PHP-FPM and Pcntl_fork shared issues

Using Pcntl_fork to create a subprocess in PHP-FPM connection mode, the simplest piece of code is as follows:

 
Output 6 '-' in CLI mode, but only 2 '-' in PHP-FPM connection mode, that is, only the results of the main process or a child process can be output when the PHP-FPM is connected. How can I get all the output under the PHP-FPM, or where is the output of php-fpm under PHP? Has anyone ever met this problem?
                                                    
                                                                                                                                             
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Using Pcntl_fork to create a subprocess in PHP-FPM connection mode, the simplest piece of code is as follows:
!--? phpfor ($i = 0; $i 2; $i + +) {pcntl_fork (); Print_r ('-');}  The 
 Outputs 6 '-' in CLI mode, but only 2 '-' is output in PHP-FPM connection mode, which means that only the results of the main process or a child process can be output when the PHP-FPM is connected. How can I get all the output under the PHP-FPM, or where is the output of php-fpm under PHP? Has anyone ever met this problem?                                    
 
 
 
 has not encountered it. I use the apt-get installed under Ubuntu php-fpm default is to disable the Pcntl module, also put these functions are written in the disabled_functions inside. The 
 
 PHP-FPM itself has a management process that should not have used this function, otherwise the behavior would be uncertain, for example, the management process might kill too many processes.                                    
 
 
 
 Pcntl_fork is only under the CLI, PHP-FPM does not support, to do so, you can php-fpm down the system method or Popen method to execute a CLI program 
 
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