Learn VBA & Macros in 1 Week!

PHP - Simple Form Validation Help Required

Full Excel VBA Course - Beginner to Expert

Simple Form Validation Help Required	View Content

Hi all, I have the below which is meant to check if the required fields in a form have been submitted, however when submit is clicked, even with no values in the boxes, the form submits as normal.
<?php
error_reporting(E_ALL);
ini_set('display_errors', '1');
include_once ('formvalidator.php');
?>
<link href="../Styles/form_dark.css" rel="stylesheet" type="text/css" />

<?php
$show_form=true;
if(isset($_POST['submit']))
{
    $validator = new FormValidator();
    $validator->addValidation("user_name","req","Please fill in Name");
$validator->addValidation("user_password","req","Please enter a password");
    $validator->addValidation("user_email","email",
"The input for Email should be a valid email value");
    $validator->addValidation("user_email","req","Please fill in Email");
    if($validator->ValidateForm())
    {
        echo "<h2>Validation Success!</h2>";
        $show_form=false;
    }
    else
    {
        echo "<B>Validation Errors:</B>";

        $error_hash = $validator->GetErrors();
        foreach($error_hash as $inpname => $inp_err)
        {
          echo "<p>$inpname : $inp_err</p>\n";
        }
    }
}

if(true == $show_form)
{
?>

<form class="dark" action="regdo.php" method="post" >
  <ol>
    <li>
      <fieldset>
        <legend>User Registration</legend>
        <ol>
          <li>
            <label for="user_name">Username</label>
            <input type="text" id="user_name" name="user_name" value="" />
          </li>
          <li>
            <label for="user_email">E-Mail Address</label>
            <input type="text" id="user_email" name="user_email" value="" />
          </li>
          <li>
            <label for="user_password">Password</label>
            <input type="password" id="user_password" name="user_password" value="" />
          </li>
        </ol>
      </fieldset>
    </li>
  </ol>
  <p style="text-align:right;">
    <input type="reset" value="CANCEL" />
    <input type="submit" value="OK" />
  </p>
</form>

<?php
}//true == $show_form
?>

Can anyone explain what the problem is?

Cheers

Full Excel VBA Course - Beginner to Expert

Simple Form Validation

Similar Tutorials

View Content

I'm trying to get validation messages to display on the same page as my login form without any PHP within my login page, is that possible?

Form Validation

Similar Tutorials

View Content

Hi all!

Im trying to modify a script so that when a user submits data on a form if there are any errors it flags all errors and not just the first one the script comes to and 'dies'.

Heres the form code

<?php
session_start();
?>

<html>
<head>
<title>Sample AJAX Web Form</title>
<script type="text/javascript" src="prototype.js"></script>
<script type="text/javascript">
function sendRequest() {
new Ajax.Request("ajaxvalidate.php",
{
method: 'post',
parameters: 'name='+$F('name')+'&phonenumber='+$F('phonenumber')+'&age='+$F('age')+'&captcha='+$F('captcha'),
onComplete: showResponse
});
}
function showResponse(req){
$('show').innerHTML= req.responseText;
}
</script>
<style type="text/css">
P.yellow {background-color: #ffff00;}
</style>
</head>
<body>
<h3>This is a sample PHP web form with AJAX validation</h3>
Please complete the form below and then press "Submit button".<br />
<br /><br />
<form action="/ajaxwebform/ajaxvalidate.php" method="post" onsubmit="return false;">
Enter your Full Name, First name and Last name ONLY (Example: John Doe)<br />
<input style="background-color: #FFFFC0" type="text" name="name" id="name" size="50">
<br /><br />
Enter your Phone number (numbers only, no dashes and spaces)<br />
<input style="background-color: #FFFFC0" type="text" name="phonenumber" id="phonenumber" size="35">
<br /><br />
Enter your Age (Numbers only)<br />
<input style="background-color: #FFFFC0" type="text" name="age" id="age" size="50">
<br /><br />
<img src="/ajaxwebform/captcha.php" />
<br />
Enter the Captcha as shown above:
<br /> <br />
<input style="background-color: #FFFFC0" type="text" name="captcha" id="captcha" size="10">
<br /> <br />
<input type="submit" value="Submit" onClick="sendRequest()">
</form>
<br />
This form will validate your data entry using AJAX. If you are correct with your data entry, the entire information entered will be shown in this page without reloading.
<br />
<br /><br />
<p class="yellow" id="show"></p>
</body>
</html>

