环境不会传递给proc_open打开的进程

时间:2013-11-29 15:17:28

标签: php process proc-open

我在将环境变量传递给使用proc_open打开的进程时遇到问题。 我在http://us2.php.net/manual/en/function.proc-open.php

上找到了以下示例
<?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_value\n";
}
?>

示例应该像文档说的那样回显env数组。但是在我的机器上(PHP 5.4.6-1ubuntu1.4(cli)),回显的数组是空的。是否有一些禁止env var传递给进程的Suhosin或php.ini限制?我不知道。

2 个答案:

答案 0 :(得分:1)

如果$_ENV为空,您应该查看variables_order ini设置,并确保该值包含E

但是,您可以改为使用$_SERVER

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

它也将包含环境变量,应该在99.999%个服务器上启用(我猜)

答案 1 :(得分:1)

variables_order = "EGPCS"

在你的php.ini