[英]Delete row from database using PHP (using a HTML table)
我正在表單上執行“刪除”功能。 我不太開心,因為它不起作用! 我已經試過這段代碼:
while($row = $result->fetch_assoc())
{
$ordernr = $row['ordernr'];
$klantnaam = $row['klantnaam'];
$productnaam = $row['productnaam'];
$productid = $row['productid'];
echo "<tr>";
echo "<td width='150px'>" . $ordernr . "</td>";
echo "<td width='150px'>" . $klantnaam . "</td>";
echo "<td width='300px'>" . $productnaam . "</td>";
echo "<td width='100px'>" . $productid . "</td>";
echo "<td align='center' width='50px'><input name='delete[$ordernr]' type='checkbox'></td>";
echo "</tr>";
}
echo "<tr>";
echo "<td><input type='submit' name='verwijderen' value='Verwijderen'/></td>";
echo "</tr>";
echo "</table>";
echo "</form>";
$delete = $_POST['delete'];
if (isset($_POST['verwijderen'])) {
foreach($delete as $ordernr => $delete)
{
$ordernr = mysqli_real_escape_string($ordernr);
$query = mysqli_query("DELETE FROM overzicht WHERE ordernr= $ordernr");
}
}
你們知道我做錯了嗎?
提前致謝!
1)
echo "<td align='center' width='50px'><input name='delete[$ordernr]' type='checkbox'></td>";
轉換為
echo "<td align='center' width='50px'><input name='delete' type='checkbox' value='$ordernr'></td>";
2)
foreach($delete as $ordernr => $delete)
do it:
foreach($delete as $ordernr => $del)
您正在覆蓋$ _POST
您在這里重復使用變量時要進行迭代:
foreach($delete as $ordernr => $delete)
第二個$ delete會覆蓋第一個$ delete的值,並在工作中拋出一個扳手。
我建議將$ delete的先前實例重命名為$ deleteList並執行以下操作:
foreach($ deleteList as $ ordernr => $ delete)
請記住,您的許多代碼可以用更合適的不同方式完成。 在學習PHP的過程中,您會發現它們。
mysqli_query語法為
mysqli_query($con,"your query");
我會說您的輸入復選框需要一個值。 喜歡
<input type="checkbox" name="delete[1]" value="1" />
另一方面,這樣會更容易
<input type="checkbox" name="delete[]" value="$ordernr" />
然后你循環
foreach ($_POST["delete"] as $id) delete(id)
查詢中的con變量...
$query = mysqli_query($con,"DELETE FROM overzicht WHERE ordernr= $ordernr");
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