PHP解析html类库simple_html_dom的转码bug
这几天有在用simple_html_dom抓一些文章。不同网站的编码在国内基本上是gbk gb2312 utf-8。而以gb2312和utf-8居多。
我这一版的simple_html_dom有一个方法 convert_text 是这个样子的。
代码如下:
// PaperG - Function to convert the text from one character set to another if the two sets are not the same. function convert_text($text) { global $debug_object; if (is_object($debug_object)) {$debug_object->debug_log_entry(1);} $converted_text = $text; $sourceCharset = ""; $targetCharset = ""; if ($this->dom) { $sourceCharset = strtoupper($this->dom->_charset); $targetCharset = strtoupper($this->dom->_target_charset); } if (is_object($debug_object)) {$debug_object->debug_log(3, "source charset: " . $sourceCharset . " target charaset: " . $targetCharset);} if (!empty($sourceCharset) && !empty($targetCharset) && (strcasecmp($sourceCharset, $targetCharset) != 0)) { // Check if the reported encoding could have been incorrect and the text is actually already UTF-8 if ((strcasecmp($targetCharset, 'UTF-8') == 0) && ($this->is_utf8($text))) { $converted_text = $text; } else { $converted_text = iconv($sourceCharset, $targetCharset, $text); } } // Lets make sure that we don't have that silly BOM issue with any of the utf-8 text we output. if ($targetCharset == 'UTF-8') { if (substr($converted_text, 0, 3) == "\xef\xbb\xbf") { $converted_text = substr($converted_text, 3); } if (substr($converted_text, -3) == "\xef\xbb\xbf") { $converted_text = substr($converted_text, 0, -3); } } return $converted_text; }
来看这一行:
代码如下:
$converted_text = iconv($sourceCharset, $targetCharset, $text);
会引起转码不正确。比如会把gb2312的文字转成:
代码如下:
4月26日在<span style="color:#C03"></span>公园马术场举行的2014浪琴国际马联场地障碍世界杯中国联赛资格赛上,24岁的韩壮壮不仅拿到零罚分的成绩 ...第7个出场的<span style="color:#C03">浜</span>奥运骑手赵志文第一个收获零罚分,用时77秒07 ...
既成的事实了,证明里头的转码功能没有处理好。由于我使用这个simple_html_dom只是想要用来构建dom。我并没有打算花时间去很好地处理这个bug。而是简单地把
代码如下:
$converted_text = iconv($sourceCharset, $targetCharset, $text);
改成
代码如下:
$converted_text = $text;
就行了。思路就是取消它的转码。好吧工作不必纠结,可以继续了。
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