How does PHP empty the varnish cache file?

function Clearvarnish ($ip, $url, $host =null) { $errstr = "; $errno = "; $varnist _arr = isset ($host)? $host: C (' varnish_list '); foreach ($varnist _arr as $v) { $fp = Fsockopen ($ip, $errno, $ERRSTR, 2); if (! $fp) { return false; } else { $out = "Purge.url $url \ r \ n"; Fputs ($fp, $out); $out = Fgets ($fp, 4096); Fclose ($FP); return $out; } } } ?> Copy Code Note that the incoming URL is not parameters, for example: Www.baidu.com/?tn=sougou because the purge.url after emptying the regular expression can be changed to www.baidu.com/(.?) Sougou can be. When a varnish cache multiple site content needs to clear the specified site URL or simply clear the site home page, you need to use purge instead of purge.url. 2. Code: function Varnish_purge ($ip, $host = ", $url) { $errstr = "; $errno = "; $fp = Fsockopen ($ip, $errno, $ERRSTR, 2); if (! $fp) { return $errno; }else { if (!empty ($host)) { $out = "purge Req.http.host = = {$host} && req.url ~ ^/$ \ r \ n"; }else{ $out = "Purge.url {$url} \ r \ n"; } Fputs ($fp, $out); $out = Fgets ($fp, 4096); Fclose ($FP); return $out; } } Copy Code

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