Vider cache redis à la publicaiton

gistfile1.php

<?php

add_action ('save_post','purge_redis');
 
  function purge_redis (){
	include ('predis.php');
	$redis = new Predis\Client('');
	$domain = $_SERVER['HTTP_HOST'];
	$url = "http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
	$url = str_replace('?r=y', '', $url);
	$url = str_replace('?c=y', '', $url);
	$dkey = md5($domain);
	$ukey = md5($url);
	 if ($redis->exists($dkey)) {
	        $redis->del($dkey);
	        
	    } 	    
	
	}// fin fonction