Add exams from exam58 to exam98

exam73/Cookie.php

@@ -0,0 +1,7 @@
+<?php 
+
+setcookie('username', 'nikola', time() + 1500);
+//ovako brisemo
+//setcookie('username', 'nikola', time()-1500);
+
+?>

exam73/Sessions.php

@@ -0,0 +1,14 @@
+<?php 
+
+session_start();
+
+if( isset($_SESSION['username']) && isset($_SESSION['age'])){
+    echo ' Welcome , ' , $_SESSION['username'] . '. You are ' . $_SESSION['age'] . 'years old.';
+} else{
+    echo 'Please log in.';
+}
+
+
+
+
+?>

exam73/set.php

@@ -0,0 +1,6 @@
+<?php
+session_start();
+$_SESSION['username'] = 'alex';
+$_SESSION['age'] = '21';
+
+?>

exam73/unset.php

@@ -0,0 +1,8 @@
+<?php
+
+session_start();
+
+unset($_SESSION['username']);
+
+session_destroy();
+?>

exam73/view.php

@@ -0,0 +1,5 @@
+<?php
+
+echo $_COOKIE['username'];
+
+?>