.htaccess show 404, 403, 500, error pages via PHP

Question

How can I make .htaccess display errors from a PHP file? I mean when I search a non-existing file .htaccess should show me an error page from error.php, but error.php needs

Answer 1

//Custom 403 errors
ErrorDocument 403 your-path/403.php

//Custom 404 errors
ErrorDocument 404 your-path/404.php

//Custom 500 errors
ErrorDocument 500 your-path/500.php