WordPress MU由於每建立一個新的用戶都會自動建立十多張表,因此當註冊大量用戶的時候會建立非常多的表,引起系統的性能出現問題,我這裡寫了一段腳本,可以將WordPress MU中的不活動用戶(從沒有發布文章的用戶)進行刪除,以節約系統資源。 PHP腳本源代碼如下:
<?php
$mysql_host = "localhost";
$ mysql_user = "root";
$mysql_pass = "";
$mysql_db = "wordpress";
$mysql_mylink = mysql_connect($mysql_host, $mysql_user, $mysql_pass)
or die ("Cannot make the connection");
  ; mysql_select_db($mysql_db, $mysql_mylink)
or die ("Cannot connect to the database");
$ strsql="select * from wp_blogs where blog_id>2 ";
$rs_query = mysql_query($strsql);
$alls =mysql_num_rows($rs_query);
while (($RS = mysql_fetch_array($rs_query))) {
extract($RS);
$blogid=$RS["blog_id"];
$query2 = "select * from wp_".$blogid."_posts ";
$result = mysql_query($query2);
$num= mysql_num_rows ($result);
//print $num;
if ($num<=2) {
print " ;DROP TABLE IF EXISTS wp_".$blogid."_comments;";
print "DROP TABLE IF EXISTS wp_".$blogid."_links ;";
print "DROP TABLE IF EXISTS wp_".$blogid."_options ;";
print "DROP TABLE IF EXISTS wp_".$blogid."_postmeta ;";
print "DROP TABLE IF EXISTS wp_".$blogid."_posts ;";
print "DROP TABLE IF EXISTS wp_".$blogid."_terms ;";
print "DROP TABLE IF EXISTS wp_". $blogid."_term_relationships ;";
print "DROP TABLE IF EXISTS wp_".$blogid."_term_taxonomy ;";
print "DELETE from wp_blogs where blog_id=".$blogid.";";
}
}
mysql_close ();
?>
由此看出,WordPress MU使用起來實在不怎麼樣,多表結構設計的可能有問題,會帶來很多麻煩。
文章轉載月光博客