【发布时间】：2018-01-12 09:10:36
【问题描述】：
我正在尝试制作一种反击案开场白。我的问题是，我怀疑原因是 wamp，它不会加载，或者它需要很长时间以至于我无法得到任何结果。我阅读了所有关于使用 mysqli 从数据库中选择随机项目的帖子，它真的很慢并且不适合使用，但我认为它不会这么慢。所以我真的想知道这是否真的是导致问题的原因，或者我是否遗漏了一个完全不同的错误。在此先感谢:)
if(isset($_GET['iid'])) {
$iid = rString($_GET['iid']);
$checkOwnerQuery = $data->query('SELECT * FROM inventory WHERE id = "'.$iid.'" AND ownerId = "'.$id.'"');
$checkOwner = $checkOwnerQuery->num_rows;
if ($checkOwner == 1) {
// OWNER CONFIRMED, CONTINUE OPENING
$randomNmbr = mt_rand(1, 100);
if($randomNmbr == 1) {
while($row = $data->query('SELECT * FROM caserewards WHERE chance = "1" ORDER BY RAND() LIMIT 1')->fetch_assoc()) {
$rewardId = $row['id'];
$rewardName = $row['name'];
$rewardLore = $row['lore'];
$rewardType = $row['type'];
$rewardAmount = $row['amount'];
$rewardChance = $row['chance'];
$rewardColor = $row['color'];
$rewardImg = $row['img'];
$rewardActive = $row['active'];
}
echo $rewardName;
} else if($randomNmbr >= 97) {
while($row = $data->query('SELECT * FROM caserewards WHERE chance = "97" ORDER BY RAND() LIMIT 1')->fetch_assoc()) {
$rewardId = $row['id'];
$rewardName = $row['name'];
$rewardLore = $row['lore'];
$rewardType = $row['type'];
$rewardAmount = $row['amount'];
$rewardChance = $row['chance'];
$rewardColor = $row['color'];
$rewardImg = $row['img'];
$rewardActive = $row['active'];
}
echo $rewardName;
} else if($randomNmbr >= 95) {
while($row = $data->query('SELECT * FROM caserewards WHERE chance = "95" ORDER BY RAND() LIMIT 1')->fetch_assoc()) {
$rewardId = $row['id'];
$rewardName = $row['name'];
$rewardLore = $row['lore'];
$rewardType = $row['type'];
$rewardAmount = $row['amount'];
$rewardChance = $row['chance'];
$rewardColor = $row['color'];
$rewardImg = $row['img'];
$rewardActive = $row['active'];
}
echo $rewardName;
} else if($randomNmbr >= 90) {
while($row = $data->query('SELECT * FROM caserewards WHERE chance = "90" ORDER BY RAND() LIMIT 1')->fetch_assoc()) {
$rewardId = $row['id'];
$rewardName = $row['name'];
$rewardLore = $row['lore'];
$rewardType = $row['type'];
$rewardAmount = $row['amount'];
$rewardChance = $row['chance'];
$rewardColor = $row['color'];
$rewardImg = $row['img'];
$rewardActive = $row['active'];
}
echo $rewardName;
} else if($randomNmbr >= 80) {
while($row = $data->query('SELECT * FROM caserewards WHERE chance = "80" ORDER BY RAND() LIMIT 1')->fetch_assoc()) {
$rewardId = $row['id'];
$rewardName = $row['name'];
$rewardLore = $row['lore'];
$rewardType = $row['type'];
$rewardAmount = $row['amount'];
$rewardChance = $row['chance'];
$rewardColor = $row['color'];
$rewardImg = $row['img'];
$rewardActive = $row['active'];
}
echo $rewardName;
} else if($randomNmbr >= 60) {
while($row = $data->query('SELECT * FROM caserewards WHERE chance = "60" ORDER BY RAND() LIMIT 1')->fetch_assoc()) {
$rewardId = $row['id'];
$rewardName = $row['name'];
$rewardLore = $row['lore'];
$rewardType = $row['type'];
$rewardAmount = $row['amount'];
$rewardChance = $row['chance'];
$rewardColor = $row['color'];
$rewardImg = $row['img'];
$rewardActive = $row['active'];
}
echo $rewardName;
} else if($randomNmbr >= 50) {
goto a;
} else if($randomNmbr <= 50 && $randomNmbr != 1) {
a:
while($row = $data->query('SELECT * FROM caserewards WHERE chance = "50" ORDER BY RAND() LIMIT 1')->fetch_assoc()) {
$rewardId = $row['id'];
$rewardName = $row['name'];
$rewardLore = $row['lore'];
$rewardType = $row['type'];
$rewardAmount = $row['amount'];
$rewardChance = $row['chance'];
$rewardColor = $row['color'];
$rewardImg = $row['img'];
$rewardActive = $row['active'];
}
echo $rewardName;
} else {
echo 'Major danger';
}
echo '<div class="item_img_center" style="background-image: url()"></div>';
} else {
header('Location: inventory.php');
}
} else {
header('Location: inventory.php');
}
【问题讨论】：
-
一些合理的代码缩进是个好主意。它可以帮助我们阅读代码，更重要的是，它将帮助 您调试代码 Take a quick look at a coding standard 为您自己谋福利。您可能会被要求在几周/几个月内修改此代码，最后您会感谢我的。
-
这真的是一个 GOTO 我看到隐藏在那个代码中。至少 20 年没见过其中之一
-
无限循环确实有运行需要很长时间的习惯，您是否查看了 PHP 错误日志，以了解为什么该脚本运行了这么长时间。我希望在那里看到
max_execution_time超出错误！或者你只是把它关掉了？ -
@RiggsFolly 实际上我不知道错误日志存储在 wamp 的什么位置，我非常感谢您的反馈和建议。我以前从未使用过 goto，但我认为它会为我节省一些空间。
-
错误日志可以在
C:\wamp\logs中找到