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php计算连接的mysql数据库的大小，用MB，KB或者GB的格式返回
- function CalcFullDatabaseSize($database, $db) {
-
- $tables = mysql_list_tables($database, $db);
- if (!$tables) { return -1; }
-
- $table_count = mysql_num_rows($tables);
- $size = 0;
-
- for ($i=0; $i < $table_count; $i++) {
- $tname = mysql_tablename($tables, $i);
- $r = mysql_query("SHOW TABLE STATUS FROM ".$database." LIKE '".$tname."'");
- $data = mysql_fetch_array($r);
- $size += ($data['Index_length'] + $data['Data_length']);
- };
-
- $units = array(' B', ' KB', ' MB', ' GB', ' TB');
- for ($i = 0; $size > 1024; $i++) { $size /= 1024; }
- return round($size, 2).$units[$i];
- }
-
-
- /*
- ** Example:
- */
-
- // open mysql connection:
- $handle = mysql_connect('localhost', 'user', 'password');
-
- if (!$handle) { die('Connection failed!'); }
-
- // get the size of all tables in this database:
- print CalcFullDatabaseSize('customer1234', $handle);
- // --> returns something like: 484.2 KB
-
- // close connection:
- mysql_close($handle);
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