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如何使用php刪除數據庫中的記錄? 我有一些代碼正在刪除,但它不會刪除記錄

[英]How to delete a record in database using php? I have some of my codes in deleting but it won't delete the record

這是我的 deleteriddle.php 但它不起作用。 請幫我

<?php

require("dbcon.php");

$ridid = isset ($_GET['riddleid'])?$_GET['riddleid']:"";
$query = sprintf("DELETE FROM riddle WHERE riddleid= '$ridid'");
$result = mysql_query($query);

if (!$result) {
    die('Invalid query: ' . mysql_error());
}
else {
    echo '<script type="text/javascript">
    alert("Riddle successfully delete");
    window.location.href = "viewriddle.php";
    </script>';
}

mysql_close($dbcon);

?>

嘗試這個 :

$query = sprintf("DELETE FROM riddle WHERE riddleid= %u", $ridid);

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