introduced statistics, landing page and more eyecandy

includes/file.php

@@ -0,0 +1,99 @@
+<?php
+
+function add_visit($id, $file){
+	$visits = get_visits($id, $file);
+	if($visits != null){
+		$date = date('Ymd');
+		
+		if(!isset($visits[$date][$id])){
+			$visits[$date][$id] = 1;
+		} else {
+			$visits[$date][$id] = $visits[$date][$id] + 1;
+		}
+		set_visits($visits, $file);
+	} else {
+		echo '<!-- ERROR konnte Besuche nicht zählen -->';
+	}
+}
+
+function get_visits($id, $file){
+	if(!file_exists($file)){
+		$visits[date('Ymd')][$id] = 0;
+		return $visits;
+	}
+	if(is_readable($file)){
+	
+		$handle = fopen($file, 'r');
+		$contents = fread($handle, filesize($file));
+		fclose($handle);
+		
+		$visits = unserialize($contents);
+		return $visits;
+	} else {
+		echo "<!-- ERROR $file kann nicht gelesen werden! -->";
+		return null;
+	}
+}
+
+function set_visits($visits, $file){
+	if(is_writable($file) or (is_writable(dirname($file)) and !file_exists($file))){
+	
+		$handle = fopen($file, 'w');
+		if (!fwrite($handle, serialize($visits))) {
+			echo "<!-- ERROR Kann in die Datei $file nicht schreiben -->";
+		}
+		fclose($handle);
+		
+	} else {
+		echo "<!-- ERROR $file nicht beschreibbar! -->";
+	}
+}
+
+function get_salt($hashfile){
+	// a) file does not exist yet
+	if(!file_exists($hashfile)){
+		if(is_writable(dirname($hashfile))){
+	
+		$hash[0] = date('Ymd');
+		$hash[1] = mt_rand();
+			
+		$handle = fopen($hashfile, 'w');
+		if (!fwrite($handle, serialize($hash))) {
+			echo "<!-- ERROR Kann in die Datei $hashfile nicht schreiben -->";
+		}
+		fclose($handle);
+		
+		} else {
+			echo "<!-- ERROR Kann Datei $hashfile nicht erstellen! -->";
+		}
+	}
+	
+	if(is_readable($hashfile)){
+	
+		$handle = fopen($hashfile, 'r');
+		$contents = fread($handle, filesize($hashfile));
+		fclose($handle);
+		
+		$hash = unserialize($contents);
+		
+		// b) hash is not of today
+		if($hash[0] != date('Ymd')){
+			$hash[0] = date('Ymd');
+			$hash[1] = mt_rand();
+			
+			$handle = fopen($hashfile, 'w');
+			if (!fwrite($handle, serialize($hash))) {
+				echo "<!-- ERROR Kann in die Datei $hashfile nicht schreiben -->";
+			}
+			fclose($handle);
+		}
+		return $hash[1];
+	} else {
+		echo "<!-- ERROR $file kann nicht gelesen werden! -->";
+		return 1;
+	}
+	
+}
+    
+
+?>

includes/funcs.php

@@ -210,7 +210,7 @@ function code_to_answer($code){
       if($i == $curr){
             return '<li class="active"><a href="#">'.$i."</a></li>\n";
       } else {
-            return '<li class=""><a href="index.php?id='.$i.'">'.$i."</a></li>\n";
+            return '<li class=""><a href="mahlowat.php?id='.$i.'">'.$i."</a></li>\n";
       }
     }