PHP解析html类库simple_html_dom的转码bug

　　// 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;

　　}

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

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

　　$converted_text = $text;