Question

我设计了非常简单的关卡脚本，这里的代码是：

$LEVEL['0'] = 0; //0XP - basic value of main level.
$LEVEL['1'] = 500; //500XP
$LEVEL['2'] = 1100; //+600
$LEVEL['3'] = 1800; //+700
$LEVEL['4'] = 2500; //+800
$LEVEL['5'] = 3300; //+900
$LEVEL['6'] = 4200; //+1000
$LEVEL['7'] = 5200; //+1100
$LEVEL['8'] = 5300; //+1200
$LEVEL['9'] = 6500; //+1300
$LEVEL['10'] = 7800; //+1400 - increase scale rate by 100XP per each tenth level
$LEVEL['11'] = 9200; //+1600
$LEVEL['12'] = 10800; //+1800
$LEVEL['13'] = 12600; //+2000
$LEVEL['14'] = 14600; //+2200
$LEVEL['15'] = 16800; //+2400
$LEVEL['16'] = 19200; //+2600
$LEVEL['17'] = 21800; //+2800
$LEVEL['18'] = 24600; //+3000
$LEVEL['19'] = 27600; //+3200
$LEVEL['20'] = 30800; //+3500

$test = 18000;

for($i = 0; $i < count($LEVEL); $i++){

    if($test > $LEVEL[$i++]){

        $currentLevel = $i++;

    }

}

echo $currentLevel-1;

使用$ test变量可以很好地工作但是当我从SQL数据库中选择示例值时，它会在第十次迭代时突然停止。字段具有以下设置：

experience INT(6) UNSIGNED DEFAULT 0

我回应了价值并且它应该如此印刷，例如，如果它的10800它打印10800所以选择了正确的值但它显示的不是11级而是9，想法？谢谢。< / p>

Answer 1

$levels = array(
    0,
    500,  //500XP
    1100, //+600
    1800, //+700
    2500, //+800
    // --- all the XPs
);

$test = 18000;

foreach ($levels as $level => $xp) {
    if ($test < $xp) {
        break;
    }
}

echo $level;

数据库值没有什么特别之处..只需使用该值而不是$test

Answer 2

我正在使用从数据库中挑选的值。这是产生这种奇怪行为的代码块

//Using loaded user ID, load level of user and skill points.

$queryLevel = mysqli_query($connection, "SELECT * FROM users_levels WHERE id = '$userId'");
$userLevel = mysqli_fetch_assoc($queryLevel);
$userExperience = $userLevel['experience'];
$userPoints = $userLevel['points'];

//Level is 0 if for loop will not find value higher than any given in LEVEL array.

$currentLevel = 0;

for($i = 0; $i < count($LEVEL); $i++){

    if($userExperience > $LEVEL[$i++]){

        $currentLevel = $i++;

    }

}

这是我的数据库表的结构：

id INT(50) PRIMARY KEY
experience INT(6) UNSIGNED
points INT(2)
utf8_polish_ci

在该表中是一行，其中包含以下值：

+----------+----------+----------+ 
|    id    |experience|  points  |
+----------+----------+----------+ 
|    3     |   16200  |     0    |
+----------+----------+----------+

for循环不能正确处理从数据库中挑选的值

2 个答案: