Parse names in PHP

nameparse.php

<?
/*
Name:	nameparse.php
Version: 0.2a
Date:	030507
First:	030407
License:	GNU General Public License v2
Bugs:	If one of the words in the middle name is Ben (or St., for that matter),
		or any other possible last-name prefix, the name MUST be entered in
		last-name-first format. If the last-name parsing routines get ahold
		of any prefix, they tie up the rest of the name up to the suffix. i.e.:
		
		William Ben Carey	would yield 'Ben Carey' as the last name, while,
		Carey, William Ben	would yield 'Carey' as last and 'Ben' as middle.

		This is a problem inherent in the prefix-parsing routines algorithm,
		and probably will not be fixed. It's not my fault that there's some
		odd overlap between various languages. Just don't name your kids
		'Something Ben Something', and you should be alright.

*/

function	norm_str($string) {
	return	trim(strtolower(
		str_replace('.','',$string)));
	}

function	in_array_norm($needle,$haystack) {
	return	in_array(norm_str($needle),$haystack);
	}

function	parse_name($fullname) {
	$titles			=	array('dr','miss','mr','mrs','ms','judge');
	$prefices		=	array('ben','bin','da','dal','de','del','der','de','e',
							'la','le','san','st','ste','van','vel','von');
	$suffices		=	array('esq','esquire','jr','sr','2','ii','iii','iv');

	$pieces			=	explode(',',preg_replace('/\s+/',' ',trim($fullname)));
	$n_pieces		=	count($pieces);

	switch($n_pieces) {
		case	1:	// array(title first middles last suffix)
			$subp	=	explode(' ',trim($pieces[0]));
			$n_subp	=	count($subp);
			for($i = 0; $i < $n_subp; $i++) {
				$curr				=	trim($subp[$i]);
				$next				=	trim($subp[$i+1]);

				if($i == 0 && in_array_norm($curr,$titles)) {
					$out['title']	=	$curr;
					continue;
					}

				if(!$out['first']) {
					$out['first']	=	$curr;
					continue;
					}

				if($i == $n_subp-2 && $next && in_array_norm($next,$suffices)) {
					if($out['last']) {
						$out['last']	.=	" $curr";
						}
					else {
						$out['last']	=	$curr;
						}
					$out['suffix']		=	$next;
					break;
					}

				if($i == $n_subp-1) {
					if($out['last']) {
						$out['last']	.=	" $curr";
						}
					else {
						$out['last']	=	$curr;
						}
					continue;
					}

				if(in_array_norm($curr,$prefices)) {
					if($out['last']) {
						$out['last']	.=	" $curr";
						}
					else {
						$out['last']	=	$curr;
						}
					continue;
					}

				if($next == 'y' || $next == 'Y') {
					if($out['last']) {
						$out['last']	.=	" $curr";
						}
					else {
						$out['last']	=	$curr;
						}
					continue;
					}

				if($out['last']) {
					$out['last']	.=	" $curr";
					continue;
					}

				if($out['middle']) {
					$out['middle']		.=	" $curr";
					}
				else {
					$out['middle']		=	$curr;
					}
				}
			break;
		case	2:
				switch(in_array_norm($pieces[1],$suffices)) {
					case	TRUE: // array(title first middles last,suffix)
						$subp	=	explode(' ',trim($pieces[0]));
						$n_subp	=	count($subp);
						for($i = 0; $i < $n_subp; $i++) {
							$curr				=	trim($subp[$i]);
							$next				=	trim($subp[$i+1]);

							if($i == 0 && in_array_norm($curr,$titles)) {
								$out['title']	=	$curr;
								continue;
								}

							if(!$out['first']) {
								$out['first']	=	$curr;
								continue;
								}

							if($i == $n_subp-1) {
								if($out['last']) {
									$out['last']	.=	" $curr";
									}
								else {
									$out['last']	=	$curr;
									}
								continue;
								}

							if(in_array_norm($curr,$prefices)) {
								if($out['last']) {
									$out['last']	.=	" $curr";
									}
								else {
									$out['last']	=	$curr;
									}
								continue;
								}

							if($next == 'y' || $next == 'Y') {
								if($out['last']) {
									$out['last']	.=	" $curr";
									}
								else {
									$out['last']	=	$curr;
									}
								continue;
								}
	
							if($out['last']) {
								$out['last']	.=	" $curr";
								continue;
								}

							if($out['middle']) {
								$out['middle']		.=	" $curr";
								}
							else {
								$out['middle']		=	$curr;
								}
							}						
						$out['suffix']	=	trim($pieces[1]);
						break;
					case	FALSE: // array(last,title first middles suffix)
						$subp	=	explode(' ',trim($pieces[1]));
						$n_subp	=	count($subp);
						for($i = 0; $i < $n_subp; $i++) {
							$curr				=	trim($subp[$i]);
							$next				=	trim($subp[$i+1]);

							if($i == 0 && in_array_norm($curr,$titles)) {
								$out['title']	=	$curr;
								continue;
								}

							if(!$out['first']) {
								$out['first']	=	$curr;
								continue;
								}

						if($i == $n_subp-2 && $next &&
							in_array_norm($next,$suffices)) {
							if($out['middle']) {
								$out['middle']	.=	" $curr";
								}
							else {
								$out['middle']	=	$curr;
								}
							$out['suffix']		=	$next;
							break;
							}

						if($i == $n_subp-1 && in_array_norm($curr,$suffices)) {
							$out['suffix']		=	$curr;
							continue;
							}

						if($out['middle']) {
							$out['middle']		.=	" $curr";
							}
						else {
							$out['middle']		=	$curr;
							}
						}
						$out['last']	=	$pieces[0];
						break;
					}
			unset($pieces);
			break;
		case	3:	// array(last,title first middles,suffix)
			$subp	=	explode(' ',trim($pieces[1]));
			$n_subp	=	count($subp);
			for($i = 0; $i < $n_subp; $i++) {
				$curr				=	trim($subp[$i]);
				$next				=	trim($subp[$i+1]);
				if($i == 0 && in_array_norm($curr,$titles)) {
					$out['title']	=	$curr;
					continue;
					}

				if(!$out['first']) {
					$out['first']	=	$curr;
					continue;
					}

				if($out['middle']) {
					$out['middle']		.=	" $curr";
					}
				else {
					$out['middle']		=	$curr;
					}
				}

			$out['last']				=	trim($pieces[0]);
			$out['suffix']				=	trim($pieces[2]);
			break;
		default:	// unparseable
			unset($pieces);
			break;
		}

	return $out;
	}


?>