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具体分析PHP获得所有数据库方法

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Release: 2016-06-13 11:11:54
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要查询系统中都存在哪些数据库,可使用mysql_list_dbs()函数,其语法格式如下:

resource mysql_list_dbs ([ resource $link_identifier ] )

mysql_list_dbs()函数返回的结果集中包含了MySQL服务器中所有的数据库,PHP获得所有数据库示例如下:

  1.  ?php  
  2. $connection=mysql_connect("localhost","root"
    ,"root") or die("连接服务器失败");  
  3. $db_list = mysql_list_dbs($connection);  
  4. while ($row = mysql_fetch_object
    ($db_list)) {  
  5. echo $row->Database . " br>";  
  6. echo " hr>";  
  7. }  
  8. mysql_close($connection);  
  9. ?> 

在上面PHP获得所有数据库代码中,循环输出结果集时用到了mysql_fetch_object()函数,mysql_fetch_object()函数和mysql_fetch_array()函数用法类似,不同的是 mysql_fetch_array()函数返回一个数组,而mysql_fetch_object()函数则返回一个对象。 mysql_fetch_object()函数的语法格式如下:

object mysql_fetch_object ( resource $result )


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