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问无法运行从php到linux的命令
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Stack Overflow用户

提问于 2021-02-23 09:58:30

回答 1查看 96关注 0票数 0

我试图从PHP运行一个命令到我的Linux服务器，但是有一个命令遇到了一些问题:这是脚本：

<?php
  $output=null;
  $retval=null;
  exec('speedtest -L -f, --format=json 2>&1', $output, $retval);
  echo "Returned with status $retval and output:\n";
  print_r($output);
?>

产出如下：

Returned with status 134 and output: 
       Array ( [0] => terminate called after throwing an instance of 'std::logic_error' 
               [1] => what(): basic_string::_M_construct null not valid 
               [2] => Aborted (core dumped))

运行脚本的用户是: www-data，如果我试图直接在终端上运行它，它就能工作。

command from terminal: sudo -u www-data speedtest -L
output: {"type":"serverList","timestamp":"2021-02-23T09:20:51Z","servers":[{"id":4302,"name":"Vodafone IT","location":"Milan","country":"Italy","host":"speedtest.vodafone.it","port":8080},{"id":7839,"name":"Fastweb SpA","location":"Milan","country":"Italy","host":"spd-pub-mi-01-01.fastwebnet.it","port":8080},{"id":11427,"name":"EOLO","location":"Milan","country":"Italy","host":"test.eolo.it","port":8080},{"id":1434,"name":"CWNET","location":"Milan","country":"Italy","host":"speedtest.cheapnet.it","port":8080},{"id":3667,"name":"TIM SpA","location":"Milan","country":"Italy","host":"speedtestmi1.telecomitalia.it","port":8080},{"id":8211,"name":"CDLAN S.R.L.","location":"Milan","country":"Italy","host":"speedtest.cdlan.it","port":8080},{"id":11675,"name":"Italiaonline Supernap","location":"Milan","country":"Italy","host":"speedtest-supernap.italiaonline.it","port":8080},{"id":20551,"name":"Optima Italia","location":"Milan","country":"Italy","host":"mi-speedtest.optimaitalia.com","port":8080},{"id":26415,"name":"P-Lab","location":"Milan","country":"Italy","host":"speed.speedymilan.net","port":8080},{"id":19177,"name":"Seeweb","location":"Milan","country":"Italy","host":"ookla-mil.seeweb.it","port":8080}]}

如果我运行另一个命令，它将完美地工作：

<?php
  $output=null;
  $retval=null;
  exec('whoami', $output, $retval);
  sleep(1);
  echo "Returned with status $retval and output:\n";
  print_r($output);
?>

产出如下：

Returned with status 0 and output: Array ( [0] => www-data )

你们有什么建议吗？

php

html

linux

回答 1

Stack Overflow用户

回答已采纳

发布于 2021-02-25 13:27:00

我想出了一个办法让它发挥作用，但可能不是最好的方法：

<?php
// attributes
        private $output;
        private $retval;
        private $command;

        // methods
        function get_serverUpdates($user, $password) {
            $command = 'echo '.$password.' | su -l '.$user.'-s /bin/bash -c "speedtest -L -f, --format=json" 2>&1';
            $resl = exec($command, $output, $retval);
            return json_decode(substr($resl, 10));
        }
?>

它确实返回正确的信息。

我认为问题在于，正如@MarkusZeller所说，www-data没有运行所有已安装程序的权限。

票数 0

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/66330903

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