任何等价于PHP中的子进程?

在Java和Python中,您可以使用ProcessBuilder或子流程模块,使您可以使用非转义字符串轻松启动流程,例如["ls", "some unescaped directory name"] - 它们还为您提供了强大的工具,如访问从stdout,stderr 。 是否有任何PHP的等价功能比只有exec()更智能和有用?


使用双向通信访问stdinstdoutstderr的最接近的等价物是proc_open()

以下是文档中的示例:

<?php
$descriptorspec = array(
   0 => array("pipe", "r"),  // stdin is a pipe that the child will read from
   1 => array("pipe", "w"),  // stdout is a pipe that the child will write to
   2 => array("file", "/tmp/error-output.txt", "a") // stderr is a file to write to
);

$cwd = '/tmp';
$env = array('some_option' => 'aeiou');

$process = proc_open('php', $descriptorspec, $pipes, $cwd, $env);

if (is_resource($process)) {
    // $pipes now looks like this:
    // 0 => writeable handle connected to child stdin
    // 1 => readable handle connected to child stdout
    // Any error output will be appended to /tmp/error-output.txt

    fwrite($pipes[0], '<?php print_r($_ENV); ?>');
    fclose($pipes[0]);

    echo stream_get_contents($pipes[1]);
    fclose($pipes[1]);

    // It is important that you close any pipes before calling
    // proc_close in order to avoid a deadlock
    $return_value = proc_close($process);

    echo "command returned $return_valuen";
}
?>

如果你只需要stdoutstdin ,你可以使用popen()

这是我修改后的例子,因为手册很糟糕:

<?php
$handle = popen('/path/to/executable', 'r');

$lines = [];
while (!feof($handle))
{
    $lines[] = fgets($handle);
}

pclose($handle);

这会将/path/to/executable的输出读入一行输出行。

您还询问了有关逃避论点。 你可以用escapeshellarg()来做到这escapeshellarg()

$escapedArg = escapeshellarg($arg);
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