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数据库有很多种类：mysql，oracle，mssql，db2等等。PHP操作数据库的时候，要保证该类型数据库的扩展已开启。这里连接的数据库以mysql为例：?php
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//数据库服务器地址
$host="localhost";
//连接数据库用户名
$uname="root";
//连接数据库密码
$upass="";
//连接数据库
$conn=mysql_connect($host, $uname,$upass);
//判断连接
if(!$conn){
die("连接数据库失败！").mysql_errno();
}
//连接成功，其他操作省略
?
PHP连接数据库之PHP连接MYSQL数据库代码
?php
$mysql_server_name='localhost';
//改成自己的mysql数据库服务器
$mysql_username='root';
//改成自己的mysql数据库用户名
$mysql_password='12345678';
//改成自己的mysql数据库密码
$mysql_database='mycounter';
//改成自己的mysql数据库名
$conn=mysql_connect($mysql_server_name,
$mysql_username,$mysql_password,
$mysql_database);
$sql='CREATE DATABASE mycounter
DEFAULT CHARACTER SET gbk COLLATE gbk_chinese_ci;
';
mysql_query($sql);
$sql='CREATE TABLE `counter`
(`id` INT(255) UNSIGNED NOT NULL
AUTO_INCREMENT ,`count` INT(255)
UNSIGNED NOT NULL DEFAULT 0,PRIMARY KEY
( `id` ) ) TYPE = innodb;';
mysql_select_db($mysql_database,$conn);
$result=mysql_query($sql);
//echo $sql;
mysql_close($conn);
echo "Hello!数据库mycounter已经成功建立！";
?
PHP连接数据库之PHP连接ACCESS数据库代码方法
?
$conn = new com("ADODB.Connection");
$connstr = "DRIVER={Microsoft
Access Driver (*.mdb)};
DBQ=". realpath("data/db.mdb");
$conn-Open($connstr);
$rs = new com("ADODB.RecordSet");
$rs-Open("select *
from szd_t",$conn,1,1);
while(! $rs-eof) {
$f = $rs-Fields(1);
echo $f-value;
$rs-MoveNext();
}
?
php学生管理系统源码，供大家参考，具体内容如下
功能：
1.添加／删除／修改
2.数据存储.
界面分布：
index.php
---主界面
add.php ---stu添加
action --- sql中add/del/update
(处理html表单--mysql的数据存储 ＆＆ 页面跳转)
edit.php ---stu修改
menu.php
--首页
1. index.php
!DOCTYPE html
html lang="en"
head
meta charset="UTF-8"
title学生信息管理/title
script
function doDel(id) {
if(confirm('确认删除?')) {
window.location='action.php?action=delid='+id;
}
}
/script
/head
body
center
?php
include ("menu.php");
?
h3浏览学生信息/h3
table width="500" border="1"
tr
thID/th
th姓名/th
th性别/th
th年龄/th
th班级/th
th操作/th
/tr
?php
// 1. 链接数据库
try{
$pdo = new PDO("uri:mysqlPdo.ini","root","1");
}catch (PDOException $e) {
die('connection failed'.$e-getMessage());
}
//2.执行sql
$sql_select = "select * from stu";
//3.data 解析
foreach ( $pdo-query($sql_select) as $row) {
echo "tr";
echo "th{$row['id']} /th";
echo "th{$row['name']}/th";
echo "th{$row['sex']} /th";
echo "th{$row['age']} /th";
echo "th{$row['classid']}/th";
echo "td
a href='edit.php?id={$row['id']}'修改/a
a href='javascript:void(0);' onclick='doDel({$row['id']})'删除/a
/td";
echo "/tr";
}
?
/table
/center
/body
/html
2. add.php
!DOCTYPE html
html lang="en"
head
meta charset="UTF-8"
title学生管理系统/title
/head
body
center
?php include ('menu.php'); ?
h3增加学生信息/h3
form action="action.php?action=add" method="post"
table
tr
td姓名/td
tdinput type="text" name="name"/td
/tr
tr
td年龄/td
tdinput type="text" name="age"/td
/tr
tr
td性别/td
tdinput type="radio" name="sex" value="男"男/td
tdinput type="radio" name="sex" value="女"女/td
/tr
tr
td班级/td
tdinput type="text" name="classid"/td
/tr
tr
!-- td /td--
tda href="index.php"返回/td
tdinput type="submit" value="添加"/td
tdinput type="reset" value="重置"/td
/tr
/table
/form
/center
/body
/html
3. action.php
?php
/**
* Created by PhpStorm.
