使用php刪除數據庫中的數據

-1

我需要通過使用PHP代碼刪除數據庫上的數據，我寫了代碼，但有一些錯誤消息。這裏是PHP代碼（del.php）： -使用php刪除數據庫中的數據

<!DOCTYPE html> 
<html> 
<body> 
<?php 

$conn = mysql_connect('localhost', 'root',''); 

if ($conn->connect_error) { 

die("Connection failed: " . $conn->connect_error); 
} 

$sql = "DELETE FROM register WHERE name='' "; 

if ($conn->query($sql) === TRUE) 
{ 
    echo "Record deleted successfully"; 
} else { 
    echo "Error deleting record: " . $conn->error; 
} 
$conn->close(); 
?> 
</body> 
</html>

數據庫名稱是「熱帶雨林」和表名「註冊」，在數據庫文件名是「名稱，電子郵件，聯繫方式，地址「，我需要刪除名稱或電子郵件或聯繫。如何刪除！

來源

2016-11-08 SelvaKumar Duraisamy

這裏已經問過這麼多的時間 – Blueblazer172

「但是有一些錯誤信息。」 http://stackoverflow.com/help/how-to-ask – e4c5

@SelvaKumar你的錯誤信息是什麼？ – Blueblazer172

//這將刪除整行：

<!DOCTYPE html> 
<html> 
<body> 
<?php 

$servername = "localhost"; 
$username = "root"; 
$password = "your_password"; // add your pw from the here 
$dbname = "selva"; 

// Create connection 
$conn = new mysqli($servername, $username, $password, $dbname); 

// Check connection 
if ($conn->connect_error) { 
    die("Connection failed: " . $conn->connect_error); 
} 
//this will delete the whole row 
$sql = "DELETE FROM register WHERE 1 "; 

if ($conn->query($sql) === TRUE) 
{ 
    echo "Record deleted successfully"; 
} else { 
    echo "Error deleting record: " . $conn->error; 
} 
$conn->close(); 
?> 
</body> 
</html>

//這將只刪除列您在此處設置：

<!DOCTYPE html> 
<html> 
<body> 
<?php 

$servername = "localhost"; 
$username = "root"; 
$password = "your_password"; // add your pw from the here 
$dbname = "selva"; 

// Create connection 
$conn = new mysqli($servername, $username, $password, $dbname); 

// Check connection 
if ($conn->connect_error) { 
    die("Connection failed: " . $conn->connect_error); 
} 
$sql = "ALTER TABLE register DROP Name, DROP Email; DROP Contact; "; 

if ($conn->query($sql) === TRUE) 
{ 
    echo "Record deleted successfully"; 
} else { 
    echo "Error deleting record: " . $conn->error; 
} 
$conn->close(); 
?> 
</body> 
</html>

希望它會幫助你:)

來源

2016-11-08 09:43:24 Blueblazer172

使用php刪除數據庫中的數據

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