PHP的采集插件simple_html_dom的转码bug

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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。

// 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, $targetCharset) != 0)){// Check if the reported encoding could have been incorrect and the text is actually already UTF-8if ((strcasecmp($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;}

很好这一行：

$converted_text = iconv($sourceCharset, $targetCharset, $text);

会引起转码不正确。比如会把gb2312的文字转成：

4月26日在<span style="color:#C03">鏈濋槼</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">鍖椾含</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

$converted_text = iconv($sourceCharset, $targetCharset, $text);

改成

$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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