我正在開發(fā)一個項目，并嘗試創(chuàng)建一個通用部分來將各種表單數(shù)據(jù)保存到數(shù)據(jù)庫中。我寫下了以下代碼，將所有數(shù)據(jù)發(fā)送到 php 字段，從而將其發(fā)送到數(shù)據(jù)庫。但問題是，它給了我一個錯誤。if(isset($_POST['data_for']) && $_POST['data_for']=='save') {    $data = $_POST['formdata'];    print_r($data); // This is showing proper array as an output    foreach ($data as $key => $value) {             echo $value['name']; //This gives the key (index value) of the form "Eg. email"        echo $value['value']; //This gives the value of the user input "eg. abc@xyz.com"                $$value['name'] = $value['value']; //This line gives error as "Array to string conversion"    }    echo $email; //This is just a test to print a variable created in runtime    //The insertion to database code goes here.}上面的代碼是從下面的jquery獲取值$(document).on('submit','form.cat1', function(e){    e.preventDefault();    var forum = $(this).attr('forum');    var method = $(this).attr('method');    var nonce = $(this).attr('nonce');    var data_for = $(this).attr('data-for');    var formdata = $(this).serializeArray();    //alert(formdata);    $.ajax({        url:'formSubmitPoint.php',        method:method,        data:{formdata:formdata, nonce:nonce, forum:forum, data_for:data_for},        //processData: false,        //contentType: false,         success:function(data){            console.log(data);            if (data['result']=='success') {                if (data['action']=='redirect') {                    window.location.href=data['location'];                }                if (data['action']=='show') {                    $(data['location']).html(data['message']);                }            }            if (data['result']=='error') {                if (data['action']=='show') {                    $(data['location']).html(data['message']);                }            }        },        error:function(data){            console.log(data);        }    });})