* User: hyh
* Date: 16-7-7
* Time: 下午9:37
*/
//1. 链接数据库
try{
$pdo = new PDO("uri:mysqlPdo.ini","root","1");
}catch (PDOException $e) {
// echo 'Connection failed: ' . $e-getMessage();
die('connection failed'.$e-getMessage());
}
//2.action 的值做对操作
switch ($_GET['action']){
case 'add'://add
$name = $_POST['name'];
$sex = $_POST['sex'];
$age = $_POST['age'];
$classid = $_POST['classid'];
$sql = "insert into stu (name, sex, age, classid) values ('{$name}', '{$sex}','{$age}','{$classid}')";
$rw = $pdo-exec($sql);
if ($rw 0){
echo "scriptalter('添加成功');/script";
}else{
echo "scriptalter('添加失败');/script";
}
header('Location: index.php');
break;
case 'del'://get
$id = $_GET['id'];
$sql = "delete from stu where id={$id}";
$rw = $pdo-exec($sql);
if ($rw 0){
echo "scriptalter('删除成功');/script";
}else{
echo "scriptalter('删除失败');/script";
}
header('Location: index.php');
break;
case 'edit'://post
$id = $_POST['id'];
$name = $_POST['name'];
$age = $_POST['age'];
$classid = $_POST['classid'];
$sex = $_POST['sex'];
// echo $id, $age, $age, $name;
$sql = "update stu set name='{$name}', age={$age},sex='{$sex}',classid={$classid} where id={$id};";
// $sql = "update myapp.stu set name='jike',sex='女', age=24,classid=44 where id=17";
print $sql;
$rw = $pdo-exec($sql);
if ($rw 0){
echo "scriptalter('更新成功');/script";
}else{
echo "scriptalter('更新失败');/script";
}
header('Location: index.php');
break;
default:
header('Location: index.php');
break;
}
4.edit.php
!DOCTYPE html
html lang="en"
head
meta charset="UTF-8"
title学生管理系统/title
/head
body
center
?php include ('menu.php');
//1. 链接数据库
try{
$pdo = new PDO("uri:mysqlPdo.ini","root","1");
}catch (PDOException $e) {
die('connection failed'.$e-getMessage());
}
//2.执行sql
$sql_select = "select * from stu where id={$_GET['id']}";
$stmt = $pdo-query($sql_select);
if ($stmt-rowCount() 0) {
$stu = $stmt-fetch(PDO::FETCH_ASSOC); // 解析数据
}else{
die("no have this id:{$_GET['id']}");
}
?
h3修改学生信息/h3
form action="action.php?action=edit" method="post"
input type="hidden" name="id" value="?php echo $stu['id'];?"
table
tr
td姓名/td
tdinput type="text" name="name" value="?php echo $stu['name'];?"/td
/tr
tr
td年龄/td
tdinput type="text" name="age" value="?php echo $stu['age'];?"/td
/tr
tr
td性别/td
td
input type="radio" name="sex" value="男" ?php echo ($stu['sex'] == "男")? "checked":"";? 男
/td
td
input type="radio" name="sex" value="女" ?php echo ($stu['sex'] == "女")? "checked":"";? 女
/td
/tr
tr
td班级/td
tdinput type="text" name="classid" value="?php echo $stu['classid']?"/td
/tr
tr
td /td
tdinput type="submit" value="更新"/td
tdinput type="reset" value="重置"/td
/tr
/table
/form
/center
?php
?
/body
/html
5. menu.php
!DOCTYPE html
html lang="en"
body
h2学生管理系统/h2
a href="index.php" 浏览学生/a
a href="add.php" 添加学生/a
hr
/body
/html