Heres the php validating code

<?php
session_start();
?>

<?php
//start session to recover captcha answers
//connect to database
$username = "root";
$password = "";
$hostname = "localhost";
$database = "newdb";
$dbhandle = mysql_connect($hostname, $username, $password)
or die("Unable to connect to MySQL");
$selected = mysql_select_db($database,$dbhandle)
or die("Could not select $database");
//extract form inputs
$name =$_POST['name'];
$phonenumber =$_POST['phonenumber'];
$age =$_POST['age'];
$usercaptchaanswer =$_POST['captcha'];
$correctcaptcha = $_SESSION['answer'];
//sanitize early for any possible MySQL entry
$name = mysql_real_escape_string(stripslashes(trim($name)));
$phonenumber = mysql_real_escape_string(stripslashes(trim($phonenumber)));
$age = mysql_real_escape_string(stripslashes(trim($age)));
$usercaptchaanswer = mysql_real_escape_string(stripslashes(trim($usercaptchaanswer)));
$correctcaptcha = mysql_real_escape_string(stripslashes(trim($correctcaptcha)));
Validate captcha entry
if ($correctcaptcha != $usercaptchaanswer) {
echo 'ERROR: You have entered wrong captcha code';
die ();
}
//Step 2 of data validation: check for blank entries
if (empty($name)) {
//name field is blank
echo 'ERROR: The name field is empty.';
die ();
}
if (empty($phonenumber)) {
//phone field is blank
echo 'ERROR: The phone field is empty.';
die ();
}
if (empty($age)) {
//age field is blank
echo 'ERROR: The age field is empty.';
die ();
}
if (empty($usercaptchaanswer)) {
captcha field is blank
echo 'ERROR: The captcha field is empty.';
die ();
}
//Step 3 of data validation: Ensuring correct format
//Step 3.1 validate full name, presence of first name and last name
$mystring = $name;
$findme   = ' ';
$pos = strpos($mystring, $findme);
$actualposition =$pos + 1;
//count strings
$count =strlen($mystring);
//count the number of characters for the first name
$countfirstname = $actualposition - 1;
//count the number of characters for the last name
$countlastname = $count - $actualposition;
//detect if full name has middle name
$posmid= strpos($mystring,$findme,$actualposition) + 1;
$middleadjust = $posmid - $actualposition;
$purealpha = str_replace(" ", "x", $mystring);
if ($actualposition==1) {
echo 'ERROR: You either forgot your first name or your last name.';
die ();
}
if ($countfirstname <2) {
echo 'ERROR: You are using an invalid first name, it should contain more than one character.';
die ();
}
if ($countlastname <2) {
echo 'ERROR: You are using an invalid last name, it should contain more than one character.';
die ();
}
if ($middleadjust >= 2) {
echo 'ERROR: You should not be using a middle name, please use only first name and last name.';
die ();
}
if (!(ctype_alpha($purealpha))) {
echo 'ERROR: Full name can only consist of alphabetic characters.';
die ();
}
//Step 3.2 Validate phone number
if (!(ctype_digit($phonenumber))) {
echo 'ERROR: A phone number should consist of numerical digits only and no spaces between numbers';
die ();
}
//Step 3.3 Validate age
if (!(ctype_digit($age))) {
echo 'ERROR: Your age should consist of numerical digits only and no spaces between numbers';
die ();
}
//Step 4. If all data entry is correct, show results in another page, assigned all values to sessions
echo 'Thank you for the correct data entry, below are the information entered:';
echo '<br />';
echo 'Your full name is: '.$name;
echo '<br />';
echo 'Your phone number is: '.$phonenumber;
echo '<br />';
echo 'Your age is: '.$age;
echo '<br />';
echo '<a href="/ajaxwebform/ajaxwebformtest.php">Click here to enter another data.</a>';
$_SESSION = array ();
session_destroy ();
mysql_close($dbhandle);
?>