drupal_static() is not equivalent to PHP static. The example you've given is using PHP static and yes, it will not be available in another function.
http://api.drupal.org/api/drupal/includes%21bootstrap.inc/function/drupal_static/7 On Mon, Jan 21, 2013 at 11:21 AM, Lluís Forns <enb...@gmail.com> wrote: > I know we are going OT, but I also want to understand this; > > what about: > > > function mymodule_complex_calculation() { > static $cache; > if (isset($cache)) { > return $cache; > } > // Otherwise we need to perform our calculations > // ...some complex calculation that returns > $cache = complex_calculation(); > return $cache; > } > > > http://techblog.zabuchy.net/2011/enhancing-drupal-performance-with-drupal_static/ > > You are saying that if I instantiate a variable in "mymodule_impersonate()" > it will not be available in "mymodule_unimpersonate()"? > > > 2013/1/21 Earnie Boyd <ear...@users.sourceforge.net> >> >> You "think" wrongly. A static variable has local scope to the >> function declaring the static variable. >> >> On Mon, Jan 21, 2013 at 11:03 AM, Lluís Forns <enb...@gmail.com> wrote: >> > I think static are also available to other functions, use them to store >> > cached information across my code and they work. >> > >> > >> > 2013/1/21 Darren Oh <darre...@sidepotsinternational.com> >> >> >> >> Static variables are only saved for a single function. Global variables >> >> are available to all functions during a single page request. Session >> >> variables are available to all page requests during a session. >> >> >> >> On Jan 21, 2013, at 10:08 AM, Lluís Forns wrote: >> >> >> >> Darren, thanks for the link. What is the difference between using >> >> global >> >> or static to save the data? >> >> >> >> >> >> >> >> 2013/1/21 Lluís Forns <enb...@gmail.com> >> >>> >> >>> My code was from a module where impersonation recursively could >> >>> happen, >> >>> this is why I use a stack to save user state. I am also saving it to >> >>> session >> >>> and not using a static variable because I may uses batch functions. >> >>> >> >>> But I see some problems right now: >> >>> - To be safe impersonation should be saved into static variables (and >> >>> "using session_save_session(FALSE);" ), so if anything goes wrong, >> >>> $user is >> >>> not afected. >> >>> - If I want to be able to execute every Rules action in a batch, I >> >>> need >> >>> to change user "per action" >> >>> >> >>> Any idea of how to "inject" code before and after a rule action? >> >>> >> >>> >> >>> 2013/1/21 Walt Daniels <wdli...@gmail.com> >> >>>> >> >>>> We do the latter simple trick in our store code so we can show people >> >>>> the member prices. We have a dummy id that is a member so we switch >> >>>> to it, >> >>>> pick up the price and use it so we can show both member and >> >>>> non-member >> >>>> prices on the screen. >> >>>> >> >>>> >> >>>> On Mon, Jan 21, 2013 at 9:18 AM, Christian López Espínola >> >>>> <penyask...@computer.org> wrote: >> >>>>> >> >>>>> Haven't tested your code, but maybe you want to take a look at >> >>>>> masquerade_switch_user and masquerade_switch_back: >> >>>>> >> >>>>> http://drupalcode.org/project/masquerade.git/blob/HEAD:/masquerade.module. >> >>>>> >> >>>>> And if the impersonation is only for the given request, maybe just >> >>>>> >> >>>>> global $user; >> >>>>> $previous = $user; >> >>>>> $user = user_load($uid); >> >>>>> // Do your stuff. >> >>>>> $user = $previous; >> >>>>> >> >>>>> would work. >> >>>>> >> >>>>> >> >>>>> >> >>>>> On Mon, Jan 21, 2013 at 10:37 AM, Lluís Forns <enb...@gmail.com> >> >>>>> wrote: >> >>>>>> >> >>>>>> Some of my scheduled task needs to run as the user who triggered >> >>>>>> them >> >>>>>> (not anonymous neither admin); so I thought of writing two actions: >> >>>>>> - One to impersonate a user, which will receive uid as an argument. >> >>>>>> - Another to undo the impersonate. >> >>>>>> All the called actions should be between them. >> >>>>>> >> >>>>>> Anybody see any fault in this idea or the actions code? >> >>>>>> >> >>>>>> Thanks. >> >>>>>> >> >>>>>> function wu_action_impersonate($uid) { >> >>>>>> global $user; >> >>>>>> if (!array_key_exists('wu_action_impersonate', $_SESSION)) { >> >>>>>> $_SESSION['wu_action_impersonate'] = array(); >> >>>>>> } >> >>>>>> array_push($_SESSION['wu_action_impersonate'], $user); >> >>>>>> session_save_session(FALSE); >> >>>>>> $user = user_load($uid); >> >>>>>> user_load($uid); >> >>>>>> } >> >>>>>> >> >>>>>> function wu_action_unimpersonate() { >> >>>>>> global $user; >> >>>>>> if (array_key_exists('wu_action_impersonate', $_SESSION)) { >> >>>>>> if (!empty($_SESSION['wu_action_impersonate'])) { >> >>>>>> $user = array_pop($_SESSION['wu_action_impersonate']); >> >>>>>> } >> >>>>>> if (empty($_SESSION['wu_action_impersonate'])) { >> >>>>>> unset($_SESSION['wu_action_impersonate']); >> >>>>>> } >> >>>>>> } >> >>>>>> session_save_session(TRUE); >> >>>>>> } >> >>>>>> >> >>>>>> -- >> >>>>>> *Ser freak no és imprescindible per ser informàtic, però ajuda. >> >>>>>> *La vida no ha de ser feliç, ha de ser plena. >> >>>>>> *Abans d'imprimir aquest missatge, pensa en el medi ambient. >> >>>>> >> >>>>> >> >>>>> >> >>>>> >> >>>>> -- >> >>>>> Cheers, >> >>>>> >> >>>>> Christian López Espínola <penyaskito AT computer DOT org> >> >>>>> http://twitter.com/penyaskito | http://penyaskito.com >> >>>> >> >>>> >> >>> >> >>> >> >>> >> >>> -- >> >>> *Ser freak no és imprescindible per ser informàtic, però ajuda. >> >>> *La vida no ha de ser feliç, ha de ser plena. >> >>> *Abans d'imprimir aquest missatge, pensa en el medi ambient. >> >> >> >> >> >> >> >> >> >> -- >> >> *Ser freak no és imprescindible per ser informàtic, però ajuda. >> >> *La vida no ha de ser feliç, ha de ser plena. >> >> *Abans d'imprimir aquest missatge, pensa en el medi ambient. >> >> >> >> >> > >> > >> > >> > -- >> > *Ser freak no és imprescindible per ser informàtic, però ajuda. >> > *La vida no ha de ser feliç, ha de ser plena. >> > *Abans d'imprimir aquest missatge, pensa en el medi ambient. >> >> >> >> -- >> Earnie >> -- https://sites.google.com/site/earnieboyd > > > > > -- > *Ser freak no és imprescindible per ser informàtic, però ajuda. > *La vida no ha de ser feliç, ha de ser plena. > *Abans d'imprimir aquest missatge, pensa en el medi ambient. -- Earnie -- https://sites.google.com/site/earnieboyd
