Question

您好我可以帮助我解决我遇到问题的脚本; \我想从不同的列和价格范围创建一个搜索脚本：所以search.php就是：

<?php
/* connect to the database*/
$db = new mysqli("localhost", "root", "", "movie");
/* check connection */
if ($db->connect_errno) {
    echo "Connection failed: " . $db->connect_error;
    exit();
}
$query="SELECT * FROM `filmi` 
         WHERE (`nomer` rlike '%$search%' OR 
                `rezume` rlike '%$search%' OR 
                `kategoriq` rlike '%$search%') AND 
                `seriq` BETWEEN '%$pricemin%' AND '$pricemax'  
         ORDER BY seriq ASC";
/* create a prepared statement */
if ($stmt = $db->prepare($query)) {
    /* bind parameters for markers */
    $stmt->bind_param("sssdd", $search, $search, $search, $pricemin, $pricemax);
    /* execute query */
    $stmt->execute();
    /* get result */
    $result = $stmt->get_result();
    if ($result) {
    /* now you can fetch the results into an assoc array */
        while ($row = $result->fetch_assoc()) {
            echo $row['nomer']. ", " .$row['rezume']. ", " .$row['kategoriq']. ", " .$row['seriq']. "<br>";
        }
    }
    /* close statement */
    $stmt->close();
}
/* close db connection */
$db->close();

?>

“<form method=?>”表单填写$ search和$ pricemin / $ pricemax字段应该是什么？

Answer 1

您可以在GET标记中使用POST或<form>方法

和

在PHP脚本中，您可以使用$form_var_name = $_REQUEST['form_var_name']来访问由表单调度的数据。具体如下

$search = $_REQUEST['search']; 
$pricemin = $_REQUEST['pricemin'];
$pricemax = $_REQUEST['pricemax'];

Answer 2

检查$search是否存在。意味着，$search是否有一些价值。

if(isset($search) && $search!=''){
    case 1
}
else{
    case 2
}

案例1 ：如果$ search中有值，则将其包含在where子句中下面的查询是一个解释我的想法的例子。

$query="SELECT * FROM `filmi` 
     WHERE (`nomer` rlike '%$search%' OR 
            `rezume` rlike '%$search%' OR 
            `kategoriq` rlike '%$search%') AND 
            `seriq` BETWEEN '%$pricemin%' AND '$pricemax'  
     ORDER BY seriq ASC";

案例2： 如果$ search中没有值，则不在where子句中包含它检查以下查询

$query="SELECT * FROM `filmi` 
     WHERE `seriq` BETWEEN '%$pricemin%' AND '$pricemax'  
     ORDER BY seriq ASC";

如何使用assoc数组</form>创建<form>进行搜索

2 个答案: