Some problems of addslashes

As for the wide-byte injection, someone wrote it, and I don't write more:

Https://www.91ri.org/8611.html

Http://netsecurity.51cto.com/art/201404/435379_4.htm

For the Iconv () function, I tried to write a URL-encoding conversion for UTF-8 and GBK

Import os,urllibprint "" "If u want change gbk to utf-8,please input  gbk,so as input utf-8.input exit and exit,others make u try  agin "" "St = raw_input () DEF UTF8CWGBK (ST):     if st==" Utf-8 ":         print  "Input string"          url1 = raw_input ()         st1 =  Urllib.unquote (URL1)         st2 = st1.decode ("Utf-8"). Encode ("GBK")         url2 = urllib.quote (ST2)          print  "" "Utf-8 URL encoding---GBK URL encoding---utf-8 Kanji---gbk kanji" ""          PRINT URL1, '---', url2, '---', st1, '---',st2         os.system ('Pause ')     if st== "GBK":        print  " Input string "        url1 = raw_input ()          st1 = urllib.unquote (URL1)          st2 = st1.decode ("GBK"). Encode ("Utf-8")          Url2 = urllib.quote (ST2)         print  "" " Utf-8 URL encoding---GBK URL encoding---utf-8 Kanji---gbk kanji "" "        PRINT URL1, '---', url2, '---', st2, '---', st1        os.system (' pause ')      if st== "Exit":         os.system (' exit ')      else:        print "" "Please try again.if u  want change gbk To utf-8,please input gbk,else input utf8,finally input exit "" "         st = raw_input ()          UTF8CWGBK (ST) if __name__== "__main__":     UTF8CWGBK (ST)

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Some problems of addslashes