a. If you want to use gb2312, php should output header: header(” Content-Type: text/html; charset=gb2312”), static page added < meta http-equiv=“Content-Type” content=“text/html; charset=gb2312” > , the encoding format of all files is ANSI, which can be opened by notepad and saved as ANSI, overwriting the source files.

b. If you want to use the utf-8 encoding, php should output the following header: header(” Content-Type: text/html; charset= utf-8 ”), static page added < meta http-equiv=“Content-Type” content=“text/html; charset=utf-8” > , all the files are encoded in utf-8.

Recently, it was necessary to use the iconv function to convert the captured utf-8 encoded page into gb2312, and it was found that only using the iconv function to transcode the captured data 1 would result in 1 less data for no reason. It made me depressed for a while. I checked the information on the Internet and realized that this is an bug of the iconv function. iconv makes an error converting the character ”—” to gb2312. The solution is simple: add “//IGNORE”, which is the second parameter of iconv function, after the code to be converted, as follows:

iconv(“UTF-8”,“GB2312//IGNORE”,$data)

ignore means to ignore conversion errors. Without the ignore parameter, all strings following this character cannot be saved.