Question

我的PHP脚本有问题。如果我运行它，加载至少需要5秒钟。这是我的代码：

$informs = " AND `id`!=5198 AND `id`!=14045 AND `id`!=6948 AND `id`!=4414 AND `id`!=4451 AND `id`!=773 AND `id`!=14105 AND `id`!=3191 AND `id`!=14093 
AND `id`!=14397 AND `id`!=13319 AND `id`!=4297";

$displayed = array();

for ($i=0;$i<24;$i++) {

    $whereClause = "";

    //generating additional where clause
    foreach($displayed as $d){
        $whereClause .= " AND `id`!=".$d;

    }

$random = rand(1,100000);

if ($random >= 1 && $random <= 2) {
    //pele
    $sql = "SELECT * FROM `players_db` WHERE `revision`=12 AND `id`=4570"; 
}
else if ($random >= 3 && $random <= 6) {
    //revision 12 (no pele)
    $sql = "SELECT * FROM `players_db` WHERE `revision`=12 AND `id`!=4570 ORDER BY RAND() LIMIT 1"; 
}
else if ($random >= 7 && $random <= 10) {
    //messi, ronaldo
    $sql = "SELECT * FROM `players_db` WHERE `id`=186 OR `id`=1574 ORDER BY RAND() LIMIT 1"; 
}
else if ($random >= 11 && $random <= 59) {
    //revision TOTW
    $sql = "SELECT * FROM `players_db` WHERE `TOTW`=30 ORDER BY RAND() LIMIT 1";
}
else if ($random >= 60 && $random <= 129) {
    //PA Coin
    $sql = "UPDATE users SET balance = balance + 1 WHERE username = '" . $usernamez . "'";
    $result = $conn->query($sql);

    $sql = "SELECT * FROM `players_db` WHERE `revision`=98 "; 
} 
else if ($random >= 130 && $random <= 144) {
    //revision 0 and price BETWEEN >250000 AND <650000
    $sql = "SELECT * FROM `players_db` WHERE `winterupgrades`!=2 AND `revision`=0 AND `rating`>74 AND `rare`=2 AND `xb_end_range` BETWEEN 250000 AND 650000$informs". $whereClause ." ORDER BY RAND() LIMIT 1";
} 
else if ($random >= 145 && $random <= 164) {
    //revision 0 and price >149000 AND <250000
    $sql = "SELECT * FROM `players_db` WHERE `winterupgrades`!=2 AND `revision`=0 AND `rating`>74 AND `rare`=2 AND `xb_end_range` BETWEEN 150000 AND 250000$informs". $whereClause ." ORDER BY RAND() LIMIT 1"; 
} 
else if ($random >= 165 && $random <= 189) {
    //revision 0 and price >49000 AND <150000
    $sql = "SELECT * FROM `players_db` WHERE `winterupgrades`!=2 AND `revision`=0 AND `rating`>74 AND `rare`=2 AND `xb_end_range` BETWEEN 50000 AND 150000$informs". $whereClause ." ORDER BY RAND() LIMIT 1"; 
} 
else if ($random >= 190 && $random <= 219) {
    //revision 0 and price >24000 AND <50000
    $sql = "SELECT * FROM `players_db` WHERE `winterupgrades`!=2 AND `revision`=0 AND `rating`>74 AND `rare`=2 AND `xb_end_range` BETWEEN 25000 AND 50000$informs". $whereClause ." ORDER BY RAND() LIMIT 1"; 
}
else if ($random >= 220 && $random <= 100000) {
    //revision 0 and price < 25000
    $sql = "SELECT * FROM `players_db` WHERE `winterupgrades`!=2 AND `revision`=0 AND `rating`>74 AND `rare`=2 AND `xb_end_range` < 25000$informs". $whereClause ." ORDER BY RAND() LIMIT 1";
    }

    $result = $conn->query($sql);
    $row = mysqli_fetch_array($result);

    // add displayed data set to array
    $result4 = $conn->query($sql);
    while($row4=mysqli_fetch_array($result4)){
        $displayed[] = $row['id'];
    }

