如何不用htmlentities（）转换某些符号？

Question

How can I 'ask' htmlentities() not to convert certain symbols? For instance,

php,

<?php echo htmlentities(file_get_contents('fonts.css'),ENT_QUOTES);?>

fonts.css,

@font-face {
    font-family: 'ChunkFiveRoman';
    src: url('chunkfive-webfont.eot'); /* EOT file for IE */
    src: local('☺'), url('chunkfive-webfont.ttf') format('truetype'); /* TTF file for CSS3 browsers */
}

result,

@font-face {
    font-family: 'ChunkFiveRoman';
    src: url('chunkfive-webfont.eot'); /* EOT file for IE */
    src: local('�'), url('chunkfive-webfont.ttf') format('truetype'); /* TTF file for CSS3 browsers */
}

I want to keep '☺' as it is but not to convert it into 'â�º'.

Is it possible?

Answer 1

Use the third parameter of htmlentities. It specifies the charset:

<?php echo htmlentities(file_get_contents('fonts.css'),ENT_QUOTES,"UTF-8");?>

This avoids the smiley to be converted into Latin-1 byte equivalents. (Which is what it looks like.)