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开启了swoole拓展，保存导致nginx频繁出现502错误

### 问题描述
开启了swoole拓展，保存导致nginx频繁出现502错误

### Swoole版本，PHP版本，以及操作系统版本信息
- php版本：PHP 7.3.6 (cli) (built: Jun 10 2019 15:51:22) ( NTS )
- linux版本：Linux version 4.4.0-82-generic (buildd@lgw01-43) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.4) ) #105-Ubuntu SMP Tue Jun 20 15:23:02 UTC 2017
- swoole版本：Version => 4.4.5

### 相关代码
如果我把swoole拓展（不是程序）停止掉了，我的nginx才不会出现502的问题，如果只是关闭swoole的脚步程序，也还是会报下面的错误。

```php
[18-May-2020 11:00:56] WARNING: [pool www] child 6690 said into stderr: ""
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "PHP message: PHP Fatal error:  Cannot redeclare swoole_exec() (previously declared in Var = null)"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "{"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "    $result = Swoole\Coroutine::exec($command);"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "    if ($result) {"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "        $outputList = explode(PHP_EOL, $result['output']);"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "        if ($output) {"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "            $output = array_merge($output, $outputList);"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "        } else {"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "            $output = $outputList;"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "        }"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "        $returnVar = $result['code'];"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "        return end($outputList);"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "    } else {"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "        return false;"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "    }"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "}"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: ""
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "function swoole_shell_exec(string $cmd)"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "{"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "    $result = Swoole\Coroutine::exec($cmd);"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "    if ($result && '' !== $result['output']) {"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "        return $result['output'];"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "    }"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "    return null;"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: "}"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 said into stderr: ":2) in @swoole-src/library/std/exec.php on line 17"
[18-May-2020 11:01:00] WARNING: [pool www] child 9618 exited with code 70 after 5.754100 seconds from start
[18-May-2020 11:01:04] WARNING: [pool www] child 9653 said into stderr: "PHP message: PHP Fatal error:  Cannot redeclare swoole_shell_exec() (previously declared in :19) in @swoole-src/library/std/exec.php on line 26"
```

### 你期待的结果是什么？实际看到的错误信息又是什么？
我期待着是怎么问题引起的，我该怎么去解决它。这样我的nginx才不会出现502的问题，

发布于3年前 · 30 次浏览 · 来自提问