php表单输入存在数据库 php输出数据库

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PHP，如何表单保存到数据库并且显示

首先可以采用的是Jquery的Ajax技术进行操作。

思路是这样的php表单输入存在数据库，首先现在前端判断JS并提交给后台php表单输入存在数据库，代码如下：

$(function(){

$.ajax({

type:post,

dataType:json,

url: save.php,

data:$("input[name=x]").val(),

success:function(data){

}

});

这样后端接收到Ajax请求后进行连接数据库并且插入数据

其它操作类似进行操作即可。

相关问答

Q1: php表单写入mysql数据库的代码

!--表单文件php表单输入存在数据库，拷入index.php--

!DOCTYPE html

html

head

style

label{display:inline-block;width:100px;margin-bottom:10px;}

/style

titleAdd students/title

/head

body

!-- 数据库用mysqli 面向过程调用方法--

form method="post" action="write2db.php"

!--数据库用mysqli 面向过程调用方法

form method="post" action="write2db_sqlio.php"

!--数据库用PDO调用方法

form method="post" action="write2db_pdo.php"

labelFirst Name/label

input type="text" name="first_name" /

br /

labelLast Name/label

input type="text" name="last_name" /

br /

labeldepartment/label

input type="text" name="department" /

br /

labelEmail/label

input type="text" name="email" /

br /

input type="submit" value="Add students"

/form

/body

/html

------------------------------

?php

//拷贝命名为write2db.php,数据库用mysqli 面向过程调用方法

//print_r($_POST);

// create a variable

$first_name=$_POST['first_name'];

$last_name=$_POST['last_name'];

$department=$_POST['department'];

$email=$_POST['email'];

//调试用

echo "Your input: ";

echo $first_name;

echo 'br /';

echo $last_name;

echo 'br /';

echo $department;

echo 'br /';

echo $email;

echo 'br /';

$servername = "localhost";

//Your database username and password

//$username = "username";

//$password = "password";

$username = "tester";

$password = "testerPassword";

//your database name

$dbname = "test";

$tablename ="student";

// Create connection

$connect = mysqli_connect($servername, $username, $password, $dbname);

if (!$connect) {

die("Connection failed: " . mysqli_connect_error());

}

//Execute the query

$sql="INSERT INTO $tablename (first_name,last_name,department,email)

VALUES('$first_name','$last_name','$department','$email')";

if (mysqli_query($connect, $sql)) {

echo "Hooray! New record is inserted to database successfully. Please check database.";

} else {

echo "Error: " . $sql . "br /" . mysqli_error($connect);

}

mysqli_close($connect);

?php

//拷贝命名为write2db_sqlio.php,数据库用mysqli 面向对象调用方法

//print_r($_POST);

// create a variable

$first_name=$_POST['first_name'];

$last_name=$_POST['last_name'];

$department=$_POST['department'];

$email=$_POST['email'];

//调试用

echo "Your input: ";

echo $first_name;

echo 'br /';

echo $last_name;

echo 'br /';

echo $department;

echo 'br /';

echo $email;

echo 'br /';

$servername = "localhost";

//Your database username and password

//$username = "username";

//$password = "password";

$username = "tester";

$password = "testerPassword";

//database name

$dbname = "test";

$tablename ="student";

// Create connection

$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection

if ($conn-connect_error) {

die("Connection failed: " . $conn-connect_error);

}

$sql="INSERT INTO $tablename (first_name,last_name,department,email)

VALUES('$first_name','$last_name','$department','$email')";

if ($conn-query($sql) === TRUE) {

echo "New record created successfully";

} else {

echo "Error: " . $sql . "br" . $conn-error;

}

$conn-close();

?php

//拷贝为文件write2db_pdo.php,数据库用PDO调用方法

//print_r($_POST);

a variable

$first_name=$_POST['first_name'];

$last_name=$_POST['last_name'];

$department=$_POST['department'];

$email=$_POST['email'];

//调试用

echo "Your input: ";

echo $first_name;

echo 'br /';

echo $last_name;

echo 'br /';

echo $department;

echo 'br /';

echo $email;

echo 'br /';

$servername = "localhost";

