【笔记】 mysql与php的连接以及非select的例子

conn.inc.php　　

<?php
    $link=mysql_connect("localhost","root","zp");
    if (!$link){
        echo "数据库连接失败";
        exit;
    }
    mysql_select_db("zp",$link);
?>

create.php

<?php
    require "conn.inc.php";
    
    $sql="CREATE TABLE if not exists shop(id int not null auto_increment,name varchar(50) not null default '' ,price double not null default '0',num int not null default '0',desn text,primary key(id),key(name,price))";
    
    $result=mysql_query($sql);
    
    if (!$resule){
        echo "ERROR ".mysql_errno()." :". mysql_error();
        exit;
    }
    
    mysql_close();
?>

update_*_set.php

<?php
    require "conn.inc.php";
    
    $sql="update shop set name='{$_GET["name"]}' where id>5";
    
    echo $sql."<br><br><br>";
    
    $result=mysql_query($sql);
    
    
    
    
    
    var_dump($result);
    if ($resule){
        echo "ERROR ".mysql_errno()." :". mysql_error();
        exit;
    }
    if (mysql_affected_rows()>0){
        echo "执行成功<br>";
    }else{
        echo "记录没有改变<br>";
    }
    echo "最后增长的ID是：".mysql_insert_id()."<br>";
    echo "影响的行数:".mysql_affected_rows()."<br><br><br>";
    
    mysql_close();
?>

delete.php

<?php
    require "conn.inc.php";
    
    $sql="delete from shop where id>5";
    
    echo $sql."<br><br><br>";
    
    $result=mysql_query($sql);
    
    
    
    
    
    var_dump($result);
    if ($resule){
        echo "ERROR ".mysql_errno()." :". mysql_error();
        exit;
    }
    if (mysql_affected_rows()>0){
        echo "执行成功<br>";
    }else{
        echo "记录没有改变<br>";
    }
    echo "最后增长的ID是：".mysql_insert_id()."<br>";
    echo "影响的行数:".mysql_affected_rows()."<br><br><br>";
    
    mysql_close();
?>

insert_into.php

<?php
    require "conn.inc.php";
    
    //$sql="insert into shop(name,price,num,desn) values('vv','12.34','21','this is test')";//程序员自定义
    $sql="insert into shop(name,price,num,desn) values('{$_GET["name"]}','{$_GET["price"]}','{$_GET["num"]}','{$_GET["desn"]}')";//php中传进来的参数
        //?name=abc&price=12.13&num=3&desn=this%20is%20www
    
    echo $sql."<br><br><br>";
    
    $result=mysql_query($sql);
    
    echo "最后增长的ID是：".mysql_insert_id()."<br>";
    echo "影响的行数:".mysql_affected_rows()."<br><br><br>";
    
    var_dump($result);
    if (!$resule){
        echo "ERROR ".mysql_errno()." :". mysql_error();
        exit;
    }
    
    
    mysql_close();
?>