<?php

include_once __DIR__ . '/func.inc.phps';

function p3($z, $is_start=false, $is_end=false) {
	global $nlookup, $pchar_start, $pchar_end, $pchar_mid, $c_num;

	$z = strtoupper($z);

	if (!isset($pchar_mid)) $pchar_mid = unserialize(file_get_contents(__DIR__ . '/ser/count/ae_huge.ser'));
	if (!isset($pchar_start)) $pchar_start = unserialize(file_get_contents(__DIR__ . '/ser/count_start/ae_huge.ser'));
	if (!isset($pchar_end)) $pchar_end = unserialize(file_get_contents(__DIR__ . '/ser/count_end/ae_huge.ser'));

	if (!isset($nlookup)) {
		$nlookup = unserialize(file_get_contents(__DIR__ . '/ser/neighbors3/ae_huge.ser'));
		# Um das letzte Zeichen interpretieren zu können nutzen wir die Char-Häufigkeit
# Scoredifferenz wird zu schlecht
#		foreach ($pchar_mid as $c => $v) {
#			$nlookup["$c "] = $v;
#			if ($v > $nlookup["max"]) $nlookup["max"] = $v; 
#		}
	}

	$summanden = 0;

#	$z = strtoupper($z);
	$z .= " ";

        $p = 0; // Punkte
        for ($i=0; $i<strlen($z)-2; $i++) {
                $neighbors = substr($z, $i, 3);
                $p += isset($nlookup[$neighbors]) ? $nlookup[$neighbors] : 0;
        }
        $p /= $nlookup['max'];
	$summanden += strlen($z)-2;

	// Buchstabenhäufigkeit
/*
	for ($i=0; $i<strlen($z); $i++) {
		$mid_p = $pchar_mid[$z[$i]] / $pchar_mid['max'];
		$p += $mid_p;
	}
	$summanden += strlen($z);
*/

	// Analyse Ende/Start
	if ($is_end) {
		$end_p = $pchar_end[$z[strlen($z)-2]] / $pchar_end['max'];
	        $p += $end_p;
		$summanden++;
	}
	if ($is_start) {
		$anfang_p = $pchar_start[$z[0]] / $pchar_start['max'];
		$p += $anfang_p;
		$summanden++;
	}

	# $p /= $summanden / strlen($z) * alpha_count($z);
	$p /= $summanden;

	return $p;
}