PHP how to install PCNTL on Linux

The Process Control (PCNTL) extension for PHP provides process management functionality, allowing you to handle signals, fork processes, and manage child processes in your PHP applications.

$ make install

mkdir /opt/php
cd /opt/php*/ext/pcntl
$ phpize
$ ./configure --prefix=/usr
$ make</code></pre>

Add extension=pcntl.so to /etc/php5/cgi/php.ini

Security Considerations

Note that PCNTL should typically only be used in CLI applications, as enabling process control in web applications can pose security risks. Many shared hosting providers disable PCNTL for this reason.