Purge single site Redis cache in multisite setup

See PR: #122

Author: chandrapatel

redis-purger.php

@@ -672,12 +672,22 @@ function purge_on_check_ajax_referer( $action, $result )
 		function true_purge_all()
 		{
 			global $rt_wp_nginx_helper;
-			$prefix = substr($rt_wp_nginx_helper->options['redis_prefix'],0, -1);
-			$this->log( "* * * * *" );
-			$this->log( "* Purged Everything!" );
-			$this->log( "* * * * *" );
-			//delete_multi_keys("*");
-			delete_keys_by_wildcard($prefix."*");
+			$prefix = trim( $rt_wp_nginx_helper->options['redis_prefix'] );
+			
+			$this->log( '* * * * *' );
+			
+			// If Purge Cache link click from network admin then purge all
+			if( is_network_admin() ) {
+				delete_keys_by_wildcard( $prefix . '*' );
+				$this->log( '* Purged Everything! * ' );
+			} else { // Else purge only site specific cache
+				$parse = wp_parse_url( get_site_url() );
+				$parse['path'] = empty( $parse['path'] ) ? '/' : $parse['path'];
+				delete_keys_by_wildcard( $prefix . $parse['scheme'] . 'GET' . $parse['host'] . $parse['path'] . '*' );
+				$this->log( '* ' . get_site_url() . ' Purged! * ' );
+			}
+			
+			$this->log( '* * * * *' );
 		}
 
 		function purge_urls()
@@ -717,7 +727,7 @@ function purge_urls()
 						}
 					}
 				}
-                        }
+			}
 		}
 
 	}