Session intro

sg.php

+<pre>
+<?php
+
+// To use session include this function
+session_start();
+
+print("_SESSION\n");
+print_r($_SESSION);
+
+
+// To Clear the values in session array but not delete.
+if (isset($_GET['clear'])) {
+    printf("Clearing....\n");
+    session_unset();
+}
+/*
+* We can assignment $_SESSION['A'];
+* In string we can use without single quotes.
+* print("a = $_SESSION[A]");
+
+*/
+if (isset($_SESSION['a'])) {
+    printf("Exsiting value a = $_SESSION[a]\n");
+} else {
+    $_SESSION['a'] = time();
+    printf("Assigning value to a = $_SESSION[a]\n");
+}?>
+</pre>
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