Hi. Assuming TIS-620 is all single-byte as shown
here try using the following in the config.php file:
PHP Code:
define('PHPDIG_ENCODING','tis-620');
// give functions something trivial to do
$phpdig_string_subst['tis-620'] = 'Q:Q,q:q';
// remove word wrapping in the below line
$phpdig_words_chars['tis-620'] = '[:alnum:]¡¢£¤¥¦§¨©ª«¬_®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÜß*áâãäåæçèéêëì*îïðñòóôõö÷øùúû';