Converting extended ASCII characters (128-159) into HTML entities?

PHP
1

How does one convert extended ASCII characters, codes 128+, into HTML entities? I tried the following:

for($i=0;$i<=255;$i++){
	echo "$i: ".htmlentities(chr($i))."<br />\
";
}

However for character codes 128 to 159, I got funny characters as output instead of an HTML entity.

2

The output probably just looks funny because your page encoding isn’t set correctly. Add a <meta> tag with encoding=utf8 and refresh.

3

I added an

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

Tag, but I still get the funny characters.

But I don’t think that should be the issue anyway - I’d like for instance the chr(128) character to be encoded as the entity “€”. But the funny characters are present in the source code for the page too, and not the entity.

4

“Extended ASCII” is vague. The characters that aren’t working are actually in Microsoft’s cp1252/Windows-1252 charset, so you need to pass “cp1252” for the charset parameter to htmlentities(). By default, htmlentities() uses “ISO-8859-1,” which is without Microsoft’s extensions (the characters that you are having issues with). Both cp1252 and ISO-8859-1 can be considered “extended ASCII,” and arguably many more charsets can be too.

5

Thanks - that seems to have done the trick :slight_smile:

for($i=0;$i<=255;$i++){
	echo "$i: ".htmlentities(chr($i), ENT_QUOTES, 'cp1252')."<br />\
";
}