//Your database username and password

//$username = "username";

//$password = "password";

$username = "tester";

$password = "testerPassword";

//your database name

$dbname = "test";

$tablename ="student";

// Create connection

try {

$conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);

// set the PDO error mode to exception

$conn-setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

$sql="INSERT INTO $tablename (first_name,last_name,department,email)

VALUES('$first_name','$last_name','$department','$email')";

// use exec()

$conn-exec($sql);

echo "New record created successfully";

}

catch(PDOException $e)

{

echo $sql . "br" . $e-getMessage();

}

$conn = null;

--创建数据库test, 将此文件存为test.sql 导入数据库php表单输入存在数据库，或者手动创建表结构

-- phpMyAdmin SQL Dump

-- version 4.7.4

-- Host: 127.0.0.1:3306

-- Generation Time: Mar 12, 2018 at 04:04 AM

-- Server version: 5.7.19

-- PHP Version: 7.1.9

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";

SET AUTOCOMMIT = 0;

START TRANSACTION;

SET time_zone = "+00:00";

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;

/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;

/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;

/*!40101 SET NAMES utf8mb4 */;

-- Database: `test`

-- --------------------------------------------------------

-- Table structure for table `student`

DROP TABLE IF EXISTS `student`;

CREATE TABLE IF NOT EXISTS `student` (

`id` tinyint(3) UNSIGNED NOT NULL AUTO_INCREMENT,

`first_name` varchar(20) NOT NULL,

`last_name` varchar(20) NOT NULL,

`department` varchar(50) NOT NULL,

`email` varchar(50) NOT NULL,

PRIMARY KEY (`id`)

) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

-- Dumping data for table `student`

INSERT INTO `student` (`id`, `first_name`, `last_name`, `department`, `email`) VALUES

(1, 'first1', 'last1', 'cs', '1985@qq.com');

COMMIT;

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;

/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;

/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

Q2: PHP TP3.2怎样将表单数据保存到数据库中

1、将php安装目录下php表单输入存在数据库的php_mysql.dll和MySQL安装目录下php表单输入存在数据库的libmysql.dll文件拷贝至c:/windows/system32中；

2、配置php.ini

extension=php_gd2.dll

extension=php_mbstring.dll

extension=php_mysql.dll

extension=php_mysqli.dll

把上面四个。dll的最前面的；去掉

二、php表单提交至数据库的实现过程

1、login.php页面

SPAN style="FONT-SIZE: 14px"html

FORM method=post action=add.php

Name: INPUT name=usernameBR

Email: INPUT name=emailBR

INPUT value=提交 type=submit name=submit

/FORM

/SPAN

2、add.php页面

SPAN style="FONT-SIZE: 14px"?php

include（"conn.php"）；

?php

if（isset（$_POST["submit"]））

{

$sql = "insert into users（username, email） values（'$_POST[username]', '$_POST[email]'）";

mysqli_query（$conn, $sql）；

echo "添加成功";

}

?/SPAN

3、conn.php页面

SPAN style="FONT-SIZE: 14px"?php

$conn = new mysqli（"localhost", "root", "159357"）；

$conn-select_db（"db_test"）；

//mysql_query（"set name 'gb2312'"）；

$conn-set_charset（"utf8"）；

?/SPAN

Q3: php怎样验证表单文本区域内容是否已存在数据库中？

方法：查询数据，若数据存在则输出（前端这个要自己写，我只写了一个echo）

代码如下：

//$conn = new mysqli($sql_server_name, $sql_username, $sql_password, $sql_db);

$timu = $_GET["timu"];

$sql = $conn-query("查询 * from problems where timu

='". $timu . "'"); // 从problems库里查注意把“查询”改成“select”，因为百度知道会屏蔽sql语句

if (mysqli_fetch_assoc($sql) 0) {

echo "已存在";

} else {

echo "不存在";

}

Q4: php插入数据到数据库表单

表单应该使用名字，例如：

form action=xxx.php method=post

select name="select1"

option value="1" selected="selected"男/option

option value="0"女/option

/select

/form

这样，在xxx.php里面使用$_POST['select1']获取结果。

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PHP，如何表单保存到数据库并且显示

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