php 查看服务器进程

<?php
exec('ps aux', $output);
foreach ($output as $line) {
    echo $line . "\n";
}
?>

<?php
$output = shell_exec('ps aux');
echo "<pre>$output</pre>";
?>

<?php
$descriptorspec = array(
   0 => array("pipe", "r"),  // 标准输入，子进程从此管道中读取数据
   1 => array("pipe", "w"),  // 标准输出，子进程向此管道中写入数据
   2 => array("pipe", "w")   // 标准错误
);

$process = proc_open('ps aux', $descriptorspec, $pipes);

if (is_resource($process)) {
    fclose($pipes[0]); // 不需要向 ps 命令传递任何输入

    $output = stream_get_contents($pipes[1]);
    fclose($pipes[1]);

    $errors = stream_get_contents($pipes[2]);
    fclose($pipes[2]);

    $return_value = proc_close($process);

    echo "Output:\n<pre>$output</pre>";
    if ($errors) {
        echo "Errors:\n<pre>$errors</pre>";
    }
}
?>