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<a href="/questions/4261133/notice-undefined-variable-notice-undefined-index-and-notice-undefined" dir="ltr">“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP</a>
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(28 answers)
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<div class="grid--cell mb0 mt8">Closed <span title="2015-12-16 13:42:05Z" class="relativetime">4 years ago</span>.</div>
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I'll get the error
Notice: Undefined index: page in C:\xampp\htdocs\ajaxx\load_page.php on line 3
This is my full code:
<?php
if(!$_POST['page']) die("0");
$page = $_POST['page'];
if(file_exists('pages/page_'.$page.'.html'))
echo file_get_contents('pages/page_'.$page.'.html');
else echo 'There is no such page!';
?>
It was working yesterday but all of a sudden it gives me this error. The full code is downloaded from A simple AJAX website with jQuery
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$_POST['page'] does not exits.
In my experience the $_POST value is always set so doing isset("..") ensures ['page'] is sent. I think 'page' is not been posted. It may be good to do a print_r($_POST) and see what is posted.
if( isset($_POST['Page']) )
{
$page = $_POST['page'];
if(file_exists('pages/page_'.$page.'.html'))
echo file_get_contents('pages/page_'.$page.'.html');
else echo 'There is no such page!';
}
else
echo "Value not posted";