按表单数据对出版物进行排序。查询数据库时出错（RedBeanPHP）

我需要根据从表单收到的数据对出版物进行排序

我得到这个错误：

致命错误：Uncaught[42000]-SQLSTATE[42000]：语法错误或访问冲突：1064您的SQL语法有错误；检查与您的MariaDB服务器版本对应的手册，以了解在第1行跟踪：0 D:\PHP\OSPanel\domains\test\libs\rb.php1080:redbeanppp\Driver\RPDO->runQuery'SELECT*FROM p..中使用的正确语法，数组1d:\PHP\OSPanel\domains\test\libs\rb.php4245:redbeanppp\Driver\RPDO->GetAll'SELECT*FROM p..，数组2d:\PHP\OSPanel\domains\test\libs\rb.php12311:redbeanppp\Adapter\DBAdapter->get'SELECT*FROM p..，数组3d:\PHP\OSPanel\domains\test libs\rb.php13324:redbeanppp\Facade:：query'get'，'SELECT*FROM p，数组4 D:\PHP\OSPanel\domains\test\index.php31:redbeanppp\Facade:：getAll'SELECT*FROM p..，数组5{main}在第810行的D:\PHP\OSPanel\domains\test\libs\rb.PHP中抛出

为什么不能将查询字符串作为参数传递给函数

我试图提出一种不同的算法，以避免将字符串$sql传递到R:：getAll函数的参数中，但它不起作用

以下是index.php中的表单本身：

            <form class = "search_form">
                <select name = "region">
                    <option value = "none" hidden = ""> Select a region </option>
                    <option value = "region1"> Region # 1 </option>
                    <option value = "region2"> Region # 2 </option>
                    <option value = "region3"> Region # 3 </option>
                    <option value = "region4"> Region # 4 </option>
                </select>
                <select name = "sity">
                    <option value = "none" hidden = ""> Select a city </option>
                    <option value = "sity1"> City # 1 </option>
                    <option value = "sity2"> City # 2 </option>
                    <option value = "sity3"> City # 3 </option>
                    <option value = "sity4"> City # 4 </option>
                </select>
                <select name = "make">
                    <option value = "none" hidden = ""> Select a make </option>
                    <option value = "make1"> Make # 1 </option>
                    <option value = "make2"> Make # 2 </option>
                    <option value = "make3"> Make # 3 </option>
                    <option value = "make4"> Make # 4 </option>
                </select>
                <select name = "model">
                    <option value = "none" hidden = ""> Select a model </option>
                    <option value = "model1"> Model # 1 </option>
                    <option value = "model2"> Model # 2 </option>
                    <option value = "model3"> Model # 3 </option>
                    <option value = "model4"> Model # 4 </option>
                </select>
                <input type = "number" name = "volume" min = "0" step = "any" placeholder = "Enter engine volume">
                <input type = "number" name = "mileage" min = "0" placeholder = "Enter vehicle mileage">
                <input type = "number" name = "numOfOwners" min = "0" placeholder = "Enter the number of hosts">
                <button type = "submit" class = "search-btn btn btn-warning"> Search </button>
            </form>

$sql = "SELECT * FROM publication";
    if(!empty($data)){
        $sql .=" WHERE";
        $bindings = [];
        $i = 0;
        foreach ($data as $key => $value) {
            $bindings[$i] = $value;
            $i++;
            if($data->next){
                $sql .= " $key = ? AND";
            }else{
                $sql .=" $key = ?";
            }
        }


        $publications = R::getAll($sql, $bindings);
        exit(json_encode($publications));
    }else{
        $publications = R::findAll('publication', "ORDER BY `id` DESC LIMIT ?, ?", array($from, $publication_on_page)); 
    }

main.js：

$('.search-btn').click(function (e){
    e.preventDefault();

    let region = $('select[name="region"]').val(),
        sity = $('select[name="sity"]').val(),
        make = $('select[name="make"]').val(),
        model = $('select[name="model"]').val(),
        volume = $('input[name="volume"]').val(),
        mileage = $('input[name="mileage"]').val(),
        numOfOwners = $('input[name="mileage"]').val();

    let formData = new FormData();
    if(region != 'none'){
        formData.append('region', region);
    }
    if(sity != 'none'){
        formData.append('sity', sity);
    }
    if(make != 'none'){
        formData.append('make', make);
    }
    if(model != 'none'){
        formData.append('model', model);
    }
    if(volume != ''){
        formData.append('volume', volume);
    }
    if(mileage != ''){
        formData.append('mileage', mileage);
    }
    if(numOfOwners != ''){
        formData.append('numOfOwners', numOfOwners);
    }

    $.ajax({
        url: 'index.php',
        type: 'GET',
        dataType: 'json',
        processData: false,
        contentType: false,
        cache: false,
        data: formData,
        success (data) {
            $("#publ").html('');
            for(value in data){
                $("#publ").append(
                    '<div class="col-md-6" style="background-color: red;">' + data[value]['id'] + '</div>'
                );
            }
        }
    });
});

告诉我排序是否正确？

似乎$data->next在这里不起作用，可能是因为$data是数组而不是对象，您可以尝试以下方法：

    $sql = "SELECT * FROM publication";
    if(!empty($data)){
        // Create an array for columns to make the filter
        $filters = [];
        $bindings = [];
        foreach ($data as $key => $value) {
            // No need to index for $bindings
            $bindings[] = $value;
            // Add column and ? to array
            $filters[] = "$key = ?";
        }
        // Apply glue to get the query
        $sql .= ' WHERE ' . implode(' AND ', $filters);

        // Do you want to order these too?

        $publications = R::getAll($sql, $bindings);
        exit(json_encode($publications));
    }else{
        $publications = R::findAll('publication', "ORDER BY `id` DESC LIMIT ?, ?", array($from, $publication_on_page)); 
    }

---

您应该看到：注意：尝试获取非对象的属性“next”。您是否已打开？逗号我认为是您的问题，或者更确切地说是缺少逗号您的if$data->next从来都不是真的请参阅我的第一条注释，因此您的WHERE子句是在没有任何和关键字的情况下生成的。@El_Vanja，很遗憾，错误报告已关闭。什么可以替换$data->next？根据查询语法上的错误，查询中缺少and关键字-'sity='sity1'make='make1'model='model1'volume=miliege=numoffown'。查询应该是-'sity='sity1'和make='make1'以及model='model1'和volume=miliety=numoffown'，依此类推。