Problem:- Display Inline Message in Form With Re-display Form

Solution:- Here we made two file to make a form to submit and show error message in inline and again to display same form to correct the information your user want to submit.

Test.php

<style type="text/css">
 .error{
  color: red;
 }
</style>
<?php 
$flavors = array('', 'vanilla','Chocolate', 'Strawbery' );
$defaults = array('name'=> '', 'age'=>'', 'flavor'=> array());
foreach ($flavors as $flavor) {
 $defaults['flavor'][$flavor] = '';
}
if ($_SERVER['REQUEST_METHOD']=='GET') {
 # code...
 $errors = array();
 include __DIR__.'\show-form.php';
}else{
 $errors = validateForm();
 if (count($errors)) {
  if (isset($_POST['name'])) {
   $defaults['name'] = $_POST['name'];
  }
  if (isset($_POST['age'])) {
   $defaults['age']= "checked='checked'";
  }
  foreach ($flavors as $flavor) {
    if (isset($_POST['flavor']) && ($_POST['flavor']==$flavor)) {
     $defaults['flavor'][$flavor] = "selected='selected'";
    }
   }
   include __DIR__.'\show-form.php';
  }else{
   print "The form is submitted";
  
  }
 }
 function validateForm(){
  global $flavors;
  $errors = array();
  if (!(isset($_POST['name']) && (strlen($_POST['name'])>3))) {
   $errors['name'] = "Enter a name of at least 3 letter";
  }
  if (!isset($_POST['age'])) {
   # code...
   $_POST['age'] = 0;
   if (($_POST['age']!= '1')) {
   $errors['age'] = "Invalid age check box value";

  }
  }
  
  if (empty($_POST['flavor'])) {
   $errors['flavor'] = "Choose a valid Flavor";
  }
  return $errors;
 }


 ?>

show-form.php

<form method="post">
 <dl>
  <dt>Your Name</dt>
  <?php if (isset($errors['name'])) {?>
   <dd class="error"><?php echo htmlentities($errors['name']); ?></dd>
   
  <?php } ?>
  <dd><input type="text" name="name" value="<?= htmlentities($defaults['name']); ?>"></dd>

  <dt>Are You Over 18 Year old</dt>
  <?php if (isset($errors['age'])) {?>
   <dd class="error"><?php echo htmlentities($errors['age']); ?></dd>
   
  <?php } ?>
  <dd><input type="checkbox" name="age" value='1' >Yes</dd>

  <dt>Your Fav Ice Cream Fav</dt>
  <?php if (isset($errors['flavor'])) {?>
   <dd class="error"><?php echo htmlentities($errors['flavor']); ?></dd>
   
  <?php } ?>
  <dd><select name="flavor"></dd>
   <?php foreach ($flavors as $flavor) {?>
    <option <?= isset($defaults['flavor'][$flavor])? $defaults['flavor'][$flavor]: ""; ?>> <?= htmlentities($flavor); ?></option>
    
   <?php } ?>

  </select>
 </dl>
 <input type="submit" value="Send Info" name="">
</form>

Output

इसे भी पढ़े – PDF फाइल का साइज कम कैसे करें?