问题
I have installed pcntl on my PHP 5.4.6 running on Ubuntu 32-bit 12.10, using this article.
It didn't go smoothly at all because after compiling, when running make test I got the following errors. I am getting a warning each time that I'm trying to fork a child process which says:
Warning: pcntl_fork() has been disabled for security reasons in /var/www/mydev/dev/mailServiceTest.php on line 8
I've searched all over the web for a solution, but unfortunately I didn't find any mentioning of this problem anywhere else.
Build complete.
Don't forget to run 'make test'.
PHP Warning: Module 'pcntl' already loaded in Unknown on line 0
PHP Warning: Module 'pcntl' already loaded in Unknown on line 0
=====================================================================
PHP : /usr/bin/php
Warning: Module 'pcntl' already loaded in Unknown on line 0
PHP_SAPI : cli
PHP_VERSION : 5.4.6-1ubuntu1.2
ZEND_VERSION: 2.4.0
PHP_OS : Linux - Linux oleg-Lenovo-G580 3.5.0-26-generic #42-Ubuntu SMP Fri Mar 8 23:20:06 UTC 2013 i686
INI actual : /php/php-5.4.6/ext/pcntl/tmp-php.ini
More .INIs :
CWD : /php/php-5.4.6/ext/pcntl
Extra dirs :
VALGRIND : Not used
=====================================================================
TIME START 2013-04-28 12:11:03
=====================================================================
FAIL Test pcntl wait functionality [tests/001.phpt]
FAIL pcntl: pcntl_sigprocmask(), pcntl_sigwaitinfo(), pcntl_sigtimedwait() [tests/002.phpt]
FAIL pcntl: SIG_BLOCK, SIG_UNBLOCK, SIG_SETMASK [tests/003.phpt]
FAIL Bug #47566 (return value of pcntl_wexitstatus()) [tests/bug47566.phpt]
FAIL pcntl_alarm() [tests/pcntl_alarm.phpt]
FAIL pcntl_exec() [tests/pcntl_exec.phpt]
FAIL pcntl_exec() 2 [tests/pcntl_exec_2.phpt]
FAIL pcntl_exec() 3 [tests/pcntl_exec_3.phpt]
FAIL Test function pcntl_fork() by calling it with its expected arguments [tests/pcntl_fork_basic.phpt]
FAIL Test function pcntl_fork() by testing the process isolation in the forking hierarchy father -> son -> grandson where father can not knows his grandson [tests/pcntl_fork_variation.phpt]
FAIL Test pcntl_get_last_error() [tests/pcntl_get_last_error.phpt]
FAIL pcntl_signal() [tests/pcntl_signal.phpt]
FAIL pcnt_signal_dispatch() [tests/pcntl_signal_dispatch.phpt]
FAIL pcntl_wait() [tests/pcntl_wait.phpt]
FAIL Closures as a signal handler [tests/signal_closure_handler.phpt]
=====================================================================
TIME END 2013-04-28 12:11:07
=====================================================================
TEST RESULT SUMMARY
---------------------------------------------------------------------
Exts skipped : 0
Exts tested : 44
---------------------------------------------------------------------
Number of tests : 15 15
Tests skipped : 0 ( 0.0%) --------
Tests warned : 0 ( 0.0%) ( 0.0%)
Tests failed : 15 (100.0%) (100.0%)
Expected fail : 0 ( 0.0%) ( 0.0%)
Tests passed : 0 ( 0.0%) ( 0.0%)
---------------------------------------------------------------------
Time taken : 4 seconds
=====================================================================
=====================================================================
FAILED TEST SUMMARY
---------------------------------------------------------------------
Test pcntl wait functionality [tests/001.phpt]
pcntl: pcntl_sigprocmask(), pcntl_sigwaitinfo(), pcntl_sigtimedwait() [tests/002.phpt]
pcntl: SIG_BLOCK, SIG_UNBLOCK, SIG_SETMASK [tests/003.phpt]
Bug #47566 (return value of pcntl_wexitstatus()) [tests/bug47566.phpt]
pcntl_alarm() [tests/pcntl_alarm.phpt]
pcntl_exec() [tests/pcntl_exec.phpt]
pcntl_exec() 2 [tests/pcntl_exec_2.phpt]
pcntl_exec() 3 [tests/pcntl_exec_3.phpt]
Test function pcntl_fork() by calling it with its expected arguments [tests/pcntl_fork_basic.phpt]
Test function pcntl_fork() by testing the process isolation in the forking hierarchy father -> son -> grandson where father can not knows his grandson [tests/pcntl_fork_variation.phpt]
Test pcntl_get_last_error() [tests/pcntl_get_last_error.phpt]
pcntl_signal() [tests/pcntl_signal.phpt]
pcnt_signal_dispatch() [tests/pcntl_signal_dispatch.phpt]
pcntl_wait() [tests/pcntl_wait.phpt]
Closures as a signal handler [tests/signal_closure_handler.phpt]
=====================================================================
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oleg@oleg-Lenovo-G580:/php/php-5.4.6/ext/pcntl$ version
When typing the following command, it seems that PHP is indeed already installed, although the PHP interpreter didn't recognize the function before I installed this extension at all:
oleg@oleg-Lenovo-G580:/php/php-5.4.6/ext/pcntl$ php -m | grep pcntl
PHP Warning: Module 'pcntl' already loaded in Unknown on line 0
pcntl
How can I configure this feature to work properly?
回答1:
sudo gedit
sudo gedit /etc/php5/cli/php.ini
or \ and
sudo gedit /etc/php5/apache2/php.ini
find:
disable_functions = pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl
Comment this out:
;disable_functions = pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl
回答2:
I too had this problem. Ubuntu ships with some sample PHP configuration files in /usr/share/php5: php.ini-production is the template for the Apache web server PHP config (/etc/php5/apache2/php.ini) and it disables pcntl_fork and other functions. php.ini-production.cli is the template for PHP run from the command line (/etc/php5/cli/php.ini) including when you're running tests, and it doesn't disable any functions. But somehow my /etc/php5/cli/php.ini was a copy of the Apache config which disables these functions.
I'm not sure how this happened. I installed my LAMP stack with Ubuntu 12.04. My /etc/php5/cli/php.ini file dated from October 2013, suggesting Ubuntu 13.10 set it up; maybe that release copied the wrong file. Ubuntu upgrades update the sample files in /usr/share/php5 but leave the files in /etc/ alone.
To fix it I used
$ sudo cp -pi /usr/share/php5/php.ini-production.cli /etc/php5/cli/php.ini
to copy the default command-line settings file. Obviously if you've made changes to the command-line PHP5 settings, this will overwrite them; use your UNIX skills to diff and merge them.
来源：https://stackoverflow.com/questions/16262854/pcntl-not-working-on-ubuntu-for-security-reasons