Call to undefined function cache_get() in includes/module.inc

[sam452]

On a debian 8 install with drupal 7, php 5.6.x I followed these instructions to use drush 8.1.2.

https://www.linode.com/docs/websites/cms/drush-drupal

I attempted to dl and en the memory_profiler
drush dl memory_profiler -y && drush en memory_profiler -y

And a stacktrace indicates Call to undefined function cache_get() in includes/module.inc

I checked google and this string. There appears to be something related that was fixed earlier this year so i probably have missed something up.

This is the result of drush --debug
Using the Drush script found at /usr/local/src/drush/drush.launcher using pcntl_exec
Cache HIT cid: 8.1.2-commandfiles-0-754b9123fafca1e9f1028ecceb8064d3 [debug]
[0.01 sec, 2.34 MB]
Bootstrap to phase 0. [0.17 sec, 5.53 MB] [bootstrap]
Trying to bootstrap as far as we can. [0.18 sec, 5.53 MB] [debug]
Drush bootstrap phase : bootstrap_drupal_root() [0.18 sec, 5.87 MB] [bootstrap]
Initialized Drupal 7.43 root directory at [bootstrap]
/home/myuser/example.org [0.18 sec, 5.87 MB]
Find command files for phase 1 (max=7) [0.18 sec, 4.76 MB] [debug]
Cache HIT cid: 8.1.2-commandfiles-1-a31511f7cd486d27ea263faa7e8234b4 [debug]
[0.18 sec, 4.76 MB]
Drush bootstrap phase : bootstrap_drupal_site() [0.21 sec, 4.77 MB] [bootstrap]
Initialized Drupal site default at sites/default [0.21 sec, 4.77 MB] [bootstrap]
Find command files for phase 2 (max=7) [0.21 sec, 4.77 MB] [debug]
Drush bootstrap phase : bootstrap_drupal_configuration() [0.21 sec, [bootstrap]
4.77 MB]
Find command files for phase 3 (max=7) [0.21 sec, 4.78 MB] [debug]
PHP Fatal error: Uncaught Error: Call to undefined function cache_get() in /home/myuser/example.org/includes/module.inc:750
Stack trace:
#0 /home/myuser/example.org/includes/module.inc(948): module_implements('system_theme_in...')
#1 /home/myuser/example.org/modules/system/system.module(2511): module_invoke_all('system_theme_in...')
#2 /home/myuser/example.org/includes/theme.inc(798): _system_rebuild_theme_data()
#3 /home/myuser/example.org/includes/theme.maintenance.inc(57): list_themes()
#4 /home/myuser/example.org/includes/bootstrap.inc(2600): _drupal_maintenance_theme()
#5 /home/myuser/example.org/includes/errors.inc(179): drupal_maintenance_theme()
#6 /home/myuser/example.org/includes/bootstrap.inc(2337): _drupal_log_error(Array, true)
#7 [internal function]: _drupal_exception_handler(Object(Error))
#8 {main}

thrown in /home/myuser/example.org/includes/module.inc on line 750
Drush command terminated abnormally due to an unrecoverable error. [error]
Error: Uncaught Error: Call to undefined function cache_get() in
/home/myuser/example.org/includes/module.inc:750
Stack trace:
#0

/home/myuser/example.org/includes/module.inc(948):
module_implements('system_theme_in...')
#1

/home/myuser/example.org/modules/system/system.module(2511):
module_invoke_all('system_theme_in...')
#2

/home/myuser/example.org/includes/theme.inc(798):
_system_rebuild_theme_data()
#3

/home/myuser/example.org/includes/theme.maintenance.inc(57):
list_themes()
#4

/home/myuser/example.org/includes/bootstrap.inc(2600):
_drupal_maintenance_theme()
#5

/home/myuser/example.org/includes/errors.inc(179):
drupal_maintenance_theme()
#6

/home/myuser/example.org/includes/bootstrap.inc(2337):
_drupal_log_error(Array, true)
#7 [internal function]: _drupal_exception_handler(Object(Error))
#8 {main}

thrown in
/home/myuser/example.org/includes/module.inc, line
750 [0.3 sec, 7.4 MB]

[weitzman]

Not likely a drush issue.

[greggles]

For what it's worth, I ran into this issue when settings.php had a typo in it and php couldn't parse it.

Some good next steps in general when drush fails this hard:

• Use the --debug option of drush to see further where it's failing
• Find and read your php error log

[kenorb]

Related: PHP Fatal error: Uncaught Error: Call to undefined function cache_get().

[Oli-Chowdhury]

You can also run this command to do a quick syntax test.

In sites/default run this:

find . -name "*.php" -exec php -l {} ;

[dustinsilva]

Should be find . -name "*.php" -exec php -l {} \;

[Namone]

If anyone else hits this, I have found when trying to use Composer in a Drupal 7 project that you need to make sure you're running the correct PHP version (7.1+).