Backend DevelopmentPHP TutorialAjax and PHP regular expression validation form and verification code
Pattern matching character:
\: Escape character For example: \b escapes b
^: Regular expression start symbol
$: regular expression end symbol
*: matches the previous character appearing 0 or n times
+: matches the previous character appearing 1 or n times
?: Matches the previous character 0 or 1 times
.: Matches all single characters except newlines
|: or means, for example, x|y matches x or y
{n}: matches the first n characters
{n,m}: matches at least n up to m previous characters
[xyz]: matches any character in the brackets
[^xyz]: matches any character except the brackets Characters are equivalent to [0-9]
\w: Match any number or letter or underscore, which is equivalent to [A-Za-z0-9_]
\d: Match any number between 0--9
Pattern modifier:
i: Ignore case
Examples of commonly used regular expressions:
//The user name consists of 6-18 digits of alphanumeric characters and underscores, and cannot begin with a number
var r_name=/^[a-z]\w {5,17}$/i
//The password length cannot be less than six characters
var r_pwd=/^\w{6,}$/
//All general email addresses
var r_eamil=/^\w+@\w+(\.)\w+$/
//Match a QQ email address
//861745122@qq.com
var r_qq_email=/^\d{5,}@qq(\.)com$/
//Match a 163 email address
var r_163_email=/^\w+@163(\.)com$/
//Match A suffix might be .com|.net|.cn|.edu
var email=/^\w+@\w+(\.)com|net|cn|edu$/
//Requires a valid age group
var r_age=/^\d{1,2}$/
//if (age>=18&&age《=100)
//Verify mobile phone number: 11 digits starting with 13 15 18
var r_tel=/^1[3,5, 8]\d{9}$/
//Verify the 18-digit or 17-digit ID number plus an X
var r_s=/^\d{18 }|\d{17}x$/i
//Verify Chinese var reg=/^[\u4e00-\u9fa5]{2,17}$/
//php
$reg = "/^[\x{4e00}-\x{9fa5}]$/u"
<span style="font-size:24px;">下面是一个例子：</span>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
<title></title>
<script type="text/javascript" src="public.js"></script>
</head>
<body onload="yanzheng(this)">
<form method="post" action="info_2.php" onsubmit="return check_all()">
<table>
<tr>
<td colspan="2">账户基本信息</td>
</tr>
<tr>
<td>登录账号：</td>
<td><input type="text" name="zhanghao" onblur="check_zhanghao(this)"><span name="sp1"></span></td>
</tr>
<tr>
<td>昵称：</td>
<td><input type="text" name="nicheng" onblur="check_nicheng(this)"><span name="sp2"></span></td>
</tr>
<tr>
<td>性别：</td>
<td><input type="radio" name="sex" value="男"onclick="check_sex()">男
<input type="radio" name="sex" value="女"onclick="check_sex()">女
<span id="sp3"></span></td>
</tr>
<tr>
<td colspan="2">账户安全设置</td>
</tr>
<tr>
<td>登录密码：</td>
<td><input type="password" name="pwd" onblur="check_pwd(this)"><span name="sp4"></span></td>
</tr>
<tr>
<td>确认登录密码：</td>
<td><input type="password" name="repwd" onblur="check_repwd(this)"><span name="sp5"></span></td>
</tr>
<tr>
<td>真实姓名：</td>
<td><input type="text" name="username" onblur="check_username(this)"><span name="sp6"></span></td>
</tr>
<tr>
<td>身份证号：</td>
<td><input type="text" name="idcard" onblur="check_idcard(this)"><span name="sp7"></span></td>
</tr>
<tr>
