PHP 5.4.45 Released

mysql_list_dbs

(PHP 4, PHP 5)

mysql_list_dbsList databases available on a MySQL server

Warning

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

Description

resource mysql_list_dbs ([ resource $link_identifier = NULL ] )

Returns 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() was called with no arguments. If no connection is found or established, an E_WARNING level 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

add a note add a note

User Contributed Notes 3 notes

up
1
busilezas at gmail dot com
6 months 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)) {
up
1
theriault
3 years ago
Another alternative to this function is:

SQL Query: SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA
up
0
matjung at hotmail dot com
5 years ago
The result pointer contains only the databases for which the mysql_user has the select priviledge granted.
To Top