Php function iconv interception error solution

Iconv function: required syntax for character encoding for conversion string: stringiconv (stringin_charset, stringout_charset, stringstr) when using this function for character encoding conversion, note that, if UTF-8 is converted to gb2312, the string may be truncated. In this case, the iconv function: Character encoding requirements for conversion strings
Syntax: string iconv (string in_charset, string out_charset, string str)

When using this function for string encoding conversion, note that if UTF-8 is converted to gb2312, the string may be truncated.

You can solve this problem by using the following methods:
$ Str = iconv (UTF-8, "gb2312 // transcoder", file_get_contents ($ filepath ));
That is, add the red part in the second parameter to indicate that if the character matching the source encoding cannot be found in the target encoding, a similar character will be selected for conversion.
You can also use the: // IGNORE parameter to IGNORE characters that cannot be converted.