/**
* 创建所需的 proc_open 的描述符
* @return array
*/
private function getDescriptors()
{
if ('\\' === DS) {
$this->processPipes = WindowsPipes::create($this, $this->input);
} else {
$this->processPipes = UnixPipes::create($this, $this->input);
}
$descriptors = $this->processPipes->getDescriptors($this->outputDisabled);
if (!$this->useFileHandles && $this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
$descriptors = array_merge($descriptors, [['pipe', 'w']]);
$this->commandline = '(' . $this->commandline . ') 3>/dev/null; code=$?; echo $code >&3; exit $code';
}
return $descriptors;
}
