In php: This is a static website. There are missing parts that students must fill in...

In php:

This is a static website.
There are missing parts that students must fill in in order to have a working website.
Students should follow the comments in the php file to complete this part.

After completed, the website should hide all messages before the user click submit button OR show either the error message or success message if the user click submit button.

//code

<?php

if(isset($_GET['submit'])){

//sanitize the input

/* Check the error from the input:
if input from user is empty
-> get an error string variable
if input is not empty
-> use preg_match() to match the pattern
$pattern = "/^[1-9][0-9]{2}(\.|\-)[0-9]{3}(\.|\-)[0-9]{4}$/";
-> if it's a matched, get a success string variable
*/

   }
?>
<!doctype html>
<html lang="en">
<head>

<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z" crossorigin="anonymous">
<link rel="stylesheet" href="">
<title>Lab 2-Part1</title>
</head>
<body>

<form action="" class="main-form needs-validation">
<div class="form-group">
<label for="numbers">Phone Number</label>
<input type="text" id="numbers" class="form-control" value=<?php //use PHP to print out the value the use typed in if any ?>>
<small class="form-text text-muted">xxx.xxx.xxx or xxx-xxx-xxxx</small>

      <div class="alert alert-danger">
          Must enter a valid phone number! 
          </div>
          <div class="alert alert-success">
          Phone number is valid! 
          </div>
</div>

<button type="submit" class="btn btn-primary" >Submit</button>
</form>

<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js" integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV" crossorigin="anonymous"></script>
</body>
</html>

Expert Solution

Here is the updated code and made some modification and formatted validations for phone.

<?php
   if(isset($_POST['submit'])){
   $ok = true;
   $phoneerror = $_POST["phoneno"];
   if (empty($phoneerror)) {
    $ok = false;  
    $phoneerrors = "<div class='alert alert-danger'>Phone number cannot be empty!</div>";
   }
   
   if ($phoneerror) {
   
    if(preg_match("/^[1-9][0-9]{2}(\.|\-)[0-9]{3}(\.|\-)[0-9]{4}$/", $phoneerror)) {
        $ok = false;  
      $phoneerrors = "<div class='alert alert-success'>Phone number is valid!</div>";
   }else{
    $ok = false;  
      $phoneerrors = "<div class='alert alert-danger'>Must enter a valid phone number!</div>";
   }
    
   }
   }
   
   ?>
<!doctype html>
<html lang="en">
   <head>
      <!-- Required meta tags -->
      <meta charset="utf-8">
      <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
      <!-- Bootstrap CSS -->
      <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z" crossorigin="anonymous">
      <link rel="stylesheet" href="">
      <title>Lab 2-Part1</title>
   </head>
   <body>
      <form method="post" action="" class="main-form needs-validation">
         <div class="form-group">
            <label for="numbers">Phone Number</label>
            <input type="text" id="phone" class="form-control" name="phoneno">
         </div>
         <input type="submit" class="btn btn-primary" name="submit" value="Submit">
      </form>
      <!-- Error Messages echo-->
      <?php echo $phoneerrors; ?>
      <!-- Optional JavaScript -->
      <!-- jQuery first, then Popper.js, then Bootstrap JS -->
      <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
      <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
      <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js" integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV" crossorigin="anonymous"></script>
      <!-- Phone validation limit and format xxx-xxx-xxxx start -->
      <script>
         function mob_formatting(ele,restore) {
           var numcheck,
               selection_start = ele.selectionStart,
               selection_end = ele.selectionEnd,
               number = ele.value.replace(/\D/g,'');
           
           // automatically add dashes
           if (number.length > 2) {
             // matches: 123 || 123-4 || 123-45
             numcheck = number.substring(0,3) + '-';
             if (number.length === 4 || number.length === 5) {
               // matches: 123-4 || 123-45
               numcheck += number.substr(3);
             }
             else if (number.length > 5) {
               // matches: 123-456 || 123-456-7 || 123-456-789
               numcheck += number.substring(3,6) + '-';
             }
             if (number.length > 6) {
               // matches: 123-456-7 || 123-456-789 || 123-456-7890
               numcheck += number.substring(6);
             }
           }
           else {
             numcheck = number;
           }
           ele.value =  (numcheck.length > 12) ? numcheck.substring(12,0) : numcheck;
           
           if (numcheck.slice(-1) === '-' && restore === false
               && (numcheck.length === 8 && selection_end === 7)
                   || (numcheck.length === 4 && selection_end === 3)) {
               selection_start = numcheck.length;
               selection_end = numcheck.length;
           }
           else if (restore === 'revert') {
             selection_start--;
             selection_end--;
           }
           ele.setSelectionRange(selection_start, selection_end);
         
         }
           
         function phone_number_check(field,e) {
           var key_code = e.keyCode,
               key_string = String.fromCharCode(key_code),
               press_delete = false,
               dash_key = 189,
               delete_key = [8,46],
               direction_key = [33,34,35,36,37,38,39,40],
               selection_end = field.selectionEnd;
           
           // delete key was pressed
           if (delete_key.indexOf(key_code) > -1) {
             press_delete = true;
           }
           
           // only force formatting is a number or delete key was pressed
           if (key_string.match(/^\d+$/) || press_delete) {
             mob_formatting(field,press_delete);
           }
           // do nothing for direction keys, keep their default actions
           else if(direction_key.indexOf(key_code) > -1) {
             // do nothing
           }
           else if(dash_key === key_code) {
             if (selection_end === field.value.length) {
               field.value = field.value.slice(0,-1)
             }
             else {
               field.value = field.value.substring(0,(selection_end - 1)) + field.value.substr(selection_end)
               field.selectionEnd = selection_end - 1;
             }
           }
           // all other non numerical key presses, remove their value
           else {
             e.preventDefault();
         //    field.value = field.value.replace(/[^0-9\-]/g,'')
             mob_formatting(field,'revert');
           }
         
         }
         
         document.getElementById('phone').onkeyup = function(e) {
           phone_number_check(this,e);
         }    
      </script>
      <!-- Phone validation limit and format xxx-xxx-xxxx end -->
      <style>
         body{
         padding:20px;
         }
         form.main-form.needs-validation {
         padding-bottom: 20px;
         }
      </style>
   </body>
</html>

Output:

venereology answered 4 months ago

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