php - "Undefined index" notice after submitting HTML form -

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so have sign form, , there php @ top of code. gives me error:

notice: undefined index: register in /home/content/04/7195304/html/index.php on line 20

this line 20:

if ($_post['register']) {

here submit button:

<input type="submit" class="gobutton" value="register" name="register"/>

edit

so here's form tags:

<form action="index.php" method="post">

you should check this:

if ( isset($_post['register']) ) {}

to avoid getting notice.


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