cache to minimize SQL queries in modlog

mod.php

@@ -296,6 +296,12 @@
 						'<th>' . _('Action') . '</th>' . 
 					'</tr>';
 				while($log = $query->fetch()) {
+					$log_id = 'log_' . md5($log['text']);
+					
+					if($_log = cache::get($log_id))
+						$log['text'] = $_log;
+					else {
+					
 						$log['text'] = utf8tohtml($log['text']);
 						$log['text'] = preg_replace('/(\d+\.\d+\.\d+\.\d+)/', '<a href="?/IP/$1">$1</a>', $log['text']);
 					
@@ -314,6 +320,9 @@
 												sprintf($config['file_page'], $post['thread']) . '#' . $match[1]
 											: sprintf($config['file_page'], $match[1])) .
 										'">$0</a>', $log['text']);
+								
+									cache::set($log_id, $log['text']);
+								}
 							}
 						}
 					}