Ajax and PHP regular expression validation form and verification code

高洛峰
Release: 2023-03-05 11:26:01
Original
1193 people have browsed it

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"

下面是一个例子:       
账户基本信息
登录账号:
昵称:
性别:
账户安全设置
登录密码:
确认登录密码:
真实姓名:
身份证号:
邮箱地址:
验证码
Copy after login

php regular verification

 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");} ?>
Copy after login

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!

For more articles related to Ajax and PHP regular expression verification forms and verification codes, please pay attention to the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!