php - 插入语句不起作用并且没有错误

Question

var lid = $('#lid').val();
$.ajax({
        type:"post",
        url:'../library/lib.php',
        data:'action=save_memo&lid'+lid,

        success:function(response){
            console.log(response);

        }

这是lib.php的内容

switch($action){
    case 'save_memo':
        save_memo($_POST['lid']);
        break;}

function save_memo($lid){
    $insert = "INSERT INTO tbl_memo (id) VALUES ('$lid')";

    if(mysql_query($insert) == false){
        $result = array("failed" => $insert)
    }else{
       $result = array("sucess" => $insert);
       echo json_encode($result);
    }

响应成功，但未插入数据库
请有人告诉我出了什么问题，提前致谢

Answer 1

我相信您在 jQuery 调用中缺少 = 符号:

数据:'action=save_memo&lid'+lid

应该是:

数据:'action=save_memo&lid='+lid，

此外，请查看 mysql_query manual page 上的大红色警告:

Warning

This extension is deprecated as of PHP 5.5.0, and will be removed in the future. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include:

• mysqli_query()
• PDO::query()