因此​​，这是我的想法，我有一个登录对话框的jQuery在我的主页，使用网页（登录表单对话框后面）会阻止任何人。我用ajax提交进入到一个PHP页面，然后检查是否用户名/密码组合存在于数据库中的信息。如果是的话，我还真然后关闭对话框（该网站允许访问）。

我如何使用Ajax来检查我的PHP脚本（从执行页）返回true或false？ 我是假设的AJAX功能的成功/错误选项被选中此，但低于code似乎没有工作。

  $（'登录'）。对话框（{
    closeOnEscape：假的，
    标题：假的，
    模式：真正的，
    宽度：'汽车'，
    展会：{效应：变脸，时间：1500}，
    标题：登录，
    按钮：{
        登录：函数（）{
            $阿贾克斯（{
                异步：假的，
                键入：POST，
                网址：SQL / login.php中'，
                成功：函数（）{
                    警报（成功！）;
                }，
                错误：函数（）{
                    警报（失败！）;
                }，
                数据类型：HTML
            }）;
        }
    }
}）;
$（登录）对话框（）父母（UI-对话。）找到（UI-对话框标题栏）。remove（）方法。;
 

解决方案

我所做的就是把回声在我的PHP与variabel被放入真或假的最后，我做了成功的在这个函数选项​​是这样的：

 成功：函数（响应）{
                    如果（响应）{
                            警报（成功！）;
                            }其他{
                            警报（失败！）;
                                 }

                    }
 

这工作对我来说，你可以在PHP把这个

 如果（$ MYVAR）{
$ anothervar = 1;
}其他{
$ anothervar = 0;
}
回声$ anothervar;
 

这样你就可以做到这一点：

 成功：函数（响应）{
                    如果（响应== 1）{
                            警报（成功！）;
                            }其他{
                            警报（失败！）;
                                 }

                    }
 

这是我做的方式，它工作正常 希望它是有用的。

So this is my idea, I have a login jquery dialog on my homepage that blocks anyone from using the webpage (behind the login form dialog). I use ajax to submit the information entered to a php page which then checks if the username/password combo exists in the database. If it does, I return true and then close the dialog box (allowing access to the site).

How do I use ajax to check if my php script (from the executed page) returns true or false? I was assuming the success/error options of the ajax function were checking this, but the below code doesnt seem to work.

    $('.login').dialog({
    closeOnEscape: false,
    title: false,
    modal: true,
    width: 'auto',
    show: {effect: "fade", duration: 1500},
    title: 'Login',
    buttons: {
        "Login": function() { 
            $.ajax({
                async: false,
                type: 'POST',
                url: 'sql/login.php',
                success: function(){
                    alert( "Success!");
                },
                error: function(){
                    alert( "Failed!" );
                },
                dataType: "html"
            });
        }
    }
});
$(".login").dialog().parents(".ui-dialog").find(".ui-dialog-titlebar").remove(); 

What I did was to put an echo at the end of my php with the variabel that is put in true or false, the I did this function inside the success option it is like this:

success: function(response){
                    if(response){
                            alert( "Success!");
                            }else{
                            alert( "Failed!" );
                                 }

                    }

This worked for me, and you can put this in the php

if($myvar){
$anothervar=1;
}else{
$anothervar=0;
}
echo $anothervar;

so you can do this:

success: function(response){
                    if(response==1){
                            alert( "Success!");
                            }else{
                            alert( "Failed!" );
                                 }

                    }

this is the way that I do it and it works fine Hope it is useful