值得学习php面试题有答案

1、echo$today=date(Y-m-dh:i:s,(time()-86400);2、echo和在echo$today=date(Y-m-dh:i:s,(time()-86400);2、echo和在在在$a = $b = )、VSS（源代码管理器）$luokuanABCDEFG$n = /echo $newluokuan = for($i=$n;$i=0;$i-/$newluokuan.= $newluokuan.= mb_substr($luokuan,$i,1,utf-echo $luokuanABCDEFG$n = /echo $newluokuan = for($i=$n;$i=0;

2、$i-/$newluokuan.= $newluokuan.= mb_substr($luokuan,$i,1,utf-echo 2、使用连接（JOIN）来代替子查询(Sub-8、,UTF-8 8、,UTF-8 下一个汉字占 3 字节,GBK 下一个汉字占 = = var var = $a = $b = $b = what is o,unset($b)=var var = $a = $b = $b = what is o,unset($b)=is 1,先执行$b$a,$a+再进行,所以$b$x = what is 大,30大,3015.echo$_SERVERREMOTE_ADDRecho$_

3、SERVERSERVER_ADDR/id 文章 id content 文章内容 hits 点击量create(NOT title content ,)create (identity(1,1)content 文章内容 hits 点击量create(NOT title content ,)create (identity(1,1)not primarytitle content ,)comment_contentidcomment_contentidselect a.id,as replay from message a left join comment b on a.id=b.idgroup

4、 by order by replay (4) not null categroy_name varchar(40) not function _query(selectcategory_id,categroy_nameor die(Invalid query: (select name=category function _query(selectcategory_id,categroy_nameor die(Invalid query: (=$i;$j-$tmp = return $str = 6。=A 6。=A _start();（.inis1，强制 ID 必须以 _name()函数来修

5、改YY3-防止SQL注一般函数)byusernameSELECTusername,count(*)asnumFROMmembers by count(*) desc limit 105echo $max;_query(select$str.$rowurl.br ,$str.-_query(select$str.$rowurl.br ,$str.-7.echo 8%(-3)将输出 8.HTTP1.0401401 (Unauthorized/)401(SC_UNAUTHORIZED)时7.echo 8%(-3)将输出 8.HTTP1.0401401 (Unauthorized/)401(SC_UN

6、AUTHORIZED)时arsort-All errors and warnings, pported,except oflevelprivate protected construct 13.echo _SELF; echo 13.echo _SELF; echo 14.HTTP1.0401（4）；如果返回“找不到文件”的提示，则可用 header 函数，其语句为（5）。(4)(5) header(HTTP/1.0 404 Not Echo16Apachehttp.conf中首先要用语句（10）模块，然后再用语句（11）使得 Apache 把所有扩展名为(11) AddType applic

7、ation/x-source AddType application/x-5 4 3 17.includerequireserialize() 20.SQLLEFTJOINserialize() 20.SQLLEFTJOIN（16）(16)21.如果 (name)和学号和(17)selectname,count(score)m_scorefromtbl_userlefttbl_score on tbl_user.ID=tbl_score.ID group by 22.*while* param string * return function $files = if ( $handle = opendir($dir) )while ($file*while* param string * return function $files = if ( $handle = opendir($dir) )while ($file=readdir($handle)fals