php - How to solve undefine index? -
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how solve undefined index although have started session in top of header file shows undefined index?
the following error shown:- notice: undefined index: signed_in in c:\xampp\htdocs\web_forum\header.php on line 26
line 26
if($_session['signed_in']) header.php
<?php session_start(); ?> <!doctype html> <html> <head> <meta charset="utf-8"/> <meta name="description" content="a short description."/> <meta name="keywords" content="put, keywords, here"/> <title>webinar</title> <link rel="stylesheet" type="text/css" href="css/style.css"> </head> <body> <h1>webinar</h1> <div id="wrapper"> <div id="menu"> <a class="item" href="index.php">home</a> - <a class="item" href="create_topic.php">create topic</a> - <a class="item" href="create_cat.php">create category</a> <div id="userbar"> <?php if($_session['signed_in']) { echo 'hello <b>' . htmlentities($_session['user_name']) . '</b>. not you? <a class="item" href="signout.php">sign out</a>'; } else { echo '<a class="item" href="signin.php">sign in</a> or <a class="item" href="signup.php">create account</a>'; } ?> </div> </div> <div id="content"> footer.php
</div><!--content--> </div><!--wrapper--> <div id="footer">created webinar swastik shrestha.</div> </body> </html>
you should use isset() method this:
if(isset($_session['signed_in'])) { ... } hope helps!
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