src/AssetProcess.php
public function run($input = null)
    {
        $descriptorSpec = array(
            0 => array('pipe', 'r'),
            1 => array('pipe', 'w'),
            2 => array('pipe', 'w')
        );
        $process = proc_open(
            $this->_command,
            $descriptorSpec,
            $pipes,
            null,
            $this->_env
        );
        if (is_resource($process)) {
            fwrite($pipes[0], $input);
            fclose($pipes[0]);

            $this->_output = stream_get_contents($pipes[1]);
            fclose($pipes[1]);

            $this->_error = stream_get_contents($pipes[2]);
            fclose($pipes[2]);
            proc_close($process);
        }
        return $this->_output;
    }
public function run($input = null)
    {
        $descriptorSpec = array(
            0 => array('pipe', 'r'),
            1 => array('pipe', 'w'),
            2 => array('pipe', 'w')
        );
        $process = proc_open(
            $this->_command,
            $descriptorSpec,
            $pipes,
            null,
            $this->_env
        );
        if (is_resource($process)) {
            fwrite($pipes[0], $input);
            fclose($pipes[0]);

            $this->_output = stream_get_contents($pipes[1]);
            fclose($pipes[1]);

            $this->_error = stream_get_contents($pipes[2]);
            fclose($pipes[2]);
            proc_close($process);
        }
        return $this->_output;
    }
public function run ( $ input = null ) { $ descriptorSpec = array ( 0 => array ( 'pipe' , 'r' ) , 1 => array ( 'pipe' , 'w' ) , 2 => array ( 'pipe' , 'w' ) ) ; $ process = proc_open ( $ this -> _command , $ descriptorSpec , $ pipes , null , $ this -> _env ) ; if ( is_resource ( $ process ) ) { fwrite ( $ pipes [ 0 ] , $ input ) ; fclose ( $ pipes [ 0 ] ) ; $ this -> _output = stream_get_contents ( $ pipes [ 1 ] ) ; fclose ( $ pipes [ 1 ] ) ; $ this -> _error = stream_get_contents ( $ pipes [ 2 ] ) ; fclose ( $ pipes [ 2 ] ) ; proc_close ( $ process ) ; } return $ this -> _output ; }
Run the command and capture the output as the return.

@param string $input STDIN for the command.
@param string Output from the command.
Run the command and capture the output as the return .