/**
* determine if the string is composed only of ascii characters
*
* @param string $str input string
* @param boolean $utf8 attempt utf8 match on failure (default yes)
*
* @return boolean true if string is ascii
* @access public
* @static
*/
function isAscii($str, $utf8 = true)
{
$str = preg_replace('/\\s+/', '', $str);
// eliminate all white space from the string
/* FIXME: This is a pretty brutal hack to make utf8 and 8859-1 work.
*/
/* match low- or high-ascii characters */
if (preg_match('/[\\x00-\\x20]|[\\x7F-\\xFF]/', $str)) {
// || // low ascii characters
// preg_match( '/[\x7F-\xFF]/', $str ) ) { // high ascii characters
if ($utf8) {
/* if we did match, try for utf-8, or iso8859-1 */
return CRM_Utils_String::isUtf8($str);
} else {
return false;
}
}
return true;
}
