How can I hide file names in PHP error pages? or Can I hide PHP keywords (include, mysql function names, ... ) in error pages?

or at least can I hide/change specific words in errors?

example errors:

Error: [2] include(file1.php) [function.include]: failed to open stream: No such file or directory

Error: [2] include() [function.include]: Failed opening 'file1.php' for inclusion (include_path='.;C:\php5\pear')


I will chose a best answer.

thanks in advance.