learning, task4/6

4 -> not working
5,6 -> not done yet

lernen/ka-1-lbt3+4/aufgabe3.php

@@ -0,0 +1,67 @@
+<?php
+ini_set("display_errors", "on");
+
+echo "<h1>AUFGABE 3</h1>";
+
+// file names
+$error = "error.log";
+$access = "access.log";
+$debug = "debug.log";
+
+// read function
+function read($file){
+    $fileName = $file.".log";
+    $fp = fopen($fileName, 'r') or die ("Cannot open file"); // open file
+    $fileLineCount = count(file($fileName)); // count lines
+    // if file is empty
+    if ($fileLineCount == 0) {
+        echo "Datei '".$file.".log' ist leer <br>";
+    } else {
+        //echo "TIMESTAMP | LOG-LEVEL | NACHRICHT<br>";
+        foreach(file($fileName) as $line){
+            echo "$line<br>";
+        }
+    }
+    fclose($fp);
+}
+
+function writeLog($level, $message){
+    $fileName = $level.".log";
+    $fp = fopen($fileName, 'a') or die ("Cannot open file");
+    // get current time
+    $now = date(DATE_RFC2822, time()); 
+
+    $fileLineCount = count(file($fileName)); // count lines
+    // if file is empty
+    if ($fileLineCount == 0) {
+        fwrite($fp, "TIMESTAMP | LOG-LEVEL | NACHRICHT\n");
+    }
+    $data = "$now | $level | $message\n";
+    fwrite($fp, $data);
+    echo "Wurde geloggt <br>";
+    fclose($fp);
+}
+
+echo "<h2>READ LOGS BEFORE WRITE</h2>";
+
+echo "<h3>Error Log</h3>";
+read("error");
+echo "<h3>Access Log</h3>";
+read("access");
+echo "<h3>Debug Log</h3>";
+read("debug");
+// ------------------------------------------
+echo "<h2>WRITE LOGS</h2>";
+
+writeLog("error", "Es gab kein Fehler");
+writeLog("access", "Es wurde nicht auf die Datei zugegriffen");
+writeLog("debug","Das ka.php wurde gedebugt");
+// ------------------------------------------
+echo "<h2>READ LOGS AFTER WRITE</h2>";
+
+echo "<h3>Error Log</h3>";
+read("error");
+echo "<h3>Access Log</h3>";
+read("access");
+echo "<h3>Debug Log</h3>";
+read("debug");