php操作mysql总结

WBOY
Release: 2016-06-23 13:21:51
Original
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    $dbhost='localhost';
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    $dbuser='root';
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    $dbpass='123456';
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    $dbname='products';
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    $connect=mysql_connect($dbhost,$dbuser,$dbpass);
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    if(!$connect) exit('数据库连接失败!');
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    mysql_select_db($dbname,$connect);
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    mysql_query('set names utf8');
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    //查询
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    $sql="SELECT * FROM `category`";
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    $result=mysql_query($sql);
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    while($row=mysql_fetch_array($result)){
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        echo $row['id'];
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    }
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    //插入
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    $sql="INSERT INTO `category` (`id`,`name`) VALUES (NULL,'".$name."')";
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    $result=mysql_query($sql);
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    if(mysql_affected_rows()){
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        echo '插入成功,插入ID为:',mysql_insert_id();
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    }else{
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        echo '插入失败:',mysql_error();
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    }
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    //修改
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    $sql="UPDATE `category` SET `name`='".$name."' WHERE `id`='".$id."'";
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    $result=mysql_query($sql);
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    if(mysql_affected_rows()){
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        echo '修改成功!';
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    }
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    //删除
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    $sql="DELETE FROM `category` WHERE `id`='".$id."'";
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    $result=mysql_query($sql);
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    if(mysql_affected_rows()){
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        echo '删除成功!';
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    }
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    //关闭连接
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    mysql_close($connect);

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