Question

所以我正在研究我的搜索引擎脚本，它运行良好。但我想添加功能以在同一列中搜索两个选项。例如，我希望搜索引擎能够让用户获得安大略省和阿尔伯塔省人民的结果。我的输入表单允许用户在同一字段中检查两个框，但我的脚本仅搜索所选的第二个条件。

这是搜索脚本。

    <?php
    require_once("models/config.php");
    define("NUMBER_PER_PAGE", 5);  

    function pagination($current_page_number, $total_records_found, $query_string = null)
    {
        $page = 1;

        echo "Page: ";

        for ($total_pages = ($total_records_found/NUMBER_PER_PAGE); $total_pages > 0; $total_pages--)
        {
            if ($page != $current_page_number)
                echo "<a href=\"?page=$page" . (($query_string) ? "&$query_string" : "") . "\">";

            echo "$page ";

            if ($page != $current_page_number)
                echo "</a>";

            $page++;
        }
    }

    $page = ($_GET['page']) ? $_GET['page'] : 1;
    $start = ($page-1) * NUMBER_PER_PAGE;

    $personid = ($_POST['personid']) ? $_POST['personid'] : $_GET['personid'];
    $firstname = ($_POST['firstname']) ? $_POST['firstname'] : $_GET['firstname'];
    $surname = ($_POST['surname']) ? $_POST['surname'] : $_GET['surname'];
    $address = ($_POST['address']) ? $_POST['address'] : $_GET['address'];
    $city = ($_POST['city']) ? $_POST['city'] : $_GET['city'];
    $province =($_POST['province']) ? $_POST['province'] : $_GET['province'];
    $postalcode = ($_POST['postalcode']) ? $_POST['postalcode'] : $_GET['postalcode'];
    $phone = ($_POST['phone']) ? $_POST['phone'] : $_GET['phone'];
    $email = ($_POST['email']) ? $_POST['email'] : $_GET['email'];

    $sql = "SELECT * FROM persons WHERE 1=1";

    if ($personid)
        $sql .= " AND personid='" . mysqli_real_escape_string($mysqli,$personid) . "'";

    if ($firstname)
        $sql .= " AND firstname='" . mysqli_real_escape_string($mysqli,$firstname) . "'";

    if ($surname)
        $sql .= " AND surname='" . mysqli_real_escape_string($mysqli,$surname) . "'";

    if ($address)
        $sql .= " AND address='" . mysqli_real_escape_string($mysqli,$address) . "'";

    if ($city)
        $sql .= " AND city='" . mysqli_real_escape_string($mysqli,$city) . "'";

    if ($province)
        $sql .= " AND province='" . mysqli_real_escape_string($mysqli,$province) . "'";

    if ($postalcode)
        $sql .= " AND postalcode='" . mysqli_real_escape_string($mysqli,$postalcode) . "'";

    if ($phone)
        $sql .= " AND phone='" . mysqli_real_escape_string($mysqli,$phone) . "'";

    if ($email)
        $sql .= " AND email='" . mysqli_real_escape_string($mysqli,$email) . "'";

    $total_records = mysqli_num_rows(mysqli_query($mysqli,$sql));

    $sql .= " ORDER BY surname";
    $sql .= " LIMIT $start, " . NUMBER_PER_PAGE;


    pagination($page, $total_records, "personid=$personid&firstname=$firstname&surname=$surname&address=$address&city=$city&province=$province&postalcode=$postalcode&phone=phone&email=$email");


    $loop = mysqli_query($mysqli,$sql)
        or die ('cannot run the query because: ' . mysqli_error($mysqli,i));

     echo "<table border='1' cellpadding='10'>";
            echo "<tr> <th>First Name</th> <th>Surname</th> <th>Email</th> <th></th> <th></th></tr>";

    while ($record = mysqli_fetch_assoc($loop)) {
        echo "<tr>";
                    echo '<td>' . $record['firstname'] . '</td>';
                    echo '<td>' . $record['surname'] . '</td>';
                    echo '<td>' . $record['email'] . '</td>';

                    echo ("<td><a href=\"records.php?$record[personid]\">Edit</a></td>");

                    echo '<td><a href="delete.php?id=' . $record['personid'] . '">Delete</a></td>';
                    echo "</tr>"; 


    }
    echo "</table>";

    echo "<center>" . number_format($total_records) . " search results found</center>";


    pagination($page, $total_records, "personid=$personid&firstname=$firstname&surname=$surname&address=$address&city=$city&province=$province&postalcode=$postalcode&phone=phone&email=$email");
    ?>

如果你需要看到它，这里是我的脚本中的部分，它将省份列表作为一个复选框列表（当然有很多缺失，但它只是为了给你一个想法）

  <p><b>Province:</b>
 <?   
while ($row = mysqli_fetch_assoc($result)) { 
 echo "<input type='checkbox' name='province' value=' {$row['province']} '>  {$row['province']} ";
  } 
  ?>  </p><br />

有关如何使这项工作的任何想法？提前谢谢。

Answer 1

使复选框成为一个数组：

name='province[]'

然后implode数组并在查询中使用IN()构造。

WHERE province IN(?)

您使用mysqli所以使用预准备语句mysqli_stmt_bind_param来构造查询。我更喜欢PDO。

PHP搜索功能....使用来自同一变量的两个条件

1 个答案: