Question

我正在使用AJAX来处理我的ChangePassword类，它扩展了我的DataProcessor类。我从AJAX响应中得到的一切都是以某种方式在它之前添加了一个巨大的空白，可能相当于10个空格。以下是我的ChangePassword类：

<?php
require_once "../support/RequiredClasses.php";
class ChangePassword extends DataProcessor {
    private $_old_password;
    private $_new_password_1;
    private $_new_password_2;
    private $_password_enc;
    //============================================================================================================================================ Class Constrcutor
    public function __construct($_old_password,$_new_password_1,$_new_password_2){
        try {
            $_DM                     = new DataManager();
            $this->_conn             = $_DM->connect();
            $this->_old_password     = filter_var($_old_password,  FILTER_SANITIZE_STRING);
            $this->_new_password_1   = filter_var($_new_password_1,FILTER_SANITIZE_STRING);
            $this->_new_password_2   = filter_var($_new_password_2,FILTER_SANITIZE_STRING);
                if (!$_old_password OR !$_new_password_1 OR !$_new_password_2)
                                                                     {throw new Exception("You have not filled in all of the fields.");}
                if ($this->_new_password_1 != $this->_new_password_2){throw new Exception("The two new passwords you entered do not match.");}
                if (!isset($this->_new_password_1[7]))               {throw new Exception("Your new password must be at least 8 digits in length.");}
            $this->_old_password_enc = $_DM->encrypt($this->_old_password,1,$_SESSION["user_email"]);   
                if (!$this->verifyPassword())                        {throw new Exception("The old password you entered was incorrect.");}
            $this->_new_password_enc = $_DM->encrypt($this->_new_password_1,1,$_SESSION["user_email"]); 
            $this->_access            = $this->makeChanges();
        } // end try
        catch (Exception $_exception){$this->_errors[] = $_exception->getMessage();}
    } // end __construct
    public function ChangePassword(){$this->__construct($_old_password,$_new_password_1,$_new_password_2);}
    //============================================================================================================================================ Changing Password
    protected function makeChanges(){
        $_update = $this->_conn->prepare("UPDATE users SET password=? WHERE user_id=?");
            if (!$_update){return FALSE;}
        $_update->bind_param("si",$this->_new_password_enc,$_SESSION["user_id"]);
        $_update->execute();
        $_update->free_result();
        return TRUE;
    } // end makeChanges
    //============================================================================================================================================ Verifying Old Password
    private function verifyPassword(){
        $_verify = $this->_conn->prepare("SELECT role_id FROM users WHERE user_id=? AND password=? LIMIT 1");
        $_verify->bind_param("is",$_SESSION["user_id"],$this->_old_password_enc);
        $_verify->execute();
        $_verify->bind_result($_fetched_result);
        $_verify->fetch();
        $_verify->free_result();
        return ($_fetched_result) ? TRUE : FALSE;
    } // end verifyPassword
} // end class ChangePassword
if (isset($_POST["q"]) AND $_POST["q"] == 1){
    $_ChangePassword = new ChangePassword($_POST["old_password"],$_POST["new_password_1"],$_POST["new_password_2"]);
    if (count($_ChangePassword->_errors)){echo $_ChangePassword->returnErrors();}
    else {
        echo "Success changing password.";
    } // end else
} // end if ?>

接下来是我的DataProcessor类：

<?php
abstract class DataProcessor {
    public $_conn;              // database connection
    public $_access;            // whether or not the user has access
    public $_errors = array();  // class-generated errors
    //============================================================================================================================================ Returning a String of All Errors
    public function returnErrors(){
        $_error_string = "";
        foreach ($this->_errors as $_error){$_error_string .= $_error;}
        return $_error_string;
    } // end returnErrors
} // end abstract class DataProcessor ?>

最后，我的AJAX代码：

var request;
prepareAJAX();
function prepareAJAX(){
request = new XMLHttpRequest();
} // end prepareAJAX
function submitChangePassword(){
var old_password   = document.getElementById("cp_old_password").value;
var new_password_1 = document.getElementById("cp_new_password_1").value;
var new_password_2 = document.getElementById("cp_new_password_2").value;
var vars           = "q=1&old_password="+old_password+"&new_password_1="+new_password_1+"&new_password_2="+new_password_2;
request.open("POST","../classes/class.ChangePassword.php");
request.setRequestHeader("Content-type","application/x-www-form-urlencoded");
request.onreadystatechange = function(){
    if (request.readyState == 4 && request.status == 200){
        var return_data = request.responseText;
        alert(return_data);
        var type = (return_data.charAt(0) == "1") ? "error" : "success";
        lightboxNotice("cp",type,return_data);
    } // end if
} // end function
request.send(vars);
} // end submitChangePassword
function lightboxNotice(prefix,type,message){
switch(type){
    case "error":
        document.getElementById(prefix+"_lightbox_notice").className = "ligthbox_notice lightbox_error";
        break;
    case "message":
        document.getElementById(prefix+"_lightbox_notice").className = "ligthbox_notice lightbox_message";
        break;
    case "success":
        document.getElementById(prefix+"_lightbox_notice").className = "ligthbox_notice lightbox_success";
        break;
} // end switch
document.getElementById(prefix+"_lightbox_notice").style.display    = "block";
document.getElementById(prefix+"_lightbox_notice").style.visibility = "visible";
document.getElementById(prefix+"_lightbox_notice").style.opacity    = 1;
printNotice(prefix,type,message);
} // end lightboxNotice
function printNotice(prefix,type,message){
switch(type){
    case "error":
        document.getElementById(prefix+"_notice").className = "notice_error";
        break;
    case "message":
        document.getElementById(prefix+"_notice").className = "notice_message";
        break;
    case "success":
        document.getElementById(prefix+"_notice").className = "notice_success";
        break;
} // end switch
document.getElementById(prefix+"_notice").style.display    = "block";
document.getElementById(prefix+"_notice").style.visibility = "visible";
document.getElementById(prefix+"_notice").style.opacity    = 1;
document.getElementById(prefix+"_notice").innerHTML        = message;
} // end printError

Answer 1

如果它只是空格，为什么不使用trim()?

你也应该修剪javascript

if (request.readyState == 4 && request.status == 200){
        var return_data = request.responseText;
        return_data = return_data.trim()

PHP Extra空格？

1 个答案: