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使用php4加速网络传输
标 题: 使用php4加速网络传输。<? /*************************************** ** Title.........: PHP4 HTTP Compression Speeds up the Web ** Version.......: 1.10 ** Author........: catoc <catoc@163.net> ** Filename......: gzdoc.php ** Last changed..: 25/08/2000 ** Requirments...: PHP4 >= 4.0.1 **;PHP was configured with --with-zlib[=DIR] ** Notes.........: Dynamic Content Acceleration compresses **;the data transmission data on the fly **;code by sun jin hu (catoc) <catoc@163.net> **;Most newer browsers since 1998/1999 have **;been equipped to support the HTTP 1.1 **;standard known as "content-encoding." **;Essentially the browser indicates to the **;server that it can accept "content encoding" **;and if the server is capable it will then **;compress the data and transmit it. The **;browser decompresses it and then renders **;the page. ** Useage........: **;No space before the beginning of the first '<?' tag . **;------------Start of file---------- **;|<? **;| include('gzdoc.php'); **;| print "Start output !!"**;|?> **;|<HTML> **;|... the page ... **;|</HTML> **;|<? **;| gzdocout(); **;|?> **;-------------End of file----------- ***************************************/ ob_start(); ob_implicit_flush(0); function GetHeader(){ $headers = getallheaders(); while (list($header, $value) = each($headers)) { $Message .= "$header: $value<br> "} return $Message; } function CheckCanGzip(){ global $HTTP_ACCEPT_ENCODING, $PHP_SELF, $Wget, $REMOTE_ADDR,;;$S_UserName; if (connection_timeout() || connection_aborted()){ return 0; } if ((strpos('catoc'.$HTTP_ACCEPT_ENCODING, 'gzip')) || $Wget = = 'Y'){ if (strpos('catoc'.$HTTP_ACCEPT_ENCODING, 'x-gzip')){ $ENCODING = "x-gzip"$Error_Msg = str_replace('<br>','',GetHeader() ); $Error_Msg .= "Time: ".date("Y-m-d H:i:s")." "$Error_Msg .= "Remote-Address: ".$REMOTE_ADDR. " "//mail('your@none.net', "User have x-gzip outp ut in file $PHP_SELF!!!", $Error_Msg); }else{ $ENCODING = "gzip"} return $ENCODING; }else{ return 0; } } function GzDocOut(){ global $PHP_SELF, $CatocGz, $REMOTE_ADDR, $S_UserName; $ENCODING = CheckCanGzip(); if ($ENCODING){ print " <!-- Use compress $ENCODING --> "$Contents = ob_get_contents(); ob_end_clean(); if ($CatocGz == 'Y'){ print "Not compress lenth: ".strlen($Contents) ."<BR>"print "Compressed lenth: ".strlen(gzcompress($ Contents))."<BR>"exit; }else{ header("Content-Encoding: $ENCODING"); } print pack('cccccccc',0x1f,0x8b,0x08,0x00,0x00,0x00,0x 00,0x00); $Size = strlen($Contents); $Crc = crc32($Contents); $Contents = gzcompress($Contents); $Contents = substr($Contents, 0, strlen($Contents) - 4 ); print $Contents; print pack('V',$Crc); print pack('V',$Size); exit; }else{ ob_end_flush(); $Error_Msg = str_replace('<br>','',GetHeader()); $Error_Msg .= "Time: ".date("Y-m-d H:i:s")." "$Error_Msg .= "Remote-Address: ".$REMOTE_ADDR." "//mail('your@none.net', "User can not use gzip output;;in file $PHP_SELF!!!", $Error_Msg); exit; } } ?>
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