使用PHP foreach循环创建MySQL表-语法错误

Question

建立我自己的电子商务网站并在后端ive中创建一个表单，管理员可以在其中创建某些产品过滤器组（例如颜色）。

当我尝试使用foreach循环将新表插入数据库时​​，im确保未插入任何空白条目（并防止这些空白条目引起问题）。

但是，我遇到了语法问题，对此进行了充分的研究，但未取得任何成功。

您的SQL语法有误； 在第1行的“ entry_date DEFAULT CURRENT_TIMESTAMP）”附近检查与MySQL服务器版本相对应的手册以使用正确的语法

我的代码：

// GROUP NAME PROVIDED

$group_name = $_POST['g_name'];

// FILTER OPTIONS PROVIDED

$filter_1 = $_POST['filter_1'];
$filter_2 = $_POST['filter_2'];
$filter_3 = $_POST['filter_3'];
$filter_4 = $_POST['filter_4'];
$filter_5 = $_POST['filter_5'];
$filter_6 = $_POST['filter_6'];
$filter_7 = $_POST['filter_7'];
$filter_8 = $_POST['filter_8'];
$filter_9 = $_POST['filter_9'];
$filter_10 = $_POST['filter_10'];
$filter_11 = $_POST['filter_11'];

include '../connection.php';

$query = "CREATE TABLE $group_name (
entry_id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
product_name VARCHAR(255) NOT NULL,
product_id VARCHAR(255) NOT NULL,";

$newarray = array($filter_1,$filter_2,$filter_3,$filter_4,$filter_5,$filter_6,$filter_7,$filter_8,$filter_9,$filter_10,$filter_11);

    // For each value that is not NULL
    foreach ($newarray as $key => $value) {
        if (is_null($value) === false) {
            $new_array[$key] = $value;
            echo $value;

           $query = "$value VARCHAR(255) NOT NULL,";

        }

    }

$query= "entry_date DEFAULT CURRENT_TIMESTAMP)";

// Checking if query was successful or not

if (mysqli_query($connection, $query )) {
    echo "Table created successfully";
} else {
    echo "Error creating table: " . mysqli_error($connection);
}

mysqli_close($connection);

我尝试过对时间戳插入进行不同的更改，但是没有运气。

值得注意的是，我还对查询进行了拆分，以便可以包含foreach循环。

任何帮助，将不胜感激！

PS：我知道这段代码可以进行SQL注入，因此我想在使其安全之前使其正常运行！

谢谢。 斯坦

工作代码：

// GROUP NAME PROVIDED

$group_name = $_POST['g_name'];

// FILTER OPTIONS PROVIDED

$filter_1 = $_POST['filter_1'];
$filter_2 = $_POST['filter_2'];
$filter_3 = $_POST['filter_3'];
$filter_4 = $_POST['filter_4'];
$filter_5 = $_POST['filter_5'];
$filter_6 = $_POST['filter_6'];
$filter_7 = $_POST['filter_7'];
$filter_8 = $_POST['filter_8'];
$filter_9 = $_POST['filter_9'];
$filter_10 = $_POST['filter_10'];
$filter_11 = $_POST['filter_11'];

include '../connection.php';

$query = "CREATE TABLE $group_name (
entry_id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
product_name VARCHAR(255) NOT NULL,
product_id VARCHAR(255) NOT NULL,";

$newarray = array($filter_1,$filter_2,$filter_3,$filter_4,$filter_5,$filter_6,$filter_7,$filter_8,$filter_9,$filter_10,$filter_11);

$filtered_array = array_filter($newarray);

    // For each value that is not NULL
    foreach ($filtered_array as $key => $value) {

            $filtered_array[$key] = $value;
            echo $value;

           $query .= "$value VARCHAR(255) NOT NULL,";       


    }

$query .= "entry_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP)";

echo "<br><br>".$query;

// Checking if query was successful or not

if (mysqli_query($connection, $query )) {
    echo "Table created successfully";
} else {
    echo "Error creating table: " . mysqli_error($connection);
}

mysqli_close($connection);

Answer 1

您缺少类型：

entry_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP

要么

entry_date DATETIME DEFAULT CURRENT_TIMESTAMP

Answer 2

您覆盖变量$ query

使用=。 如果要累积字符串中的数据

$query =. "entry_date DEFAULT CURRENT_TIMESTAMP)";

购买这种方式并不是很好的存储方式