Question

这就是我想要做的。我让用户输入DATEFROM和DATETO。然后，当用户单击该按钮时，它将从我的表WHERE DATEFROM BETWEEN DATETO执行SELECT *查询。我不知道出了什么问题。请帮忙。

<html>
    <head></head>
    <body>
        <?php
        <form method="POST" action="">
        DATE FROM: <input type="date" name="datefrom"> TO: <input type="date" name="dateto"> <input type="submit" value="Extract excel file" name="extract"></input>
        </form>

        $datefrom = "datefrom";
        $dateto = "dateto";

        if(isset($_POST['extract'])){
            mysql_connect("localhost", "root");
            mysql_select_db("sample");

            $myquery = "SELECT * FROM biometrics WHERE date_created BETWEEN '" . $datefrom . "' AND '" . $dateto . "ORDER BY id_biometrics";


            $result = mysql_query($myquery);

            echo "<table border='1'>
            <tr>
                <th>ID</th>
                <th>Employee Number</th>
                <th>Date Created</th>
                <th>Time Created</th>
                <th>Status</th>
            </tr>";

            while($data = mysql_fetch_row($result))
            {
                echo("<tr>
                <td>$data[0]</td>
                <td>$data[1]</td>
                <td>$data[2]</td>
                <td>$data[3]</td>
                <td>$data[4]</td>
                </tr>");
            }

            echo "</table>";

        }

        ?>
    </body>
</html>

Answer 1

为什么这一行没有密码。

mysql_connect("localhost", "root");

希望date_created列为Date或Datetime格式。它不能是int或varchar或任何其他东西。

并在ORDER BY之前添加引号。

   $myquery = "SELECT * FROM biometrics WHERE date_created BETWEEN '" . $datefrom . "' AND '" . $dateto . "' ORDER BY id_biometrics";

Answer 2

你错过了'，它应该是

"SELECT * 
       FROM biometrics 
       WHERE date_created 
       BETWEEN '" . $datefrom . "' AND '" . $dateto . "' ORDER BY id_biometrics";
                                                       ^
                                                       ^

Answer 3

你可以试试吗，你需要在ORDER BY

之前添加空间

mysql_connect("localhost", "root", "");

$myquery = "SELECT * FROM biometrics WHERE date_created BETWEEN ('" . $datefrom . "' AND '" . $dateto . "') ORDER BY id_biometrics";

Answer 4

你在查询中错过了一个引用（'），试试这个

if(isset($_POST['extract'])){
        mysql_connect("localhost", "root");
        mysql_select_db("sample");

          $datefrom = $_POST['datefrom'];
          $dateto = $_POST['dateto'];

        $myquery = "SELECT * FROM biometrics WHERE date_created BETWEEN '" . $datefrom . "' AND '" . $dateto . "' ORDER BY id_biometrics";


        $result = mysql_query($myquery);

希望这对你有用

单击按钮时用户输入的POST查询

4 个答案: