如何正确地转换它。// Based on Article http://stackoverflow.com/questions/11309194/php-domdocument-failing-to-handle-utf-8-characters/11310258#11310258
$searchPage = mb_convert_encoding($html,"HTML-ENTITIES","GBK")
The **compare-on-binary way** is **NOT semantically-correct**GROUP BY BINARY CASE WHEN BINARY `城市` = BINARY '北京 ' THEN '北京111' ELSE `城市` ENDCREATE TABLE `中文测试表1` (