[SOLVED] XML Encoding

[robbyc]

Hi

 

I have an XML document and have it stored as a DomDocument. My problem is I want to check that the header is

 

<?xml version="1.0" encoding="UTF-8"?>

 

if it isn't say for example it is <?xml version="1.0" encoding="ISO-8859-1"?> I want to strip the header off and change it to UTF. I believe this can be done with the aid of regular expressions but I have no idea.

 

Any help will be greatly appreciated

 

 

 

[effigy]

What if the file contains "high ascii" characters that need to be converted to UTF-8?

[robbyc]

Yeah that as well. I don't know too much about encodings so any help will be greatly appreciated.

 

My problem is I am processing xml feeds using php and some feeds that are encoded as ISO-8859-1 end up with symbols such as £ are scrambled.

 

 

[effigy]

Try something like this:

 

<pre>
<?php

// This is the original ISO-8859-1 file that would really be
// a file_get_contents for you (as long as the file isn't huge).
$data = '<?xml version="1.0" encoding="ISO-8859-1"?>' . "\n";
$data .= '<root><pound>£</pound></root>' . "\n";

echo htmlspecialchars($data);

// Convert to UTF-8.	
$data = utf8_encode($data);
// Change the literal encoding.
$data = preg_replace('/(<\?xml.+?encoding=")[^"]+(".*\?>)/', '\1UTF-8\2', $data);

echo htmlspecialchars($data);

?>
</pre>

[robbyc]

Thanks that works really well now thanks

 

 

[robbyc]

 

I slightly modified the code so that files already encoded as UTF-8 didn't get encoded again.

 

 
if(!preg_match('/(<\?xml.+?encoding=")UTF-8(".*\?>)/', $contents))
{
// Convert to UTF-8.	
$contents = utf8_encode($contents);
// Change the literal encoding.
$contents = preg_replace('/(<\?xml.+?encoding=")[^"]+(".*\?>)/', '\1UTF-8\2', $contents);
}

return $contents;

 

The problem is

preg_match('/(<\?xml.+?encoding=")UTF-8(".*\?>)/', $contents)

only matches uppercase UTF-8 how do I change the regular expression to also check for utf-8.

 

Thanks

[effigy]

Make it case insensitive by adding the "i" modifier:

 

/pattern/i