ProcessBuilder add(string $argument)

string getOutput() Returns the current output of the process (STDOUT).

string getIncrementalErrorOutput() Returns the errorOutput incrementally. In comparison

bool isTerminated() Checks if the process is terminated.

Process setWorkingDirectory(string $cwd)

array getOptions() Gets the options for proc_open.

array getDescriptors() Returns an array of descriptors for the use of proc_open.

addErrorOutput(string $line) Adds a line to the STDERR stream.

class ProcessPipes ProcessPipes manages descriptors and pipes for the use of proc_open.

null|int getExitCode() Returns the exit code returned by the process.