Right Trim Comma

[PCHomepage]

How can I remove a right comma from a string? I would have expected to be able to use rtrim() (or even trim()) but nothing seems to happen and the comma remains:

echo rtrim($String, ',');

 

[PCHomepage]

I am answering my own question as the reason it won't trim is that it isn't the last character in the string - it has a blank space after it so this is what was needed:

echo rtrim($String, ', \t\n');

 

[jpadie]

use double quotes, not single.