mysql_list_dbs
(PHP 4, PHP 5)
mysql_list_dbs — 列出 MySQL 服务器中所有的数据库
说明
mysql_list_dbs(resource
$link_identifier = ?): resourcemysql_list_dbs() 将返回一个结果指针，包含了当前 MySQL 进程中所有可用的数据库。用 mysql_tablename() 函数来遍历此结果指针，或者任何使用结果表的函数，例如 mysql_fetch_array()。
示例 #1 mysql_list_dbs() 例子
<?php
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
$db_list = mysql_list_dbs($link);
while ($row = mysql_fetch_object($db_list)) {
echo $row->Database . "\n";
}
?>
以上例子将产生如下输出：
database1 database2 database3 ...
注意:
以上代码用起来和 mysql_fetch_row() 或类似函数一样简单。
为向下兼容仍然可以使用 mysql_listdbs()，但反对这样做。
参见 mysql_db_name()。
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User Contributed Notes 4 notes
jeff at forerunnertv dot com ¶
2 years ago
There is no direct equivalent of mysql_list_dbs() as a mysqli_list_dbs() command, but you can query "show databases" instead.
So this:
$db_list = mysql_list_dbs($connect); //mysql
Is equivalent to this:
$db_list = mysqli_query($connect, "SHOW DATABASES"); //mysqli
matjung at hotmail dot com ¶
12 years ago
The result pointer contains only the databases for which the mysql_user has the select priviledge granted.
busilezas at gmail dot com ¶
7 years ago
The example is wrong in Spanish version.
ERROR: mysql_fetch_assoc() expects parameter 1 to be resource, null given in XXX on line 5
while ($fila = mysql_fetch_assoc($res)) {
OK.
while ($fila = mysql_fetch_assoc($resultado)) {
备份地址：http://www.lvesu.com/blog/php/function.mysql-list-dbs.php