尝试在PHP 7.4中访问类型为bool的值的数组偏移量 [英] Trying to access array offset on value of type bool in PHP 7.4

问题描述

我刚刚将服务器的PHP版本升级到PHP 7.4.1，现在出现此错误:
Notice: Trying to access array offset on value of type bool in

I just upgraded my server's PHP version to PHP 7.4.1 and now getting this error :
Notice: Trying to access array offset on value of type bool in

public static function read($id)
{
    $Row = MySQL::query("SELECT `Data` FROM `cb_sessions` WHERE `SessionID` = '$id'", TRUE);

    # http://php.net/manual/en/function.session-start.php#120589
    //check to see if $session_data is null before returning (CRITICAL)
    if(is_null($Row['Data']))
    {
        $session_data = '';
    }
    else
    {
        $session_data = $Row['Data'];
    }

    return $session_data;
}

PHP 7.4的修复程序是什么?

What is the fix for PHP 7.4 ?

推荐答案

易于使用PHP ?? isset运算符

Easy with Php ?? isset operator

return $Row['Data'] ?? 'default value';

或者您可以使用

$Row['Data']??='default value';
 return $Row['Data'];

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