Process (Component)

Symfony\Component\Process

ExecutableFinder	Generic executable finder.
PhpExecutableFinder	An executable finder specifically designed for the PHP executable.
PhpProcess	PhpProcess runs a PHP script in an independent process.
Process	Process is a thin wrapper around proc_* functions to ease start independent PHP processes.
ProcessBuilder	Process builder.
ProcessPipes	ProcessPipes manages descriptors and pipes for the use of proc_open.
ProcessUtils	ProcessUtils is a bunch of utility methods.