PHP经典项目案例-(一)博客管理系统4

本篇使用Ajax实现页面无刷新验证用户名是否存在。

七、注册页面实现

1、注册页面设计

register.php部分代码:
<tr>
    <!-- 注册表 --> 
      <td colSpan=3 valign="baseline" style="BACKGROUND-IMAGE: url( images/bg.jpg); VERTICAL-ALIGN: middle; HEIGHT: 450px; TEXT-ALIGN: center"><br>
        <form  name="myform" action="register_deal.php" method="post"> 
          <table width="85%" border="1" align=center cellpadding=3 cellspacing=2 bordercolor="#FFFFFF" bgcolor="#FFFFFF" class=i_table> 
            <tr align="left" bgcolor="#EFF7DE"> 
              <td height=22 colspan=2 bgcolor="#EFF7DE" class=right_head><span class="tableBorder_LTR">必填内容</span></td> 
            </tr> 
            <tr bgcolor="#FFFFFF"> 
              <td width=22% align="right" valign=middle class='f_one'> 用户名</td> 
              <td width=78% align="left"  class='f_one'><input name='txt_regname' type=text id="txt_regname" value='' size=20 maxlength=14 onblur="javascript:chkUserName();"/> 
              <label id="l1">*</label><label id="ll1" class="label2"></label>
              </td> 
            </tr> 
            <tr bgcolor="#FFFFFF"> 
              <td align="right" valign=middle > 真实姓名</td> 
              <td align="left" > <input name='txt_regrealname' type='text' id="txt_regrealname" size='20' maxlength='75' onblur="javascript:chkRealName()"/>                
              <label id="l4">*</label><label id="ll4" class="label2"></label></td> 
            </tr> 
            <tr> 
            <tr bgcolor="#FFFFFF"> 
              <td align="right" valign=middle > 密码</td> 
              <td align="left"> <input name='txt_regpwd' type='password' id="txt_regpwd" size=20 maxlength=75 onblur="javascript:chkPwd();"/> 
              英文字母或数字等不少于3位<label id="l2">*</label><label id="ll2" class="label2"></label></td> 
            </tr> 
            <tr bgcolor="#FFFFFF"> 
              <td align="right" valign=middle> 确认密码</td> 
              <td align="left" > <input name='txt_regpwd2' type='password' id="txt_regpwd2" size=20 maxlength=75 onBlur="javascript:chkRePwd()"> 
              <label id="l3">*</label><label id="ll3" class="label2"></label></td> 
            </tr> 
            <tr bgcolor="#FFFFFF"> 
              <td align="right" > 出生日期</td> 
              <td align="left" > <span class="word_grey"> 
                <input name="txt_birthday" type="text" id="birth" onblur="javascript:chkBirth()"> 
              (日期格式为:yyyy-mm-dd)<label id="l6">*</label><label id="ll6" class="label2"></label></td> 
            </tr> 
            <tr bgcolor="#FFFFFF"> 
              <td align="right" valign=middle> Email</td> 
              <td align="left"  > <input name=txt_regemail type=text id="txt_regemail" value='' size=35 maxlength=75 onblur="javascript:chrEmail()"/> 
              <font color='#000000'>公开邮箱 <label id="l5">*</label><label id="ll5" class="label2"></label></td> 
            </tr> 
            <tr bgcolor="#FFFFFF"> 
              <td align="right">所在城市</td> 
              <td align="left">
                <select name="txt_province" id="txt_province" onchange="javascript:initcity();"> 
                  <SCRIPT>creatprovince();</SCRIPT> 
                </select> 
                <select name="txt_city" id="txt_city" > </select> 
              <font color="red">*</font> </td> 
            </tr> 
            <tr bgcolor="#FFFFFF"> 
              <td align="right" valign=middle  class='f_one'> 选择头像:</td> 
              <td align="left" class='f_one'><table width="106" cellpadding="0" cellspacing="0"> 
                  <tr> 
                    <td width="10" height="47">

					</td> 
                    <td width="80"><img src=" images/head/0.gif" name="img" id = "image" width="60" height="60"></td> 
                    <td width="53" rowspan="2" align="center"><font color=red>*</font></td> 
                  </tr> 
                  <tr> 
                    <td> </td> 
                    <td> <select name="txt_ico" size="1" id="txt_ico" onChange="javascript:showlogo()"> 
                        <option value="0.gif" selected>头像1
                        <option value="1.gif">头像2
                        <option value="2.gif">头像3
                        <option value="3.gif">头像4</option> 
                        <option value="4.gif">头像5</option> 
                        <option value="5.gif">头像6</option> 
                      </select> </td> 
                  </tr> 
              </table></td> 
            </tr> 
            <tr align="left" bgcolor="#EFF7DE"> 
              <td height=22 colspan=2 class=right_head><span class="tableBorder_LTR">选填内容</span></td> 
            </tr> 
            <tr bgcolor="#FFFFFF"> 
              <td align="right" class='f_one'> 性别</td> 
              <td align="left" class='f_one'> <select name=txt_regsex id="txt_regsex"> 
                  <OPTION value=1>男</OPTION> 
                  <OPTION value=2>女</OPTION> 
                  <OPTION value=0 selected>保密</OPTION> 
              </select></td> 
            </tr> 
            <tr bgcolor="#FFFFFF"> 
              <td align="right" class='f_one'>QQ</td> 
              <td align="left" class='f_one'><input name='txt_regqq' type=text id="txt_regqq" value='' size=20 maxlength=14></td> 
            </tr> 
            <tr bgcolor="#FFFFFF"> 
              <td align="right" class='f_one'> 个人主页</td> 
              <td align="left" class='f_one'> <input name='txt_reghomepage' type=text id="txt_reghomepage" value='' size=40 maxlength=75></td> 
            </tr> 
            <tr bgcolor="#FFFFFF"> 
              <td align="right" valign=middle class='f_one'>个性化签名</td> 
              <td align="left" class='f_one'><textarea name='txt_regsign' cols=50 rows='4' id="txt_regsign"></textarea></td> 
            </tr> 
            <tr bgcolor="#FFFFFF"> 
              <td align="right" class='f_one'> 自我简介</td> 
              <td align="left" class='f_one'><textarea name=txt_regintroduce cols=50 rows=4 id="txt_regintroduce"></textarea></td> 
            </tr> 
          </table> 
          <br> 
            <input type='submit' name='regsubmit' value='提 交'class="btn_grey" onClick="return check()">  
            <input name="reset" type="reset" class="btn_grey" value="重 填">
      </form>
      </td> 
    </tr> 

2、输入框失去焦点后调用的javascript函数实现:fun.js:

