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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>";
?>
PHP经典项目案例-（一）博客管理系统4
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