On the PHP multi-character set encoding vulnerability research-exploit warning-the black bar safety net

| First, do an experiment,in the local environment in the establishment of such a php file ? php header"Content-Type:text/html;Charset=gb2312"; echo $GET"str"; echi "br/"; echo addslashes$GET"str"; ?& gt; Here my php environment has opened the Magicquotesgpc,contemporary code inside also made to...