你看到的是生成一个随机数，然后它会查看它所属的类别，然后它会选择一个sql查询并添加所选择的id＆＃39;到一个数组，所以它不能被选中两次。我希望有人可以帮助我改进我的剧本。

谢谢！

Answer 1

“脚本”不是什么运行缓慢...把mysql从等式中取出来它会运行得很好。

echo 'Starting at: ' . microtime(true) . '<br>';

$informs = " AND `id`!=5198 AND `id`!=14045 AND `id`!=6948 AND `id`!=4414 AND `id`!=4451 AND `id`!=773 AND `id`!=14105 AND `id`!=3191 AND `id`!=14093 AND `id`!=14397 AND `id`!=13319 AND `id`!=4297";

$displayed = array();
$usernamez = 'Some user';

for ($i = 0; $i < 24; $i++) {

  $whereClause = "";
  foreach ($displayed as $d) {
    $whereClause .= " AND `id`!=" . $d;
  }
  $random = rand(1, 100000);

  if ($random >= 1 && $random <= 2) {
    $sql = "SELECT * FROM `players_db` WHERE `revision`=12 AND `id`=4570";
  } else if ($random >= 3 && $random <= 6) {
    $sql = "SELECT * FROM `players_db` WHERE `revision`=12 AND `id`!=4570 ORDER BY RAND() LIMIT 1";
  } else if ($random >= 7 && $random <= 10) {
    $sql = "SELECT * FROM `players_db` WHERE `id`=186 OR `id`=1574 ORDER BY RAND() LIMIT 1";
  } else if ($random >= 11 && $random <= 59) {
    $sql = "SELECT * FROM `players_db` WHERE `TOTW`=30 ORDER BY RAND() LIMIT 1";
  } else if ($random >= 60 && $random <= 129) {
    $sql = "UPDATE users SET balance = balance + 1 WHERE username = '" . $usernamez . "'";
    $sql = "SELECT * FROM `players_db` WHERE `revision`=98 ";
  } else if ($random >= 130 && $random <= 144) {
    $sql = "SELECT * FROM `players_db` WHERE `winterupgrades`!=2 AND `revision`=0 AND `rating`>74 AND `rare`=2 AND `xb_end_range` BETWEEN 250000 AND 650000$informs" . $whereClause . " ORDER BY RAND() LIMIT 1";
  } else if ($random >= 145 && $random <= 164) {
    $sql = "SELECT * FROM `players_db` WHERE `winterupgrades`!=2 AND `revision`=0 AND `rating`>74 AND `rare`=2 AND `xb_end_range` BETWEEN 150000 AND 250000$informs" . $whereClause . " ORDER BY RAND() LIMIT 1";
  } else if ($random >= 165 && $random <= 189) {
    $sql = "SELECT * FROM `players_db` WHERE `winterupgrades`!=2 AND `revision`=0 AND `rating`>74 AND `rare`=2 AND `xb_end_range` BETWEEN 50000 AND 150000$informs" . $whereClause . " ORDER BY RAND() LIMIT 1";
  } else if ($random >= 190 && $random <= 219) {
    $sql = "SELECT * FROM `players_db` WHERE `winterupgrades`!=2 AND `revision`=0 AND `rating`>74 AND `rare`=2 AND `xb_end_range` BETWEEN 25000 AND 50000$informs" . $whereClause . " ORDER BY RAND() LIMIT 1";
  } else if ($random >= 220 && $random <= 100000) {
    $sql = "SELECT * FROM `players_db` WHERE `winterupgrades`!=2 AND `revision`=0 AND `rating`>74 AND `rare`=2 AND `xb_end_range` < 25000$informs" . $whereClause . " ORDER BY RAND() LIMIT 1";
  }

//echo 'Run # : ' . $i . var_export($sql, true) . '<br>';
}

echo 'Finishing at : ' . microtime(true).'<br>';

结果是：

 Starting at: 1461782077.4058
 Finishing at : 1461782077.4058

使用microtime()单独确认您的查询，以准确确定哪一个正在减慢您的速度，然后我们可以从那里开始。

我的PHP脚本至少需要5秒才能加载

1 个答案: