Modal doesn't validate with PHP - php

Question

Modal will not trigger my PHP validation.
I can't get my modal to use my PHP validation. HTML validation works. It connects to the DB and makes the updates, but skips the server-side validation. I would appreciate any help, this is new to me why a modal won't validate.
My PHP and Modal form is in one file. I know I need more error messages added to my form, but leaving the phone number and first name out triggers no error messages, so I will add more once I fix this issue. The code just executes and changes the DB.
<?php
//ini_set( 'display_errors', 1 );
//error_reporting( E_ALL );
session_start();
// Include db config
require_once 'includes/dbh.inc.php';
// Process form when post submit
// if($_SERVER['REQUEST_METHOD'] === 'POST'){
// Sanitize POST
$_POST = filter_input_array(INPUT_POST, FILTER_SANITIZE_STRING);
$error=array();
// $error = false;
// $error = isset($_SESSION['error']);
// $error = $_SESSION['error'];
function test_input($data)
{
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
$first = test_input($_POST['first']);
$last = test_input($_POST['last']);
$email = test_input($_POST['email']);
$unit = $_SESSION['unit'];
$bed = test_input($_POST['bed']);
$bath = test_input($_POST['bath']);
$web = test_input($_POST['web']);
$phone = test_input($_POST['phone']);
$manage = test_input($_POST['manage']);
$ck = $_POST['rent'];
$id = $_SESSION['id'];
// Validate name
if(empty($first) || empty($last)){
$error['name'] = "Enter name";
}
// Validate email
if(empty($email)){
$error['email'] = "Please enter email";
}
// check if e-mail address is well-formed
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
$error['email'] = "Invalid email format";
}
// Validate name
if(empty($bed) || empty($bath)){
$error['rooms'] = 'Please enter bed/bath #';
}
if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&##\/%?=~_|!:,.;]*[-a-z0-9+&##\/%=~_|]/i",$web)) {
$error['web'] = "Invalid URL";
}
// Validate name
if(empty($phone)){
$error['phone'] = 'Please enter your phone';
}
//Check phone # format 000-000-0000
if(!preg_match("/^([1]-)?[0-9]{3}-[0-9]{3}-[0-9]{4}$/i", $phone)) {
$error['phone'] = 'Please enter correct phone format';
}
//Check manage format
if (!preg_match("/^(\s\(([^)]+)\))?[[:punct:]]?\p{Lu}+(?:[\s'-]?[\p{L}\d]+)+(\(([^)]+)\))*$/", $manage)) {
$error['manage'] = 'Please enter correct management format';
}
if (empty($error)) {
var_dump($error);
print_r($error);
$sql = 'UPDATE condos_hp SET user_firstname=:first, user_lastname=:last, user_email=:email, user_bed=:bed, user_bath=:bath, user_web=:web, user_phone=:phone, user_manage=:manage, rent=:rent WHERE id=:id';
// Prepare statement
$stmt = $pdo->prepare($sql);
// Bind params
$stmt->bindParam(':first', $first, PDO::PARAM_STR);
$stmt->bindParam(':last', $last, PDO::PARAM_STR);
$stmt->bindParam(':email', $email, PDO::PARAM_STR);
// $stmt->bindParam(':unit', $unit);
$stmt->bindParam(':bed', $bed, PDO::PARAM_INT);
$stmt->bindParam(':bath', $bath, PDO::PARAM_INT);
$stmt->bindParam(':web', $web, PDO::PARAM_STR);
$stmt->bindParam(':phone', $phone, PDO::PARAM_STR);
$stmt->bindParam(':manage', $manage, PDO::PARAM_STR);
$stmt->bindParam(':rent', $ck, PDO::PARAM_INT);
$stmt->bindParam(':id', $id, PDO::PARAM_INT);
$stmt->execute(array(':first'=>$first, ':last'=>$last, ':email'=>$email, ':bed'=>$bed, ':bath'=>$bath, ':web'=>$web, ':phone'=>$phone, ':manage'=>$manage, ':rent'=>$ck, ':id'=>$id));
// if($stmt){
// header('Location: index1.php');
//}
if (isset($_POST['update'])) {
// session_start();
//Then delete all SESSION variables
session_unset();
//And destroy the current session that is running
session_destroy();
// exit(header("Location: http://www.harbour-place.com/login0.php?update=success"));
if (headers_sent()) {
die("Redirect failed. Please click on this link: <a href=http://www.harbour-place.com/login0.php>");
}
else{
exit(header("Location: http://www.harbour-place.com/login0.php?update=success"));
}
}
}
include_once 'includes/mailer2.php';
?>
<!-- Button trigger modal -->
<div class="row justify-content-center">
<button type="button" class="btn btn-primary btn-sm" data-toggle="modal" data-target="#exampleModalCenter">
UPDATE
</button>
</div>
