mysql_list_dbs
(PHP 4, PHP 5)
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. Alternatives to this function include:
- SQL Query:
SHOW DATABASES
Description
$link_identifier = NULL): resourceReturns a result pointer containing the databases available from the current mysql daemon.
Parameters
-
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_WARNINGlevel error is generated.
Return Values
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().
Examples
Example #1 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
Notes
Note:
For backward compatibility, the following deprecated alias may be used: mysql_listdbs()
See Also
- mysql_db_name() - Retrieves database name from the call to mysql_list_dbs
- mysql_select_db() - Select a MySQL database