function chkUserName(){
	var c = document.getElementById('txt_regname');
	var d = c.value;
	var id;
	if(d==""){		
		document.getElementById('l1').innerText="请输入用户名";
		document.getElementById('ll1').innerText="";
	}else{
		var xmlObj;
		xmlObj = new XMLHttpRequest();	
		xmlObj.open('POST','chk.php?d='+d,true);
		xmlObj.onreadystatechange = callBackFun;
		xmlObj.send(null);
		function callBackFun() {
			if(xmlObj.readyState == 4&&xmlObj.status ==200){
				if(xmlObj.responseText=='y'){
					document.getElementById('l1').innerText="×";
					document.getElementById('ll1').innerText="";
				}else{
					document.getElementById('l1').innerText="";
					document.getElementById('ll1').innerText="√";
				}
			}
		}
	}
}
function chkRealName(){
	var c = document.getElementById('txt_regrealname');
	var d = c.value;
	if(d==""){		
		document.getElementById('l4').innerText="请输入真实姓名";
		document.getElementById('ll4').innerText="";
	}else{
		document.getElementById('l4').innerText="";
		document.getElementById('ll4').innerText="√";
	}
}
function chkPwd(){
	var p = document.getElementById('txt_regpwd').value;
	var c = document.getElementById('ll1').innerText;
	if(c=="√"){
		if(p==""){
			document.getElementById('l2').innerText="请输入密码";
		}
		else if(p.length<3){
		document.getElementById('l2').innerText="×";
		document.getElementById('ll2').innerText="";
		}else{
		document.getElementById('l2').innerText="";
		document.getElementById('ll2').innerText="√";
	    }
	}
}
function chkRePwd(){
	var p = document.getElementById('txt_regpwd').value;
	var rp = document.getElementById('txt_regpwd2').value;
	var c = document.getElementById('ll2').innerText;
	if(c=="√"){
	if(p==rp){
		document.getElementById('ll3').innerText="√";
		document.getElementById('l3').innerText="";
	}else{
		document.getElementById('ll3').innerText="";
		document.getElementById('l3').innerText="× 密码不一致";
	}
	}
}
function chkBirth(){
	var c = document.getElementById('birth');
	var d = c.value;
	if(d==""){		
		document.getElementById('l6').innerText="请输入出生日期";
		document.getElementById('ll6').innerText="";
	}else{
		document.getElementById('l6').innerText="";
		document.getElementById('ll6').innerText="√";

	}
}
function chkEmail(){
	var e = document.getElementById('txt_regemail').value;
	if(e==""){		
		document.getElementById('l5').innerText="请输入邮箱";
		document.getElementById('ll5').innerText="";
	}else{
		document.getElementById('l5').innerText="";
		document.getElementById('ll5').innerText="√";
	}
}

3、Ajax验证用户名使用的处理文件chk.php:

<?php
    require_once 'Conn/SqlHelper.class.php';
    $chk = $_REQUEST['d'];
    $sqlHelper = new SqlHelper();
    $sql = "select * from tb_user where regname='$chk';";
    $res = $sqlHelper->execute_dql($sql);
    $s = $res->fetch_assoc();
    if(count($s)!=0){
        echo 'y';
    }else{
        echo 'n';
    }

4、注册后将用户添加到数据库registerdeal.php

<?php
session_start();
include "Conn/SqlHelper.class.php";
$sqlHelper = new SqlHelper();
$UserName=$_POST['txt_regname'];
$sql="select * from tb_user where regname = '$UserName'";
$res = $sqlHelper->execute_dql($sql);
$result=$res->fetch_assoc();
if (count($result)!=0){
	echo ("<script>alert('用户名已被注册!');history.go(-1);</script>");
	exit();
}
$_SESSION['username']=$_POST['txt_regname'];
$regname=$_POST['txt_regname'];
$regrealname=$_POST['txt_regrealname'];
$regpwd=$_POST['txt_regpwd'];
$regbirthday=$_POST['txt_birthday'];
$regemail=$_POST['txt_regemail'];
$regcity=$_POST['txt_province'].$_POST['txt_city'];
$regico=$_POST['txt_ico'];
$regsex=$_POST['txt_regsex'];
$regqq=$_POST['txt_regqq'];
$reghomepage=$_POST['txt_reghomepage'];
$regsign=$_POST['txt_regsign'];
$regintroduce=$_POST['txt_regintroduce'];
$ip=getenv(REMOTE_ADDR);
$sql = "Insert Into tb_user (regname,regrealname,regpwd,regbirthday,regemail,regcity,regico,regsex,regqq,reghomepage,regsign,regintroduce,ip,fig)".
" Values ('$regname','$regrealname','$regpwd','$regbirthday','$regemail','$regcity','$regico','$regsex','$regqq','$reghomepage','$regsign','$regintroduce','$ip',0)";
$INS=$sqlHelper->execute_dml($sql);
echo "<script> alert('用户注册成功!');</script>";
echo "<script> window.location='index.php';</script>";
?>

至此,用户注册已经实现。

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