</div>
<!-- Modal -->
<div class="modal fade" id="exampleModalCenter" tabindex="-1" role="dialog" aria-labelledby="userupdateform" aria-hidden="true">
<div class="modal-dialog modal-dialog-centered" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalCenterTitle">UPDATE RENTAL UNIT # <?php echo htmlentities($_SESSION['unit']) ?> </h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
<form action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>" method="post">
<div class="form-row justify-content-center">
<div class="form-group col-md-4">
<label >First Name</label>
<input type="text" class="form-control form-control-sm <?php echo (!empty($error['name'])) ? 'is-invalid' : ''; ?>" name="first" value="<?php echo htmlentities($_SESSION['first']) ?>">
<span class="invalid-feedback"><?php echo $error['name']; ?></span>
</div>
<div class="form-group col-md-4">
<label >Last Name</label>
<input type="text" class="form-control form-control-sm" name="last" value=<?php echo htmlentities($_SESSION['last']) ?> required>
</div>
</div>
<div class="form-row justify-content-center">
<div class="form-group col-md-8">
<label >Email</label>
<input type="text" class="form-control form-control-sm" name="email" value=<?php echo htmlentities($_SESSION['email']) ?> required>
</div>
<!--<div class="form-group col-md-4">
<label >Unit</label>
<input type="text" class="form-control form-control-sm" name="unit" value=<php echo $_SESSION['u_unit'] ?> required>
</div>-->
</div>
<div class="form-row justify-content-center">
<div class="form-group col-md-2">
<label >Bed</label>
<input type="text" class="form-control form-control-sm" name="bed" value=<?php echo htmlentities($_SESSION['bed']) ?> required>
</div>
<div class="form-group col-md-2">
<label >Bath</label>
<input type="text" class="form-control form-control-sm" name="bath" value=<?php echo htmlentities($_SESSION['bath']) ?> required>
</div>
<div class="form-group col-md-4">
<label >Web Site - www.myunit.com</label>
<input type="text" class="form-control form-control-sm" name="web" value=<?php echo htmlentities($_SESSION['web']) ?> required>
</div>
</div>
<div class="form-row justify-content-center">
<div class="form-group col-md-3">
<label >Phone [phone]</label>
<input type="text" id="yourphone2" class="form-control form-control-sm <?php echo (!empty($error['phone'])) ? 'is-invalid' : ''; ?>" name="phone" value="<?php echo htmlentities($_SESSION['phone']) ?>">
<span class="invalid-feedback"><?php echo $error['phone']; ?></span>
</div>
<div class="form-group col-md-5">
<label >Managment Co (VRBO, Self,etc)</label>
<input type="text-capitalize" class="form-control form-control-sm" name="manage" value="<?php echo htmlentities( $_SESSION['manage']) ?>" required>
</div> </div>
<!--<div class="form-row justify-content-center">
<div class="form-group col-md-8">
<label >Managment Co - VRBO etc.</label>
<input type="text" class="form-control form-control-sm" name="manage" value="" required>
</div></div>-->
<div class="form-row justify-content-center">
<div class="custom-control custom-checkbox">
<input type="hidden" name="rent" value="0">
<input type="checkbox" value="1" name="rent" class="custom-control-input" id="customCheck1" checked="checked">
<label class="custom-control-label" for="customCheck1">Check to show on the rental site</label>
</div></div>
<p class="text-center mb-1"><small><i class="fas fa-lock"></i>Your Information is Safe With us!<br> You will need to re-login after clicking Update<br>This also updates the HP rental website listing. </small></p>
<button type="submit" class="btn btn-primary btn-sm" name="update">UPDATE HP UNIT</button>
</form>
</div>
</div>
</div>
</div>
</body>
</html>

Answer 1

There are a couple issues here
You are setting $error to a boolean value, trying to define an array key with a value on a boolean doesn't work, it will continue to just be a boolean [Edit] if the value of $error evaluates to false before assigning array key => values to it, it will convert to an array but if it evaluates to true it will result in Warning: Cannot use a scalar value as an array and continue to be a boolean
You are never checking $error to stop the script from executing and updating the database