<td>邮箱地址：</td>
<td><input type="text" name="email" onblur="check_email(this)"><span name="sp8"></span></td>
</tr>
<tr>
<td>验证码</td>
<td><input type="text" id="number" onblur="check_number()">
<input type="button" onclick="yanzheng()" value="获取验证码" >
<span id="sp10"></span>
<span id="sp9"></span>
</td>
</tr>
<tr>
<td></td>
<td><input type="submit" value="免费注册"></td>
</tr>
</table>
</form>
<script type="text/javascript">
//验证登录账号
function check_zhanghao(obj){
var sp1=$('sp1');
if(obj.value==''){
sp1.innerHTML='登录账号不能为空';
sp1.style.color='red';
return false;
}else{
var reg=/^\w{5,10}$/i;
if(reg.test(obj.value)){
sp1.innerHTML='正确';
sp1.style.color='green';
return true;
}else{
sp1.innerHTML='登录账号5-10字符';
sp1.style.color='red';
return false;
}
}return true;
}
//验证昵称
function check_nicheng(obj){
var sp2=$('sp2');
if(obj.value==''){
sp2.innerHTML='登录账号不能为空';
sp2.style.color='red';
return false;
}else{
var reg=/^\w{5,10}$/i;
if(reg.test(obj.value)){
sp2.innerHTML='正确';
sp2.style.color='green';
return true;
}else{
sp2.innerHTML='昵称5-10字符';
sp2.style.color='red';
return false;
}
}return true;
}
//验证密码
function check_pwd(obj2){
var sp4=$('sp4');
if(obj2.value==''){
sp4.innerHTML='密码不能为空';
sp4.style.color='red';
return false;
}else{
var reg=/^\w{6,}$/;
if(reg.test(obj2.value)){
sp4.innerHTML='正确';
sp4.style.color='green';
return true;
}else{
sp4.innerHTML='格式不正确';
sp4.style.color='red';
return false;
}
}return true;
}
//验证确认密码
function check_repwd(obj3){
var sp5=$('sp5');
var pwd=$('pwd');
var repwd=$('repwd');
if(obj3.value==''){
sp5.innerHTML='密码不能为空';
sp5.style.color='red';
return false;
}else{
if(obj3.value==pwd.value){
sp5.innerHTML='正确';
sp5.style.color='green';
return true;
}else{
sp5.innerHTML='确认密码和密码不一致';
sp5.style.color='red';
return false;
}
}return true;
}
//验证性别
num2=0;
function check_sex(){
var sex=document.getElementsByName('sex');
// var sp4=document.getElementById('sp4')
for(var i=0;i<sex.length;i++){
if(sex[i].checked==true){
num2=num2+1;
}
}
//alert(num2);
if(num2!=0){
sp3.innerHTML='√';
sp3.style.color='green';
return true;
}else{
sp3.innerHTML='性别不能为空';
sp3.style.color='red';
return false;
}
}
//验证姓名
function check_username(obj){
var sp6=$('sp6');
if(obj.value==""){
sp6.innerHTML='用户名不能为空';
sp6.style.color='red';
return false;
}else{
var reg=/^[\u4e00-\u9fa5]{2,3}$/;
if(!reg.test(obj.value)){
sp6.innerHTML='用户名应该2-3个汉字';
sp6.style.color='red';
return false;
}else{
sp6.innerHTML='√';
sp6.style.color='green';
return true;
}
}
return true;
}
//验证邮箱
function check_email(obj5){
var sp8=$('sp8');
if(obj5.value==''){
sp8.innerHTML='邮箱不能为空';
sp8.style.color='red';
return false;
}else{
var reg=/^(\w+@\w+(\.)com|net|cn)$/;
if(reg.test(obj5.value)){
sp8.innerHTML='正确';
sp8.style.color='green';
return true;
}else{
sp8.innerHTML='格式不正确';
sp8.style.color='red';
return false;
}return true;
}
}
//验证身份证号
function check_idcard(obj9){
var sp7=$('sp7');
if(obj9.value==''){
sp7.innerHTML='身份证号不能为空';
sp7.style.color='red';
return false;
}else{
var reg=/^\d{18}|\d{17}x$/i;
if(reg.test(obj9.value)){
sp7.innerHTML='正确';
