php 记住用户名

php 中如何记住用户名和密码呢?

前台页面:

?前台html代码如下:

<div class="yhxx">
                        <div>
                              <label>
                              <span class="wz">用户名:</span>
							  <span class="wb">
                                <input type="text" name="user" value="" class="text">
                                                              </span>
                              </label>
                        
                         </div>
              <div><label><span class="wz">密码:</span>                            
                                <span class="wb"> <input type="password" name="password" class="text" onfocus="passwordFocus();">
                              </span></label>
                          
                          </div>
                            <div id="remember_pass_div" style="height: 20px">
                                <!-- 记住密码 -->
                                <label> <input class="checkbox2" value="remember_pass" name="remember_pass" style="margin-right: 5px;" type="checkbox" label="记住密码" checked="checked">
                                <span class="checkbox2 cannot_select" style="margin-right: 40px;">记住密码</span>
                                </label>
                                <!-- 自动登录 -->
                                <label> <input class="checkbox2" value="auto_login" name="auto_login" style="margin-right: 5px;" type="checkbox" label="自动登录" onclick="dealAutoSubmit(this);">
                                <span class="checkbox2 cannot_select">自动登录</span>
                                </label>
                            </div>
                            
                         <div style="display:none">                            
                           <table width="100%" border="0" cellspacing="0" cellpadding="0">
                              <tbody><tr>
                                <td style="width:60px;"><span class="wz"> 验证码:</span></td>
                                <td style=" text-align:left!important; text-align:center; width:130px;"><label><span class="wb"><input type="text" name="yzm" class="text3">&nbsp;</span></label>
                                </td>
                                <td valign="middle">
                                <img onclick="get_randfunc(this);" style="padding-top:3px; cursor:pointer;" src="../includes/rand_func.php">
                            </td>
                             </tr>
                           </tbody></table>
                         </div>
                        </div>

?

提交之后,在后台进行如下处理

接收前台提交的参数:

	$user=trim($_POST["user"]);
        $old_password=trim($_POST["password"]);

?如果记住用户名,则保存用户到cookie中:

 $cookie_timeout=time()+3600*24*365;
            if(!empty($_POST["remember_pass"]))
            {
                setcookie("username", $user,$cookie_timeout );
                setcookie("password", $old_password, $cookie_timeout);
                setcookie("remember_pass", true, $cookie_timeout);
//                echo "记住我";
            }else{
//                echo "不记住";
                setcookie("username", null, $cookie_timeout);
                setcookie("password", null, $cookie_timeout);
                setcookie("remember_pass", null, $cookie_timeout);
            }
            if(!empty($_POST["auto_login"]))
            {
                setcookie("auto_login", true, $cookie_timeout);
            }else{
                setcookie("auto_login", null, $cookie_timeout);
            }

?

下次登录时,先从cookie获取用户和密码:

 //获取cookie
            var username="<?php echo $_COOKIE[‘username‘] ?>";
            var password="<?php echo $_COOKIE[‘password‘] ?>";
            var remember_pass="<?php echo $_COOKIE[‘remember_pass‘] ?>";
            var auto_login="<?php echo $_COOKIE[‘auto_login‘] ?>";
            if(com.whuang.hsj.isHasValue(remember_pass) && remember_pass==1){//是否记住密码
                if(com.whuang.hsj.isHasValue(username)){//cookie中的用户名不为空
                    var usernameObj=com.whuang.hsj.$$one(‘user‘);
                    usernameObj.value=username;
                }
                if(com.whuang.hsj.isHasValue(password)){//cookie中的密码不为空
                    var passwordObj=com.whuang.hsj.$$one(‘password‘);
                    passwordObj.value=password;
                }
                $(‘div input[name=remember_pass]‘).attr("checked",‘true‘);
            }else{
                $(‘div input[name=remember_pass]‘).attr("checked",null);
            }
            if(com.whuang.hsj.isHasValue(auto_login) && auto_login==1){//是否自动登录
                $(‘div input[name=remember_pass]‘).attr("checked",‘true‘);
                $(‘div input[name=auto_login]‘).attr("checked",‘true‘);
//                document.forms[0].submit();
                timingLogin=setTimeout(function(){document.forms[0].submit();},2000);//1秒钟之后自动登录
            }

?依赖的js方法:

 var dealAutoSubmit=function(this22){
            var isChecked=com.whuang.hsj.isCheckcheckbox(this22);
            // console.log(isChecked);
            if(isChecked){
                if(!com.whuang.hsj.isCheckcheckbox("remember_pass")){
                    com.whuang.hsj.setCheckedCheckboxOne("remember_pass");
                }

            }
        }
/******************************
 * select the single checkbox
 */
com.whuang.hsj.setCheckedCheckboxOne = function(checkbox2233) {
	if (typeof checkbox2233 == ‘string‘) {
		checkbox2233 = com.whuang.hsj.$$one(checkbox2233);
		if(checkbox2233==null ||checkbox2233==undefined){
			checkbox2233=com.whuang.hsj.$$id(checkbox2233);
		}
	}
	checkbox2233.checked = true;
};

/***
 * if is radio ,please use com.whuang.hsj.$$arr
 * @param name22
 * @returns
 */
com.whuang.hsj.$$one = function(name22) {
	if (com.whuang.hsj.isHasValue(name22)) {
		var names222=document.getElementsByName(name22);
		//alert("names222:"+names222);
		//alert("typeof:"+(typeof names222 ));
		var className=Object.prototype.toString.call(names222);
		var boolean_isArray;
		var ieHtmlCollection=‘[object HTMLCollection]‘;
		if(isIEtest)//if browser is IE
		{
                 boolean_isArray=( className=== ‘[object Object]‘) ||(className=== ieHtmlCollection) ||names222 instanceof Array ;
		}else
		{
                 boolean_isArray=( className=== ‘[object Array]‘) ||(className=== ‘[object NodeList]‘  )||(className==ieHtmlCollection)||names222 instanceof Array||names222 instanceof NodeList;
		}
		if(names222){
             if(boolean_isArray){
                     return names222[0];
             }else{
                     return names222;//why add [0] ??
			}
		}else{
			return "";
		}
	} else {
		return "";
	}
};

?

说明:

com.whuang.hsj.isHasValue 是js方法,用于判断是否有值