带有分页代码的搜索结果不会 return 结果

Question

我很难使带有分页代码的搜索结果正常工作。它确实成功地抓取了在另一个页面上的 html 表单中输入的搜索关键字，并将其带入此 search.php 页面。如果我回显 $search 我会在页面上看到关键字。但是我没有得到任何结果，即使我应该查询。任何人都可以看到可能发生的事情吗？

require "PDO_Pagination.php";

if(isset($_REQUEST["search_text"]) && $_REQUEST["search_text"] != "")
{

    $search = htmlspecialchars($_REQUEST["search_text"]);
    $pagination->param = "&search=$search";
    echo $search;

    $pagination->rowCount("SELECT * FROM stories WHERE stories.genre = $search");
    $pagination->config(3, 5);
    $sql = "SELECT * FROM stories WHERE stories.genre = $search ORDER BY SID ASC LIMIT $pagination->start_row, $pagination->max_rows";
    $query = $connection->prepare($sql);
    $query->execute();
    $model = array();

    while($rows = $query->fetch())
    {
        $model[] = $rows;
    }
}
else
{
    $pagination->rowCount("SELECT * FROM stories");
    $pagination->config(3, 5);
    $sql = "SELECT * FROM stories ORDER BY SID ASC LIMIT $pagination->start_row, $pagination->max_rows";
    $query = $connection->prepare($sql);
    $query->execute();
    $model = array();

    while($rows = $query->fetch())
    {
        $model[] = $rows;
    }
}

Answer 1

$query = "SELECT * FROM stories";

if(isset($_REQUEST["search_text"]) && $_REQUEST["search_text"] != "")
{
    $search = htmlspecialchars($_REQUEST["search_text"]);
    $pagination->param = "&search=$search";
    $query .= " WHERE genre LIKE '%$search%'";
}
// No need for else statement.
$pagination->rowCount($query);
$pagination->config(3, 5);
$query .= " ORDER BY SID ASC LIMIT {$pagination->start_row}, {$pagination->max_rows}";

$stmt = $connection->prepare($query);
$stmt->execute();
$model = $stmt->fetchAll();
var_dump($model);

Answer 2

在您的查询中执行：

WHERE stories.genre LIKE '%string%');

而不是：

WHERE stories.genre = 'string');

因为 equals 会想要从字面上等于字段。

带有分页代码的搜索结果不会 return 结果

Search results with pagination code won't return results

php

pdo