MySQL and PHP
Copyright 1997-2021 the PHP Documentation Group.
mysql_list_dbs
List databases available on a MySQL server
This function was deprecated in PHP 5.4.0, and it and the entire original MySQL extension was removed in PHP 7.0.0. Instead, use either the actively developed MySQLi or PDO_MySQL extensions. See also the MySQL: choosing an API guide and its related FAQ entry for additional information. Alternatives to this function include:
SQL Query: SHOW DATABASES
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resource mysql_list_dbs(resource link_identifier= =NULL);
Returns a result pointer containing the databases available from the current mysql daemon.
link_identifier
The MySQL connection. If the link identifier is not
specified, the last link opened by
mysql_connect
is assumed. If no such link is found, it will try to
create one as if
mysql_connect
had been called with no arguments. If no connection is
found or established, an E_WARNING
level error is generated.
Returns a result pointer resource on success, or
false
on failure. Use the
mysql_tablename
function to traverse this result pointer, or any function for
result tables, such as
mysql_fetch_array
.
Example 6.39 mysql_list_dbs
example
<?php // Usage without mysql_list_dbs() $link = mysql_connect('localhost', 'mysql_user', 'mysql_password'); $res = mysql_query("SHOW DATABASES"); while ($row = mysql_fetch_assoc($res)) { echo $row['Database'] . "\n"; } // Deprecated as of PHP 5.4.0 $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"; } ?>
The above example will output something similar to:
database1 database2 database3
For backward compatibility, the following deprecated alias may
be used: mysql_listdbs
mysql_db_name
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mysql_select_db
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