How to change file encoding to utf8 in php

How to change the file encoding to utf8 in php: first read the file into a string through the [file_get_contents] function; then convert the encoding of the string through the iconv method; and finally write the string into the file.

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php Convert File Encoding

    $contents_before = file_get_contents($input);
    $contents_after = iconv('UCS-2','UTF-8',$contents_before);
    file_put_contents($input, $contents_after);

Be careful after processing, The file $input has been changed.

The file_get_contents() function reads the entire file into a string.

iconv — The string is converted according to the required character encoding; the

file_put_contents() function writes a string to the file.

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