Show MySQL Database size

SELECT table_schema "Data Base Name",
sum( data_length + index_length ) / 1024 /
1024 "Data Base Size in MB",
sum( data_free )/ 1024 / 1024 "Free Space in MB"
FROM information_schema.TABLES
GROUP BY table_schema ;

<html><head><title>mysql database size</title></head><body>
<h1>mysql database size</h1>
<?php
function file_size_info($filesize) {
 $bytes = array('KB', 'KB', 'MB', 'GB', 'TB'); # values are always displayed
 if ($filesize < 1024) $filesize = 1; # in at least kilobytes.
 for ($i = 0; $filesize > 1024; $i++) $filesize /= 1024;
 $file_size_info['size'] = ceil($filesize);
 $file_size_info['type'] = $bytes[$i];
 return $file_size_info;
}
$db_server = 'put your server here';
$db_user = 'put your mysql user here';
$db_pwd = 'put your password here';
$db_name = 'put your db name here';
$db_link = @mysql_connect($db_server, $db_user, $db_pwd)
 or exit('Could not connect: ' . mysql_error());
$db = @mysql_select_db($db_name, $db_link)
 or exit('Could not select database: ' . mysql_error());
// Calculate DB size by adding table size + index size:
$rows = mysql_query("SHOW TABLE STATUS");
$dbsize = 0;
while ($row = mysql_fetch_array($rows)) {
 $dbsize += $row['Data_length'] + $row['Index_length'];
}
print "database size is: $dbsize bytes<br />";
print 'or<br />';
$dbsize = file_size_info($dbsize);
print "database size is: {$dbsize['size']} {$dbsize['type']}";
?>
</body></html>