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utf2html.php
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executable file
·121 lines (106 loc) · 3.99 KB
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<?PHP
/**
* 根据网页的HTML内容提取网页的 Encoding
*
* 浏览器以HEADER中的CHARSET为主，META中次一级，但是HEADER中的编码格式大多是
* 服务器默认的编码，并不一定是网页中被指定的编码，所以一般META中的编码是准确的
*
* 1.从$_response_body中获取
* 2.如果为空，则从$_response_header中获取 Content-Type: text/plain; charset=utf-8
* 3.如果依然为空，最后自动识别字串的编码，但是偏差很大，不建议采用
*
*/
header("Content-type: text/html; charset=utf-8");
$url = 'http://cn.yahoo.com';
$response = httpget($url);
@list($header, $body) = explode("\r\n\r\n", $response, 2);
$_response_headers = header2arr($header);
if(!empty($body)){
$charset = preg_match("/<meta.+?charset=[^\w]?([-\w]+)/i", $body, $temp) ? strtolower($temp[1]):"";
# $title = preg_match("/<title>(.*)<\/title>/isU",$_response_body,$temp) ? $temp[1]:"";
}elseif(isset($_response_headers['content-type']) and strpos($_response_headers['content-type'], 'charset')){
list($mime_type, $charset) = explode(';', str_replace('', '', strtolower($_response_headers['content-type'])), 2);
$charset = str_replace('charset=', '', $charset);
}else{
$charset = mb_detect_encoding($body, array("ASCII", "GB2312", "GBK", "UTF-8"));
}
if(strtolower($charset) !== 'utf-8'){
$body = mb_convert_encoding($body, 'utf-8', $charset);
}
$body = utf2html($body);
echo $body;
# UTF8转成HTML实体
function utf2html($str)
{
$ret = "";
$max = strlen($str);
$last = 0;
for($i = 0;$i < $max;$i++){
$c = $str{$i};
$c1 = ord($c);
if($c1 >> 5 == 6){
$ret .= substr($str, $last, $i - $last);
$c1 &= 31; #remove the 3bit two bytes prefix
$c2 = ord($str{++$i});
$c2 &= 63;
$c2 |= (($c1 & 3) << 6);
$c1 >>= 2;
$ret .= "&#" . ($c1 * 0x100 + $c2) . ";";
$last = $i + 1;
}
elseif($c1 >> 4 == 14){
$ret .= substr($str, $last, $i - $last);
$c2 = ord($str{++$i});
$c3 = ord($str{++$i});
$c1 &= 15;
$c2 &= 63;
$c3 &= 63;
$c3 |= (($c2 & 3) << 6);
$c2 >>= 2;
$c2 |= (($c1 & 15) << 4);
$c1 >>= 4;
$ret .= '&#' . (($c1 * 0x10000) + ($c2 * 0x100) + $c3) . ';';
$last = $i + 1;
}
}
$str = $ret . substr($str, $last, $i);
return $str;
}
# JSencode 格式化字符串
function addJsSlashes($str, $flag)
{
if($flag){
$str = addcslashes($str, "\0..\006\010..\012\014..\037\042\047\134\177..\377");
}else{
$str = addcslashes($str, "\0..\006\010..\012\014..\037\042\047\134");
}
return str_replace(array(chr(7), chr(11)), array('\007', '\013'), $str);
}
function header2arr($header){
$header = explode("\r\n", $header);
$num = count($header);
$_response_headers = array();
for($i = 0;$i < $num;$i++){
@list($name, $value) = explode(':', $header[$i], 2);
$name = trim($name);
$_response_headers = $_response_headers + array(strtolower($name) => trim($value));
}
return $_response_headers;
}
function httpget($url){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, TRUE); //表示需要responseheader
curl_setopt($ch, CURLOPT_NOBODY, FALSE); //表示需要responsebody
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_AUTOREFERER, TRUE);
curl_setopt($ch, CURLOPT_TIMEOUT, 120);
$response = curl_exec($ch);
if(curl_getinfo($ch, CURLINFO_HTTP_CODE) == '200'){
return $response;
}
else return NULL;
curl_close($ch);
}