[英]Sub process output not being returned 'real-time'
I'm just testing out the Symfony Process Component and it doesn't seem to do what it says on the tin. 我只是在测试Symfony Process Component,它似乎并没有按照锡说的做。
Docs state 文件状态
When executing a long running command (like rsync-ing files to a remote server), you can give feedback to the end user in real-time by passing an anonymous function to the run() method:
当执行长时间运行的命令(例如将文件同步到远程服务器)时,可以通过将匿名函数传递给run()方法来实时向最终用户提供反馈:
I have 1 file with the following 我有以下文件1
$process = new Process('php terminal.php');
$process->setTimeout(null);
$process->run( function ( $type, $buffer ) {
if (Process::ERR === $type) {
echo 'ERR > '.$buffer;
} else {
echo 'OUT > '.$buffer;
}
});
and another with the following 另一个与以下
$x = 10;
while( $x ) {
echo "{$x}\n";
sleep(1);
$x--;
}
While running this via terminal after a 10 second wait the output is 在等待10秒钟后通过端子运行此命令时,输出为
OUT > 10
OUT > 9
OUT > 8
OUT > 7
OUT > 6
OUT > 5
OUT > 4
OUT > 3
OUT > 2
OUT > 1
which shows there are 10 iterations of closure above but there is no output until the process is finished. 这表明上面有10次闭包迭代,但是在过程完成之前没有输出。
Am I missing something here? 我在这里想念什么吗?
Regards, Luke 问候,路加福音
You need to use : 您需要使用:
flush();
ob_flush();
On your first code : 在您的第一个代码上:
$process = new Process('php terminal.php');
$process->setTimeout(null);
$process->run( function ( $type, $buffer ) {
if (Process::ERR === $type) {
echo 'ERR > '.$buffer;
} else {
echo 'OUT > '.$buffer;
}
flush();
ob_flush();
});
On the 2nd : 在第二天:
$x = 10;
while( $x ) {
echo "{$x}\n";
flush();
ob_flush();
sleep(1);
$x--;
}
More information at php.net : ob_flush and flush 在php.net上的更多信息: ob_flush和flush
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