PHP character transcoding solves the problem of garbled data crawled by Sina-PHP Tutorial-php.cn

PHP character transcoding solves the problem of garbled data crawled by Sina

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Release： 2016-07-25 08:53:37

Original

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function unescape($str) {
$str = rawurldecode($str);
preg_match_all("/(?:%u.{4})|.+/",$str ,$r);
$ar = $r[0];
foreach($ar as $k=>$v) {
if(substr($v,0,2) == '%u' && strlen ($v) == 6)
$ar[$k] = iconv("UCS-2","utf-8",pack("H4",substr($v,-4)));
}
return join("",$ar);
}

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has a little problem, so I changed it to another function, which seems to be more powerful.

function unescape($str) {
$str = rawurldecode($str);
preg_match_all("/%u.{4}|&#x.{4};|& #d+;|&#d+?|.+/U",$str,$r);
$ar = $r[0];
foreach($ar as $k=>$v) {
if( substr($v,0,2) == "%u")
$ar[$k] = iconv("UCS-2","utf-8",pack("H4",substr($v,- 4)));
elseif(substr($v,0,3) == "")
$ar[$k] = iconv("UCS-2","utf-8",pack(" H4",substr($v,3,-1)));
elseif(substr($v,0,2) == "") {
$ar[$k] = iconv("UCS-2 ","utf-8",pack("n",preg_replace("/[^d]/","",$v)));
}
}
return join("",$ar);
}

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After using it for a while, I found that it can be used locally, but not in our online environment. Online is *nux, local is XP, and the PHP version is different. Later, I found a similar function in the manual It also supports utf8. I personally think it should be more versatile.