codeigniter网站上的奇怪错误 - javascript $ .ajax

Question

我的codeigniter网站有一个奇怪的错误。所有echo json_encode语句在参数之前都有一个s +回车字符串，由于未定义的格式而停止触发成功事件，并且在我从php发送的html文本之前还有s +回车符。是否有人在此之前遇到过这样的错误，或者知道在哪里寻找或如何纠正它？

这是chrome中的错误输出：

DEPENDENCY

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<exception>: SyntaxError: Unexpected token s
message: "Unexpected token s"
stack: "SyntaxError: Unexpected token s
    at Object.parse (native)
    at e.extend.parseJSON (/js/site/jquery-1.7.1.min.js:3:11020)
    at cc (/js/site/jquery-1.7.1.min.js:3:1382)
    at w (/js/site/jquery-1.7.1.min.js:7:11263)
    at XMLHttpRequest.f.support.ajax.f.ajaxTransport.send.d (/js/site/jquery-1.7.1.min.js:7:17218)"
get stack: function () { [native code] }
set stack: function () { [native code] }
__proto__: Error
b: "s

{"status_code":1,"message":"welcome"}"

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function signin(){

	var signin_email = $('#signin_email_address').val();

	var signin_password = $('#signin_password').val();

	

	

	

	 if(signin_email==''){

		alert('Please enter the email address');

	}else if(signin_password==''){

		alert('Please enter the password');

	}else if(signin_password.length < 6){

		alert('Password must be minimum of 6 characters');

	}

	
	else {

		var remember = 'no';

		if($('#remember').is(':checked')){

			remember = 'yes';

		}



		$.ajax({

			

	        type: 'POST',

	        url: baseURL+'site/user/login_user',

	        data: {"email":signin_email,"password":signin_password,"remember":remember

			},

			

	        dataType: 'json',

			

	        success: function(json){
              

				if(json.status_code == 1){

					window.location.reload();

					

				}else{

				

					alert(json.message);

				}

			}

	    });

	}

	return false;

}

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