未定义的索引：在表单提交的文本字段中保存用户输入的数据

Question

When error_reporting(E_ALL); is turned on I'm having the following example of notice

Notice:  Undefined index: name in /home/user/public_html/directory/subdirectory/test.php on line 111
Notice:  Undefined index: identity in /home/user/public_html/directory/subdirectory/test.php on line 116

in every form field if I want to save user inputted data in text fields using session after the form is submitted by the users.

Example of my current code is as following:

GetSQLValueString($_POST['name'], "text"),
GetSQLValueString($_POST['identity'], "text")

  <?php  $_SESSION['form'] = $_POST; ?>

  <form action="<?php echo $editFormAction; ?>" method="post" name="userform" id="userform">
  <input name="name" type="text" id="name" value="<?= $_SESSION['form']['name']; ?>" size="25" />
  <input name="identity" type="text" id="identity" value="<?= $_SESSION['form']['identity']; ?>" size="25" />

and so on.............

Any idea?

Answer 1

$_SESSION['form']['name']; and $_SESSION['form']['identity']; are undefined

set them to fix the warning:

$_SESSION['form']['name'] = '';
$_SESSION['form']['identity'] = '';