php - 在 php 中显示进程的输出

Question

header("Content-type: text/plain");

// tell php to automatically flush after every output
// including lines of output produced by shell commands
disable_ob();

$command = 'sudo rsync -arz --progress /home/lokesh/Desktop /home/lokesh/Downloads --stats';
system($command);

function disable_ob() {
    // Turn off output buffering
    ini_set('output_buffering', 'off');
    // Turn off PHP output compression
    ini_set('zlib.output_compression', false);
    // Implicitly flush the buffer(s)
    //ini_set('implicit_flush', true);
    ob_implicit_flush(true);
    // Clear, and turn off output buffering
    while (ob_get_level() > 0) {
        // Get the curent level
        $level = ob_get_level();
        // End the buffering
        ob_end_clean();        
        // If the current level has not changed, abort
        if (ob_get_level() == $level) break;
    }
    // Disable apache output buffering/compression
    if (function_exists('apache_setenv')) {
        apache_setenv('no-gzip', '1');
        apache_setenv('dont-vary', '1');
    }
}

上面我的代码给出了这样的输出。

输出

桌面/桌面/CloudRDP.bat

        336 100%    0.00kB/s    0:00:00  
        336 100%    0.00kB/s    0:00:00 (xfr#1, ir-chk=1055/1057)

Desktop/Days of the Week Song - 7 Days of the Week - The Learning Station 的 child 歌曲.mp4

     32,768   0%  888.89kB/s    0:00:22  
  5,308,416  27%    5.06MB/s    0:00:02  
  5,636,096  28%    2.41MB/s    0:00:05  
 10,846,208  55%    3.20MB/s    0:00:02  
 15,826,944  80%    3.56MB/s    0:00:01  
 19,611,127 100%    3.75MB/s    0:00:04 (xfr#2, ir-chk=1054/1057)

Desktop/EnjayEsync Ver 2.4.1.rar

     32,768   1%   42.61kB/s    0:00:49  
  1,277,952  59%    1.22MB/s    0:00:00  
  2,135,855 100%    1.73MB/s    0:00:01 (xfr#3, ir-chk=1053/1057)

桌面/EnjayOnlineProductRegistration.sql

     32,768  13%  181.82kB/s    0:00:01  
    235,670 100%    1.05MB/s    0:00:00 (xfr#4, ir-chk=1052/1057)

但我想通过搜索“xfr#”字符串来计算文件传输的数量。这怎么可能。我试过循环但无法做到这一点。表示在获取此字符串 (xfr#4) 后显示输出 4。

Answer 1

如果您不仅需要命令输出的最后一行，那么用 system — Execute an external program and display the output — 代替使用 popen — Opens process file pointer — (逐行阅读)或 exec — Execute an external program (获取一个数组，其中填充了每一行输出)。