sp7.style.color='green';
return true;
}else{
sp7.innerHTML='格式不正确';
sp7.style.color='red';
return false;
}return true;
}
}
//生成验证码
function yanzheng(){
var sp9=document.getElementById('sp9');
var str1="";
for(var i=1;i<=4;i++){
str1=str1+parseInt(Math.random()*10);
sp9.innerHTML=str1;
}
}
//验证验证码
function check_number(){
var number=document.getElementById('number').value
var sp10=document.getElementById('sp10')
var sp9=document.getElementById('sp9');
if(number==""){
sp10.innerHTML='验证码不能为空';
sp10.style.color='red';
return false;
}else{
if(number!=sp9.innerHTML){
sp10.innerHTML='验证码和你写的不一致';
sp10.style.color='red';
return false;
} else{
sp10.innerHTML='√';
sp10.style.color='green';
return true;}
return true;
}
}
function check_all(){
if(check_zhanghao($('zhanghao')) & check_nicheng($('nicheng')) & check_pwd($('pwd')) & check_repwd($('repwd')) & check_sex()& check_username($('username')) & check_idcard($('idcard')) &check_email($('email')) & check_number() ){
return true;}
else{ return false;}
}
</script>
</body>
</html>php regular verification
<?php
header("content-type:text/html;charset=utf8");
//var_dump($_POST);die;
//array(5) { ["uname"]=> string(9) "刘伟超" ["uqq"]=> string(10) "1111111111" ["uemail"]=> string(12) "66555@qq.com" ["utel"]=> string(11) "15863162320" ["uinfo"]=> string(48) "地方开始放假开放活动健康的话概括" }
empty($_POST["uname"])?$uname="":$uname=$_POST["uname"];
empty($_POST["uemail"])?$uemail="":$uemail=$_POST["uemail"];
empty($_POST["utel"])?$utel="":$utel=$_POST["utel"];
empty($_POST["uqq"])?$uqq="":$uqq=$_POST["uqq"];
empty($_POST["uinfo"])?$uinfo="":$uinfo=$_POST["uinfo"];
//验证姓名
$reg="/^[\x{4e00}-\x{9fa5}]{2,3}$/u";
if(!preg_match($reg,$uname)){
echo "用户名应该2-3个汉字";die;
//header("refresh:1;url=form.html");
}
//验证邮箱
$reg="/^(\w+@\w+(\.)com|net|cn)$/";
if(!preg_match($reg,$uemail)){
echo "邮箱必须含有@，且以com结尾";header("refresh:1;url=form.html"); die;
}
//验证座机号
$reg="/^\d{11}$/";
if(!preg_match($reg,$utel)){
echo "座机号以010-22222222格式";header("refresh:1;url=form.html"); die;
}
//验证QQ号
$reg="/^\d{5,11}$/";
if(!preg_match($reg,$uqq)){
echo "qq必须是5-11位纯数字";header("refresh:1;url=form.html"); die;
}
//验证简介
/*$reg="/^[\x{4e00}-\x{9fa5}]{10,100}\W+/u";
if(!preg_match($reg,$uinfo)){
echo "简介应该10-100个汉字";die;
//header("refresh:1;url=form.html");
}
*/
//连接数据库
$link=mysql_connect('127.0.0.1','root','root')or die("连接失败");
//选择数据库
mysql_select_db('kaoshi',$link);
//设置字符集
mysql_query("set names utf8");
//写sql语句
$sql="insert into zhuce(c_name,c_qq,c_email,c_tel,c_info) values('$uname','$uqq','$uemail','$utel','$uinfo')";
//echo $sql;die;
$rel=mysql_query($sql);
if($rel){
echo "注册成功";header("refresh:1;url=show.php");
}else{echo "注册失败";header("refresh:1;url=form.html");}
?>The above is the Ajax and PHP regular expression verification form and verification code introduced by the editor. I hope it will be helpful to you. If you have any questions, please leave me a message and the editor will reply to you in time. . I would also like to thank you all for your support of the PHP Chinese website!
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