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出於某種原因,此代碼不想工作。它應該算出用戶是否有足夠的積分投入贈品。你問之前,是我已經定義只是在不同的文件中(其中用戶指定他們想要多少學分下注的一個)
<?php
session_start();
$servername = "localhost";
$username = "root";
$password = "htq6m2";
$dbname = "transactions";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$query = "SELECT sum(points) AS points FROM transactions WHERE username = '".mysqli_real_escape_string($conn,$_SESSION['userid'])."'";
$result = mysqli_query($conn, $query);
$row = mysqli_fetch_assoc($result);
if ($_GET["credits"] > $row) {
echo("You don't have enough credits for that bet!");
} else {
echo("Nice you've got enough credits!")
}
?>
_CODE不WORK_是不夠的,打開錯誤的發展階段報告和使用'$ conn-> error'檢查 – Ghost
' $ result'不會給你任何可行的*結果*,試着對'$ row ['points']' –
「之前你問,是的,我已經定義d'信用'只是在不同的文件中「 - 您不」定義「GET參數;你用一個表單或鏈接提交它們。 – developerwjk