1 cookie部分 2 1.setcookie("user","xiangzishi110",time()+3600);//设置user的变量,有效期为3600秒 3 2.setcookie("user","",time()-3600);//注销 4 3.$_COOKIE["user"];//调用 5 4 if(isset($_COOKIE["user"])){}//判断是否设置了user的cookie 6 7 session部分 8 1.<?php session_start();?>//在head前就需要调用session_start(); 9 2.$_SESSION["user"]; 10 3.if(isset($_SESSION["user"])){} 11 4.unset($_SESSION["user"]);//释放user的session 12 5.session_destroy();//彻底终结session 13 14 mysql语句 15 insert into article (title,content,id) value ('第一本',‘这个书很好看’,null) 16 select * from article order by id desc 17 delete from article where id=1 18 update article set title='第二本' where id=2 19 20 数据库操作 21 mysql_fetch_array 22 mysql_fetch_assoc 返回关联数组 23 mysql_num_rows($result) 返回查询结果条数 24 mysql_unbuffered_query() 25 mysql_query() 26 mysqli_real_escape_string( $link,$GET['username'] )