PHP code sharing for calculating the size of mysql database

This article mainly shares with you the method of calculating the size of the entire mysql database in PHP. Here, the calculation results are returned in the format of MB, KB or GB. Hope it helps everyone.

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 &#39;".$tname."&#39;");
    $data = mysql_fetch_array($r);
    $size += ($data[&#39;Index_length&#39;] + $data[&#39;Data_length&#39;]);
  };
  $units = array(&#39; B&#39;, &#39; KB&#39;, &#39; MB&#39;, &#39; GB&#39;, &#39; TB&#39;);
  for ($i = 0; $size > 1024; $i++) { $size /= 1024; }
  return round($size, 2).$units[$i];
}
/*
** Example:
*/
// open mysql connection:
$handle = mysql_connect(&#39;localhost&#39;, &#39;user&#39;, &#39;password&#39;);
if (!$handle) { die(&#39;Connection failed!&#39;); }
// get the size of all tables in this database:
print CalcFullDatabaseSize(&#39;customer1234&#39;, $handle);
// --> returns something like: 484.2 KB
// close connection:
mysql_close($handle);

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