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PHP4与MySQL数据库操作函数详解(四)

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Release: 2016-06-21 09:02:29
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      .数据库级database的操作函数(2)
  
  1
mysql_create_db()
  
格式:int mysql_create_db(string database name , int link_identifier);
  
  
通过程序来建立1个数据库database,当然你也可以用mysql_query()或者mysql_db_query()函数来建立或删除database
  
  
但我们可以用这个函数更为方便地建立1database
  
成功返回1个真值,失败,则返回1false
  
  
例子:
  
  php
  
  $connect = mysql_connect("$hostname","$user","$pwd");
  $create = mysql_create_db("dbtest" , $connect);
  if($create) echo "create database dbtest successed!";
  else echo "create database dbtest failed!";
  
  ?>
  
  
  2
mysql_drop_db()
  
格式:int mysql_drop_db(string database name , int link_identifier);
  
  
通过程序来删除1个数据库database
  
  
但我们可以用这个函数更为方便地删除1database
  
成功返回1个真值,失败,则返回1false
  
  
例子:
  
  php
  
  $connect = mysql_connect("$hostname","$user","$pwd");
  $create = mysql_drop_db("dbtest" , $connect);
  if($create) echo "drop database dbtest successed!";
  else echo "drop database dbtest failed!";
  
  ?>
  
  
  
  Note :
如用mysql_query()mysql_db_query(),则SQL语句应为:
  (1)create database dbtest
  (2)drop database dbtest
  
  



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