(PHP 4, PHP 5, PHP 7)

posix_getppidReturn the parent process identifier


int posix_getppid ( void )

Return the process identifier of the parent process of the current process.

Return Values

Returns the identifier, as an integer.


Example #1 Example use of posix_getppid()

echo posix_getppid(); //8259

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divinity76 at gmail dot com
1 day ago
WARNING, when using proc_open, your child will NOT get the parent php process's PID by using posix_getppid() , it will actually get the pid of a shell ( /bin/sh ? ) started by php, which in turn starts the child.  i don't currently have a good workaround for this, but i'm working around it by having the parent write it's pid to a file and having the chidren read the file
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