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Getting the process identifier

Retrieve the current Process Identifier: getmypid()

Any active process is identified by operating system by a Process IDentifier (PID). This number may be used to kill or manage the process. In the shell, to retrieve the list of processes with the PID, you can use the ps command.

In a PHP script you can retrieve the current process identifier with getmypid().

It returns an integer of the identifier or false if an error occours.

$myPid = getmypid(); // for example 19740
echo "If you want to kill me, execute: kill -9 " . $myPid;