我的 php 脚本至少需要 5 秒才能加载

我的PHP脚本有问题。如果我运行它，加载至少需要 5 秒。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，然后它查看它属于哪个类别，然后它选择一个 sql 查询并将选择的"id"添加到数组中，这样它就不会被选中两次。我希望有人能帮助我改进我的脚本。

谢谢！