . "} WHERE name = 'system'") . " LIMIT 1", array('log' => FALSE));. The conditional above that says if (empty($requirements)) so that would lead me to believe that I have no requirements left to do.

The server doesn't have the mysqlnd extension just for starters.

I'm no longer getting that error I reported earlier.

The error I have now is:

$ drush en apdqc
Module apdqc doesn't meet the requirements to be enabled.                                                                                     
[error]  (Currently using APDQC - APDQCache Class not available Make sure the cache_backends array contains apdqc.cache.inc.)  

Is this the expected outcome when php-mysqlnd isn't installed?

One thing to note from #5:
I was able to install after I made the changes to settings.php

Now:
Downloaded the latest dev (e12bb2f) (switched to git)
Replaced database with backup before apqdc install
Went to install:

$ drush en apdqc
Parse error: syntax error, unexpected ')', expecting :: (T_PAAMAYIM_NEKUDOTAYIM) in WITHHELD/sites/all/modules/contrib/apdqc/apdqc.install on line 175
Drush command terminated abnormally due to an unrecoverable error.                                                    [error]
Error: syntax error, unexpected ')', expecting :: (T_PAAMAYIM_NEKUDOTAYIM) in
WITHHELD/sites/all/modules/contrib/apdqc/apdqc.install,
line 175

Down the rabbit hole we go. :)

I broke it out a little bit into this:

 if (
empty($mysqlnd) 
&&
defined('PHP_BINARY')
&&
!empty(PHP_BINARY)
) {

and the !empty(PHP_BINARY) is where the error is at.

Would it make more sense to use

get_loaded_extensions()

to see if mysqlnd is enabled?

That way it's going to return what is currently being used (in the event that it differs between cli / fpm et al.

I was just uploading a patch that I just wrote and was notified that you did it before I did. AHH

Here's the results on testing 1a49c45

$ drush en apdqc
Module apdqc doesn't meet the requirements to be enabled.                                                             [error]
 (Currently using APDQC - APDQCache Class not available Make sure the cache_backends array contains apdqc.cache.inc.) [error]

Would it be possible to list the requirements in the error or is that getting a little too helpful? :)
I see that there should be some requirements shown based on the code. :)

Just throwing this out there I guess there's also an

extension_loaded()

function.

if (extension_loaded('mysqlnd')) { 

mikeytown2,

I just grabbed the latest release from git (91788efe126fe84e7650de25fce14fc54c1c73f1) and the output is still this:

$ drush en apdqc
Module apdqc doesn't meet the requirements to be enabled.                                                             [error]
 (Currently using APDQC - APDQCache Class not available Make sure the cache_backends array contains apdqc.cache.inc.) [error]

I'm guessing that isn't the expected output according to what I'm seeing in the code.

No dice on the last commit.

The issue is at Line 130 where it is checking $phase if its value is 'runtime'. Shouldn't it be checking for 'install' or should the mysqlnd check be placed outside of this conditional?

Hopefully this helps with the debugging.

I'd say that the output looks good.

drush en apdqc
Module apdqc doesn't meet the requirements to be enabled.                                                                                                                [error]
You need to install the mysqlnd driver on this system. Run sudo apt-get install php5-mysqlnd. You might need to add the extension to your php.ini file as well           [error]
extension=mysqlnd.so; should be located here: /etc/php5/cli/php.ini

Cheers!