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名师互学网 > IT > 软件开发 > 后端开发 > PHP

使用 php4 加速 web 传输

PHP 更新时间: 发布时间: IT归档 最新发布 模块sitemap 名妆网 法律咨询 聚返吧 英语巴士网 伯小乐 网商动力

使用 php4 加速 web 传输


ob_start();
ob_implicit_flush(0);
function GetHeader(){
$headers = getallheaders();
while (list($header, $value) = each($headers)) {
$Message .= "$header: $value
n";
}
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('
','',GetHeader());
$Error_Msg .= "Time: ".date("Y-m-d H:i:s")."n";
$Error_Msg .= "Remote-Address: ".$REMOTE_ADDR."n";
//mail('your@none.net', "User have x-gzip output 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 "nn";
$Contents = ob_get_contents();
ob_end_clean();
if ($CatocGz == 'Y'){
print "Not compress lenth: ".strlen($Contents)."
";
print "Compressed lenth: ".strlen(gzcompress($Contents))."
";
exit;
}else{
header("Content-Encoding: $ENCODING");
}
print pack('cccccccc',0x1f,0x8b,0x08,0x00,0x00,0x00,0x00,0x00);
$Size = strlen($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('
','',GetHeader());
$Error_Msg .= "Time: ".date("Y-m-d H:i:s")."n";
$Error_Msg .= "Remote-Address: ".$REMOTE_ADDR."n";
//mail('your@none.net', "User can not use gzip output in file $PHP_SELF!!!", $Error_Msg);
exit;
}
}
?>
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