I was wondering if anyone knew of any good Boolean interpreters (NOT, AND, OR, +, -, |," ")? I've found three, but they're VERY buggy and I wouldn't put them into production. Frankly, I don't have the time, patience, or ability to write a good one from scratch. Here are the three I've found in case anyone's interested: http://www.evolt.org/article/Boolean_Fulltext_Searching_with_PHP_and_MyS QL/18/15665/index.html http://www.phpbuilder.com/snippet/detail.php?type=snippet <http://www.phpbuilder.com/snippet/detail.php?type=snippet&id=474> &id=474 http://sourceforge.net/projects/phpsqlbool/ Thanks to anyone and everyone! =)