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我有一個包含三列的數據庫:ID,userName,反饋 我希望在userName相同時更新反饋值。如果列中存在相同名稱(在MySQL中使用PHP),則更新行中的值
我的PHP代碼:
<?php
conn = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$value = $_POST['name'];
$value2 = $_POST['message'];
$sql = "INSERT INTO js (userName, feedback) VALUES('$value', '$value2');
if ($conn->query($sql) === TRUE) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . $conn->error;
};
$conn->close();
?>