laravel-php putenv function cannot be used in Chinese

If you know laravel, you can take a look at the above section; if you don’t, just go straight below the dividing line;

Any item in .env, here is MAIL_DRIVER as an example
Change it to "my" and use the env function, and you can get the value normally;
Change it to "I" and use the env function, and you can't get it normally;

<code>MAIL_DRIVER=我
var_dump(env(MAIL_DRIVER''));  // NULL


MAIL_DRIVER=我的
var_dump(env(MAIL_DRIVER''));  // 我的</code>

This situation will also occur with other Chinese words such as "good";
I have to say; laravel is broad and profound; I have studied the source code of the env function;
The problem I finally identified is;
--------- ----------------------------------------Understand and understand the dividing line between laravel framework- --------------------------------------------------

<code>putenv("PROJECT_NAME=我的");
phpinfo();</code>

You can search for PROJECT_NAME in Environment in phpinfo

<code>putenv("PROJECT_NAME=我");
phpinfo();</code>

Project_NAME cannot be found in Environment in phpinfo

Dear friends, why is this? How to set Chinese value without any problem?

Reply content:

If you know laravel, you can take a look at the above section; if you don’t, just go straight below the dividing line;

Any item in .env, here is MAIL_DRIVER as an example
Change it to "my" and use the env function, and you can get the value normally;
Change it to "I" and use the env function, and you can't get it normally;

<code>MAIL_DRIVER=我
var_dump(env(MAIL_DRIVER''));  // NULL


MAIL_DRIVER=我的
var_dump(env(MAIL_DRIVER''));  // 我的</code>

This situation will also occur with other Chinese words such as "good";
I have to say; laravel is broad and profound; I have studied the source code of the env function;
The problem I finally identified is;
--------- ----------------------------------------Understand and understand the dividing line between laravel framework- --------------------------------------------------

<code>putenv("PROJECT_NAME=我的");
phpinfo();</code>

You can search for PROJECT_NAME in Environment in phpinfo

<code>putenv("PROJECT_NAME=我");
phpinfo();</code>

Project_NAME cannot be found in Environment in phpinfo

Dear friends, why is this? How to set Chinese value without any problem?

I also tried it and found that as long as I call putenv('PROJECT_NAME=off') (four bytes, the same for Japanese kana) in the cgi environment, it will fail and return false, while in the cli environment No problem:

<code>➜  ~ $ php -r "var_dump(putenv('PROJECT_NAME=我')); echo getenv('PROJECT_NAME');"
bool(true)
我 </code>

I also find it quite confusing. I couldn’t find a similar situation after searching on Google. I hope other people can have good answers.

---

But since the questioner is using Laravel and is not particular about putenv, but just wants to get the value in .env smoothly, you can use some tips:

Add this function in helpers.php of your own project (or other places where custom helper functions are placed, if not, create a new one):

<code>if (! function_exists('menv')) {
    /**
     * Gets the value of an environment variable by getenv() or $_ENV.
     *
     * @param  string  $key
     * @param  mixed   $default
     * @return mixed
     */
    function menv($key, $default = null)
    {
        if (function_exists('putenv') && function_exists('getenv')) {
            // try to read by getenv()
            $value = getenv($key);

            if ($value === false) {
                return value($default);
            }
        } else {
            // try to read from $_ENV or $_SERVER
            if (isset($_ENV[$key])) {
                $value = $_ENV[$key];
            } elseif (isset($_SERVER[$key])) {
                $value = $_SERVER[$key];
            } else {
                return value($default);
            }
        }

        switch (strtolower($value)) {
            case 'true':
            case '(true)':
                return true;
            case 'false':
            case '(false)':
                return false;
            case 'empty':
            case '(empty)':
                return '';
            case 'null':
            case '(null)':
                return;
        }

        if (strlen($value) > 1 && Str::startsWith($value, '"') && Str::endsWith($value, '"')) {
            return substr($value, 1, -1);
        }

        return $value;
    }
}</code>

Customize a new function to obtain environment variables, and replace all env in the config/ directory with menv (I tried $_ENV, but the writing of $_SERVER does not work) Affected)

You can refer to this, it was originally done by me to prevent some users from being able to use putenv