Question

我有一个带有一些复选框的页面，如果只选中一个复选框，它可以正常工作，但是如果我选择2个或更多复选框，结果显示正常但脚本切断后页面的其余部分。任何想法会导致这种情况发生。

<?php

if (isset($_POST['criteria']) && !empty($_POST['criteria'])) {
    foreach($_POST['criteria'] as $key => $value) {

        // get the function

        include ($_SERVER['DOCUMENT_ROOT'] . '/scripts/pagination-functions.php');

        $page = (int)(!isset($_GET["page"]) ? 1 : $_GET["page"]);
        $limit = 14;
        $startpoint = ($page * $limit) - $limit;

        // Runs mysql_real_escape_string() on every value encountered.

        $clean_criteria = array_map('mysql_real_escape_string', $_REQUEST['criteria']);

        // Convert the array into a string.

        $criteria = implode("','", $clean_criteria);

        // to make pagination

        $statement = "table WHERE page IN ('$criteria') ORDER BY long_title ASC";
        if (!$query = mysql_query("SELECT * FROM {$statement} LIMIT {$startpoint} , {$limit}")) {
            echo "Cannot parse query";
        }
        elseif (mysql_num_rows($query) == 0) {
            echo "No records found";
        }
        else {
            echo "";
            while ($row = mysql_fetch_assoc($query)) {
                echo "" . $row['name'] . "<br />
             " . $row['description'] . "";
            }
        }

        echo "<div class=\"pagination\">";
        echo pagination($statement, $limit, $page);
        echo "</div>";
    }
}

?>

如果有人可以提供帮助或指出正确的方向，我会非常感激

Answer 1

您确定要将所有内容放在foreach循环中吗？看起来你根本不需要那个foreach循环，因为你将标准项目作为一个组使用，而不是单独使用：

$clean_criteria = array_map('mysql_real_escape_string', $_REQUEST['criteria']);
$criteria = implode("','", $clean_criteria);

这意味着您的查询将针对指定的每个条件执行一次，但每个查询都已查看所有条件。你永远不会引用$key或$value，所以我不认为循环是有用的。

重写代码示例

<?php

if (!empty($_POST['criteria'])) {

    // get the function

    include ($_SERVER['DOCUMENT_ROOT'] . '/scripts/pagination-functions.php');

    $page = (int)(!isset($_GET["page"]) ? 1 : $_GET["page"]);
    $limit = 14;
    $startpoint = ($page * $limit) - $limit;

    // Runs mysql_real_escape_string() on every value encountered.

    $clean_criteria = array_map('mysql_real_escape_string', $_POST['criteria']);

    // Convert the array into a string.

    $criteria = implode("','", $clean_criteria);

    // to make pagination

    $statement = "table WHERE page IN ('$criteria') ORDER BY long_title ASC";
    $query = mysql_query("SELECT * FROM {$statement} LIMIT {$startpoint} , {$limit}");
    if (!$query) {
        echo "Cannot parse query";
    } elseif (mysql_num_rows($query) == 0) {
        echo "No records found";
    } else {
        while ($row = mysql_fetch_assoc($query)) {
            echo $row['name'] . "<br />" . $row['description'] . "<br /><br />";
        }
    }

    echo "<div class=\"pagination\">";
    echo pagination($statement, $limit, $page);
    echo "</div>";
}
?>

选中多个复选框时，页面会中断

1 个答案:

重写代码示例