I'm trying that validating the text box inside echo in php. I tried some methods but it is not working.
php form code:
echo '<form method="post" action="singlepage.php?id='.$idn.'"';
echo '<label id="blogtextarea2">Comment:</label><textarea rows="10" cols="75" name="comment" id="blogtextarea" ></textarea><br>';
echo '<input type="submit" name="post" id="blogsubmit" value="post">';
echo '</form>';
and validation code is
if(isset($_POST['post']))
{
if ($_POST['comment'] != "") {
$_POST['comment'] = filter_var($_POST['comment'], FILTER_SANITIZE_STRING);
if ($_POST['comment'] == "") {
$errors .= 'Please enter a valid name.<br/><br/>';
}
} else {
$errors= 'Please enter your name.<br/>';
}
}