强大的php函数shell_exec

一个实现杀死服务器所有进程的类！

<?php

/**
* PHP Kill Process
*
* Sometimes, it can happen a script keeps running when it shouldn't, and it
* won't stop after we close the browser, or shutdown the computer. Because it's
* not always easy to use SSH there's a workaround.
*
* @author      Jensen Somers <[e-mail]>
* @version     1.0
*/

class KillAllProcesses {
    /**
     * Construct the class
     */
    function killallprocesses() {
        $this->listItems();
    }
   
    /**
     * List all the items
     */
    function listItems() {
        /*
         * PS   Unix command to report process status
         * -x   Select processes without controlling ttys
         *
         * Output will look like:
         *      16479 pts/13   S      0:00 -bash
         *      21944 pts/13   R      0:00 ps -x
         *
         */
        $output =   shell_exec('ps -x');
       
        $this->output($output);
       
        // Put each individual line into an array
        $array  =   explode("\n",$output);
       
        $this->doKill($array);
    }
   
    /**
     * Print the process list
     * @param   string  $output
     */
    function output($output) {
        print   "<pre>".$output."</pre>";
    }
   
    /**
     * Kill all the processes
     * It should be possible to filter in this, but I won't do it now.
     * @param   array   $array
     */
    function doKill($array) {
        /*
         * Because the first line of our $output will look like
         *        PID TTY      STAT   TIME COMMAND
         * we'll skip this one.
         */
        for ($i = 1;$i < count($array);$i++) {
            $id =   substr($array[$i],0, strpos($array[$i],' ?'));
            shell_exec('kill '.$id);
        }
    }
}

new KillAllProcesses();

?>