PHP面试题及答案(六)

1、使用php写一段简单查询，查出所有姓名为“张三”的内容并打印出来 表名User Name Tel Content Date 张三 13333663366 大专毕业 2006-10-11 张三 13612312331 本科毕业 2006-10-15 张四 021-55665566 中专毕业 2006-10-15 请根据上面的题目完成代码： $mysql_db = mysql_connect ( " local " , " root " , " pass " ); @ mysql_select_db ( " DB " , $mysql_db );   代码 drop   table   if   exists   user ; /* ============================================================== */ /*  Table: user                                                   */ /* ============================================================== */ create   table   user (     `Name`                            varchar ( 20 ),     Tel                             varchar ( 16 ),     Content                         varchar ( 255 ),     `Date`                           date ) insert   into   user (name,tel,content,`date`)  values ( ' 张三 ' , ' 13333663366 ' , ' 大专毕业 ' , ' 2006-10-11 ' ); insert   into   user (name,tel,content,`date`)  values ( ' 张三 ' , ' 13612312331 ' , ' 本科毕业 ' , ' 2006-10-15 ' ); insert   into   user (name,tel,content,`date`)  values ( ' 张四 ' , ' 021-55665566 ' , ' 中专毕业 ' , ' 2006-10-1 ' ); select   *   from   user   where  name = ' 张三 ' ;   代码 <? php header ( " content-type:text/html; charset=gbk " );  $mysql_db = mysql_connect ( " localhost " , " root " , "" ); @ mysql_select_db ( " phpinterview " , $mysql_db ); echo   " <table> " ; mysql_query ( " set names gbk " ); $result = mysql_query ( " select Name,Tel,Content,Date from user where Name='张三' " ) or  die ( " 错误： " . mysql_error ()); while ( $row = mysql_fetch_array ( $result , MYSQL_BOTH)) {       echo   " <tr><td> " . $row [ " Name " ] . " </td><td> " . $row [ " Tel " ] . " </td><td> " .       $row [ " Content " ] . " </td><td> " . $row [ " Date " ] . " </td></tr> " ; } mysql_free_result ( $result ); echo   " </table> " ?>   3、如何使用下面的类,并解释下面什么意思? class test{     function Get_test($num){     $num=md5(md5($num)."En");     return $num;     } } <? php /* * * 使用md5加密数据... * */ class  test{       function  Get_test( $num ){           $num = md5 ( md5 ( $num ) . " En " );           return   $num ;      } } $a = new  test(); echo   $a -> Get_test( " 123 " ); ?>   4、用javascipt打印 “上海爱吉” < html > < head >< title > JS打印 </ title ></ head > < body > < script  type ="text/javascript" >      document.write( " 上海吉它 " ); </ script > </ body > </ html >   5、写出 SQL语句的格式 : 插入 ，更新 ，删除 代码 select  expression from  tablename where  condition group   by  columns  asc   with  rollup order   by   column   asc limit offset, rowcount ; insert   into  tablename(columname)  values ( exp ); update  tablename  set  columnname = exp   where  condition  order   by   column  limit  rowcount ; delete   from  tablename  where  condition  order   by   column  limit  rowcount ;